Electrical Power And Energy Worksheet Answers

Exercise 1: Electric Energy Consumption 1. g sandwich across a table 0. Give an example of potential energy? A book on a shelf. Wave Power. Proposed Question What is fuel cell energy? Proposed Answer Fuel cells are fuel conversion devices that can produce electricity. 5 V battery, what amount of current is supplying the clock? 14. Nuclear Power Plant worksheet and the answers are here. Information can also be found when you click on “Energy Sources” on the left hand side of the page. How are work and energy related? Energy is required to accomplish a change in a system which is work. Energy Diagrams Worksheet. 22,000 Lumens of light: For all bulbs: Cost of electricity per kilowatt-hour: This will depend on how your region produces electricity. 25 m against a force of 23 N. Answer 2 1 volt is equal to 1 joule of energy imparted to 1 coulomb of charge (6. Energy Forms and Transfers. Pick one item to investigate and complete the following table using a data from the Kill a Watt device and a calculator: Item Name: A Energy Consumption Reading (kWh) from Kill a Watt device kWh. Electric Power and Energy In a circuit given below, electrons coming from the battery transfer some of their energy to the conductor cable. 15 Electrical Circuits Name Worksheet A: SERIES CIRCUIT PROBLEMS be careful to use proper significant figures on all answers 1. Logged in members can use the Super Teacher Worksheets filing cabinet to save their favorite worksheets. Control rods (yellow) are placed among the fuel rods (gray) to absorb excess electrons and slow. The electrical relationships between resistance (R), current (I), power (P) and voltage (E) is defined by Ohm's Law. Answer 5 P = IV Energy dissipated by an electrical resistance is usually manifest as heat, although sometimes it is also in the form of light. Pick one item to investigate and complete the following table using a data from the Kill a Watt device and a calculator: Item Name: A Energy Consumption Reading (kWh) from Kill a Watt device kWh. 2 Worksheets consisting of 20 questions and answers related to electrical energy calculations using various formulas to find electrical energy, electrical power, resistance, voltage and current. Physics 11 - Work, Power, Energy Worksheet. For instance, a battery converts chemical to electric energy, chemical explosion converts chemical energy in to kinetic and thermal energy and so on. Explain how work and energy are affected by power. 4 N force pushing a 400. Electric charge is a fundamental property of matter and is borne by elementary particles. Student answers will vary. If a meter reader cannot read your meter, a door card will be left for you in your mailbox or front door. Electrical Consumption Worksheet. 5 amps for 60 seconds… a 5 second pause intervenes, and the cycle is rep. Energy associated with motion. Electrical Energy Summary Sheet. This worksheet has 3 fill in the blank, 10 short answer,. If I leave my 1 kW heater on for one hour it will consume 1 kWh of energy. Cresskill Middle School John Massaro, Principal Melissa Cavins, Assistant Principal. Biomass digesters or waste to energy plants Cogeneration plants Fossil fuel power plants Fuel cells Geothermal power plants Nuclear power plants. ACCOMPANYING QUESTION AND ANSWER WORKSHEET As appropriate, please suggest recommended study, test or quiz questions / answers to accompany the case study proposed above. What is the mass of the astronaut on the moon?. From the point of view of many ordinary people, Eskom and the government have failed the people. Current Electricity from Series And Parallel Circuits Worksheet, source:mrsciguy. 1a) What does it mean when an energy resource is said to be “renewable”? Possible responses: Renewable resources regenerate or can be replaced in a relatively short time period (such as the length of a human life). Repair it or replace it. Release of energy from the Sun(b) Electrical A nuclear power plant. A 60-Watt light bulb would consume 30 Joules of electrical energy in 2 seconds. Calculate the work done by a 2. 22,000 Lumens of light: For all bulbs: Cost of electricity per kilowatt-hour: This will depend on how your region produces electricity. The flow of electricity is an electric current. 1 Activity Lesson 2. What kind of energy do all moving objects have? (2009 test – question 12) a. Energy consumption calculation. While hydroelectric and natural gas plants can quickly respond to changes in load, coal, biomass and nuclear plants. If the reading on your house’s electric meter in March was 3456 and in April was 4566, how much electrical energy was used in the 1-month period? How much would the electrical bill be for the people living in that house? If an air conditioner uses 2400 watts of power, and runs on a 220 circuit, how much current flows through the air conditioner?. The power of an electrical appliance is the rate at which it transforms energy. The Teacher Infobook provides fact sheets about energy, the major energy sources, electricity, energy consumption, and energy efficiency and conservation. or destroyed. All Teachers, Students and any guest who may feel so inclined, are welcome to utilize the Video Tutorials (Screen Casts), PowerPoints, Slides, Photos, Lecture Notes, worksheets, etc. 5 V ¯ 2 A = 3 VA = 3 W Use the equation: P = I x V P = electric power consumed by the circuit (Watts) I = amount of current in the circuit (Amps) V = battery voltage (Volts) 2. mathswithgraham. Wavelength (l) and Frequency (n) Relationships. Generating electricity in nuclear reactors is cheaper than electricity generating from oil, gas and coal, not to speak of the renewable energy sources! 2 Base Load Energy. Hydro-electric power stations can produce a great deal of power very cheaply. How much energy does it consume? 3. The unit of electric power is the _____. Biomass digesters or waste to energy plants Cogeneration plants Fossil fuel power plants Fuel cells Geothermal power plants Nuclear power plants. Define the terms work, mechanical energy, potential energy, kinetic energy, and power. Math Worksheets A series of free GCSE/IGCSE Physics Notes and Lessons. 110 Avon Street, Charlottesville, VA 22902, USA. The important information will help us to the answer the questions given below. In fact any type of energy can be converted into any other type of energy. Answer: A, B, C, F a. Wind PowerWind Power Fundamentals Presented by: Alex Kalmikov and Katherine Dykes With contributions from: Kathy Araujo PhD Candidates, MIT Mechanical Engineering, Engineering Systems and Ub Pl iUrban Planning MIT Wind Energy Group & Renewable Energy Projects in ActionRenewable Energy Projects in Action Email: [email protected] Worksheet on Discharge Tubes and Electric & Magnetic Fields; Answers to Worksheet on Discharge Tubes, Electric & Magnetic Fields; Worksheet on Dawn of Quantum Era; Einstein's Contribution To Quantum Theory; Worksheet on Solid State Physics; Worksheet on Superconductors; Useful Links. It requires the same amount of work to do these two jobs (see question #23) and the same amount of time. It is how solar energy is converted into electricity by using either photo-voltaic (direct method) or concentrated solar power (Indirect). A perfect, energy-efficient machine would change all the energy put in it into useful work—an impossible dream. In physics, work is-- and I'm going to use a lot of words and they actually end up being kind of circular in their definitions. Tell why and how people must use radiation or radioactive materials carefully. aplusphysics. Electrical Energy Summary Sheet. Which of the following statements are true about electric power and electric potential energy?. Light - Photons are a form of energy. No worksheet or portion thereof is to be hosted on, uploaded to, or stored on any other web site, blog, forum, file sharing, computer, file storage device, etc. The energy produced due to vibration of an object is called sound energy. They put the steps in the correct order and then source diagrams for each statement, creating an illustrated explanation of electricity generation and transmission, from power plant production to the eventual place of consumption. ) with full confidence. When you hear the word, "Work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning. IMPORTS (Electric utility) -- Power capacity or energy obtained by one utility from others under purchase or exchange agreement. Cresskill Middle School John Massaro, Principal Melissa Cavins, Assistant Principal. 15% of the world's electricity is generated by hydropower. Grade 5: Forms of Energy; Grade 5: Electrical Energy; Topics Energy. Power Discovery Zone:. __ Practice Problems, Online Students can visit my. com work energy spring problems, work energy cycle physics, work energy and power lab, works energy drink, work energy and power practice test,. Define electrical energy. Hopefully this image will probably be certainly one of good resource for Work Energy And Power Worksheet Answer Key Also Electrical Power Worksheet Answers Best Worksheet Parallel. The electric power consumed by a circuit with one light bulb is 3 W. The electrical charge goes through high-voltage transmission lines that stretch across the country. Potential and kinetic energy printables. The forms of Energy worksheet for kids is free to print and use as many times as you want. Section 3 (p. electricity grid. They both use petrol. These worksheets are self-explanatory. What is thermal energy (from the sun) to kinetic energy (of the wind) to kineitc energy (the baldes to spining) to electrical ( the turbine turns a generator and makes a flow of electons) to thermal ( heat from the toster) to radient ( when the toaster get hot enough it will emmit light). After the students have collected their energy-use data for one week, distribute Handout Two: My Electricity Diary Part 2. 1Electric energy in massive quantities is transmitted from this hydroelectric facility, the Srisailam power station located along the Krishna River in India, by the. What makes electric power possible—and indeed practical—is a superb electromagnetic device called an electricity generator: a kind of electric motor working in reverse that converts ordinary energy into electricity. The Energy Worksheet - Get our interesting and educational FREE to download science hidden words game about Energy. NET/EnglishClub. Energy, Work, Power and Efficiency Worksheet 1. The amount of energy used by an appliance depends on its power and the time the appliance works for. Energy Transfers Animation. "Types of energy" means "kinetic energy", "chemical energy" and so forth. However, there is very little energy wasted when using a fast-switching transistor to control electrical power, unlike when a variable resistance is used for the same task. 1 Student Worksheet Electricity comes to Saskatchewan Lesson Overview and Outcomes 2. 2 Current, charge and power. During the flow, the electrons gain kinetic energy which can be described as the electrical energy. potential c. The amount of work done depends on two things the amount of force exerted and the distance over which the force is applied. Geothermal power plants have lower emissions compared to other types of power plants. Hydropower C. What was the average cost of electricity per day during January? Note: Utilities are making increasing use of digital electric meters in place of analog meters. Calculate the work done by a 2. Magnetic Effect of Current Chapter 13 One mark for each correct answer. Answer: A, B, C, F a. Using Electricity and Magnetism ANSWER KEY Using Electricity and Magnetism Chapter Project Worksheet 1 1-6. Control rods (yellow) are placed among the fuel rods (gray) to absorb excess electrons and slow. 9 Practically every form of electric power is generated using this type of engine. Power is the rate at which energy is used by an electric circuit. Energy efficiency. Short Answer Name three different types of energy. Wind turbines convert the mechanical energy from the wind. If the current drawn by the bulb is 0. The conservation of energy is an absolute law, and yet it seems to fly in the face of things we observe every day. ? to home page of the Energy Kids. The current is sent through transformers to increase the voltage to push the power long distances. Units of Electricity and Cost. because it is a. Information can also be found when you click on “Energy Sources” on the left hand side of the page. Worked example: A charge of 1500 C transfers 750 J of electrical energy into heat and light in a lamp. Upgrading fossil fuel power plants to combined heat and power (CHP) plants. It is estimated that wind power in America will eliminate an estimated 62 million tons of carbon dioxide annually. Electric Power from Sun and Wind Complete all three exercises. potential c. Physics worksheet - Electric charge, current, potential, energy & power (e = 1. Current is measured using ammeters. Energy transfers Fill in the gaps with the words to describe energy transfers taking place in this exhibit. This is provided by batteries in the circuits you have been looking at. Wind power also does not cause pollution. Electric generators in power stations are the only sources of electricity. The net generation is measured at the output transformer of the power plant. Physics Worksheet Work and Energy Section: Name: Mr. 22,000 Lumens of light: For all bulbs: Cost of electricity per kilowatt-hour: This will depend on how your region produces electricity. Elicit domestic appliances from the students, such as dishwasher, washing machine, etc. This power station is used to produce electricity from coal, natural gas,. Students should state that the electrical. energy = power x time If you want the energy in joules the unit of power must be given in watts and the time in seconds: energy(J) = power(W) x time(s) If you want the energy in kilowatt-hours the unit of power must be given in kilowatts and the time in hours. Biomass digesters or waste to energy plants Cogeneration plants Fossil fuel power plants Fuel cells Geothermal power plants Nuclear power plants. Home Survey - Power in the Kitchen. S1 Topic 9: Energy and Generating Electricity 7 Worksheet 2 Energy Changes I. The unit of electrical energy is the kilowatt-hour,which equals 1000 watts of power used for one hour. A spring has a potential energy of 72. 4 Conveyor belt analogy of an electrical circuit coal mine = power source conveyor belt. The students have a worksheet with different activities to do. Energy Calculation Worksheet 2018. (a) What is heating effect of current? List two electrical appliances which work on this effect. Energy efficiency. This is the equivalent to taking 10. Electric power and energy 1. The wooden ball rolls along nicely, but the ping-pong ball stops in a few centimetres. In an electricity system without grid energy storage, generation from stored fuels (coal, biomass, natural gas, nuclear) must go up and down in reaction to the rise and fall of solar electricity (see load following power plant). Samar Hathout ; KDTH 101; 2 Work Work is the transfer of energy through motion. Joules iv) Voltage d. Energy Power Calculation. If a blender is plugged into a 110 V outlet that supplies 2. Renewable energy. Truly, we have been realized that 18 Electrical Power And Energy Worksheet is being one of the most popular subject in the matter of document example right now. What is energy? What are the 5 main sources of RENEWABLE energy?. You can save money and prevent energy waste by unplugging electronics and chargers when they are not in use. This version of the conservation-of-energy principle, expressed in its most general form, is the first law of thermodynamics. Movement of electrons. You must exert a force of 4. Physics A First Course Skill and Practice Worksheets Credits CPO Science Curriculum Development Team Author: Thomas Hsu, Ph. Conservation of Energy According to one of the major laws of physics, energy is neither created nor destroyed. Go back in time and meet a few of the people who made important discoveries in the history of electricity. Calculate the work done by a 2. 4 Conveyor belt analogy of an electrical circuit coal mine = power source conveyor belt. electrical energy is a result of energy transformations. Upgrading fossil fuel power plants to combined heat and power (CHP) plants. INTRODUCTION TO ENERGY Part 1 - The two types of energy Directions: Determine the best match between basic types of energy and the description provided. After the students have collected their energy-use data for one week, distribute Handout Two: My Electricity Diary Part 2. Electric charge is a fundamental property of matter and is borne by elementary particles. ANSWER KEY FOR WHERE DOES YOUR ENERGY COME FROM? WORKSHEET FOR LESSON 2. All Teachers, Students and any guest who may feel so inclined, are welcome to utilize the Video Tutorials (Screen Casts), PowerPoints, Slides, Photos, Lecture Notes, worksheets, etc. Complete the table below. 60 ×10 −19 C) Q1 Write down the SI units for electric charge, current, potential, energy and power. An energy broker is a person who helps educate and assist consumers, both homeowners and business owners, in choosing a low cost electric supplier in deregulated states. In reality we found that Work Power and Energy Worksheet Answer Key Conservation Of Energy Worksheet - Conservation Energy Worksheet was being one of the subjects about instances of business archives. Energy Efficiency Worksheet 1. Wright's Classroom Resources. These practice questions will help you study the. This category contains questions and answers related to energy conservation. How To Get Viagra Prescription. Thought-provoking questions afford students chances to reflect on what they've read. Answers to questions Worksheet 1. If you email ([email protected] An energy broker is a person who helps educate and assist consumers, both homeowners and business owners, in choosing a low cost electric supplier in deregulated states. We feel it deliver something new for Work Energy And Power Worksheet Answer Key Together With Crossword Puzzle Electricity Highest Clarity With Answers. Tell why and how people must use radiation or radioactive materials carefully. In the United States, coal is the number one fuel for generating electricity. Potential and kinetic energy printables. 7 A machine in a power plant that produces electricity by changing mechanical energy into electrical energy. ENERGY CRISIS AND ENERGY ALTERNATIVES With population growth comes increased usage of energy. 5 V ¯ 2 A = 3 VA = 3 W Use the equation: P = I x V P = electric power consumed by the circuit (Watts) I = amount of current in the circuit (Amps) V = battery voltage (Volts) 2. 1 Activity Lesson 2. Electric Circuit Worksheet No. While hydroelectric and natural gas plants can quickly respond to changes in load, coal, biomass and nuclear plants. The energy produced due to vibration of an object is called sound energy. Yet, this electrical energy began as another form of energy, such as chemical energy in coal, or mechanical energy, such as the falling water in a hydropowered dam. Just like water, which can only flow down a hill, an electric current can only flow if there's something to give it a 'push'. Power is the amount of energy used by an electrical appliance. Science Worksheets for 6th Grade. Different electric power plants may use all kinds of primary energy sources (such as coal, oil, uranium, wind, hydropower, solar power, biomass), but their final product is the electricity that can be conveniently sent, almost at the speed of light, to another location where it's needed. Physics A First Course Skill and Practice Worksheets Credits CPO Science Curriculum Development Team Author: Thomas Hsu, Ph. It can be available live through power lines or it can also be stored, for example, in batteries or capacitors. Units of Electricity and Cost. An equivalent electric vehicle is to be built such that it can generate the same power as its gasoline counter part. Calculate the electric current through the point. 0 V battery draws a current of 25 A. So in units form. 5 V ¯ 2 A = 3 VA = 3 W Use the equation: P = I x V P = electric power consumed by the circuit (Watts) I = amount of current in the circuit (Amps) V = battery voltage (Volts) 2. Electrical Energy and Power. Even harnessing some of the sun’s energy could power all our homes and may make our world a more habitable place to reside later on. Objectives Students will: • Apply electrical safety and conservation lessons to their daily lives. The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times number of usage hours per day t divided by 1000 watts per kilowatt:. Types of Energy Worksheet. 03 quadrillion Btus. Students explore electricity generated in nuclear power plants. Student answers will vary. Calculation of Electrical Energy Energy On-page 157 we dealt with power arid noted that power is the rate at which energy is transferred from one place to another or from one form to another The formula that links energy and power is: Energy = Power x Time. 10 Th is is made from ancient plant material and gives coal most of its energy. This GCSE Physics section of Revision World covers energy and power, looking at how electrical appliances at home transfer energy from the mains supply to heat and light our homes as well as to operate our appliances. Eddy Currents. It can give us a shock, a burn, or even kill us. fisikastudycenter. Print Calculating Energy & Power. Yet, this electrical energy began as another form of energy, such as chemical energy in coal, or mechanical energy, such as the falling water in a hydropowered dam. Energy Calculation Worksheet 2 You will use the information on this page and the results from counting the squares on the city grid to determine the energy, cost, and carbon footprint of the lights from this city. Watch the lecture video. power supply, conduction, insulation and protection 3. Watching television, playing video games, using the microwave, etc. Which answer best illustrates these energy transformation?. aplusphysics. Here students find information on the generation of electrical power and the infrastructure needed to transmit and distribute it. Go back in time and meet a few of the people who made important discoveries in the history of electricity. It requires the same amount of work to do these two jobs (see question #23) and the same amount of time. In lakes, ponds, and other water bodies, an electrical power source can generate current into the water. Energy Forms and Transfers. If the current drawn by the bulb is 0. ) with full confidence. Current Electricity Basics Worksheet 30 The garbage disposal in a sink can generate 3/4 horsepower. 2; Energy and Power Worksheet No. Electricity is produced in power stations and it travels a long way before arriving at our homes. Never assume that a wire is safe to touch even if it is down or appears to be insulated. It also describes how generators and transformers function. Saving, producing, and using energy wisely will be critical to America's future. "Energy Resources" is about ways of getting energy so we can generate electrical power. The protons and neutrons cluster together to form the nucleus, the central part of the atom, and the. If this second incline is also frictionless, how will the speeds of the two blocks compare when they each reach the bottom of their respective inclines?. Electrical Circuits Lab Viva Questions and Answers Question No. This worksheet accompanies Electricity Supply Summary, Electrical Wiring and Safety Summary and Electrical Power Summary. These practice questions will help you study the. Answers may be used more than once. Lesson on sources of energy. 1Electric energy in massive quantities is transmitted from this hydroelectric facility, the Srisailam power station located along the Krishna River in India, by the. A burning candle changes — chemical energy into mechanical energy G chemical energy into electromagnetic and heat energy H thermal energy into chemical energy J chemical energy into electrical energy 7. What is the resistance of a 150 W light bulb running on a 120 V circuit?. The diagram shows that the generating sources have 40. Solar Power – covers the basics of capturing the enduring energy of the Sun and converting it into other forms, especially electrical energy. Read the following description of the execution of Kenneth Stewart in Virginia on 23 September 1998. This Physics quiz is called 'Electricity - Current, Charge and Power' and it has been written by teachers to help you if you are studying the subject at senior high school. Pick one item to investigate and complete the following table using a data from the Kill a Watt device and a calculator: Item Name: A Energy Consumption Reading (kWh) from Kill a Watt device kWh. In physics, work is-- and I'm going to use a lot of words and they actually end up being kind of circular in their definitions. Calculate the work done by a 47 N force pushing a pencil 0. ) activities, electricity, nuclear energy, nuclear energy unit, worksheets. Energy Worksheets: This section has worksheets that cover the properties of energy including the law of conservation of energy. Video clip: Hydro power - how it works When it was first built, the huge "Hoover Dam", on the Colorado river, supplied much of the electricity for the city of Las Vegas; however now Las Vegas has grown so much, the city gets most of its energy from other sources. Complete the table below. Ask students to name some items that run on electricity. Let's take a closer look at generators and find out how they work!. ExploreLearning ® is a Charlottesville, VA based company that develops online solutions to improve student learning in math and science. Energy is everywhere. First, students will read an informative passage on the importance of energy. Batteries are reserves of chemical energy that can be transformed into electrical energy. Upgrading fossil fuel power plants to combined heat and power (CHP) plants. Say: “One kind of energy causes you to go down a slide, or causes an apple to fall from a tree, or rocks to fall on the side of a mountain. You must have energy to accomplish work - it is like the "currency" for performing work. Work, Power, and Energy Webquest Worksheet Work What is work? _____ What is the equation to calculate work? _____ Imagine a person skydiving. You will receive your score and answers at the end. 5 amps for 30 seconds, then 240 volts at approximately 1. Uranium atoms are split to make heat. Electrical potential is measured in volts, which is the potential electrical energy per charge. Series And Parallel Circuits Science Worksheets Worksheets For Kids Heat Energy Spy Kids Electrical Safety Matter Science Electrical Appliances Food Safety Incorporate these electricity worksheets to learn about the power source, open, close, series and parallel circuits, conductors, insulators, charges and more!. A spring has a potential energy of 72. Energy WebQuest- Nonrenewable and Renewable Energy Name _____ Date _____ Period _____ Score _____ 1 Essential questions: How do people make use of resources to power their everyday energy needs? How does the use of these resources impact the environment?. The following are not electrical in nature: d. Objectives Students will: • Apply electrical safety and conservation lessons to their daily lives. You can save money and prevent energy waste by unplugging electronics and chargers when they are not in use. 12 One suggestion: Mass of the object – the greater the mass the greater the weight (gravity acting on the mass). Equation: P = _V x I ___ or _voltage x current _____. This GCSE Physics section of Revision World covers energy and power, looking at how electrical appliances at home transfer energy from the mains supply to heat and light our homes as well as to operate our appliances. ENERGY RESOURCES STUDENT WORKSHEETS Susana Amorós Ortega 4 IES TORRE VICENS Lleida The electricity journey: from power stations to our homes 4. Electrical energy. 5 V battery. If it is 20% efficient, then the bulb converts 20% of the electrical energy into light and 80% is wasted by being transformed into heat (ever felt a hot light bulb?). Hydropower C. Let's take a closer look at generators and find out how they work!. Nothing from this site may be stored on Google Drive or any other online file storage system. Ampere iii) Power c. 8million homes. Saving, producing, and using energy wisely will be critical to America's future. electrical energy is a result of energy transformations. Some of the worksheets below are Force and Motion Worksheets in PDF, Lessons on Force and Motion, Balanced and Unbalanced Forces and Velocity and Acceleration with colorful diagrams. 3 Electrical Power 15. Directions: Use the pre-selected data tables for February 2001 together with the Conversion Factors and the Fact Sheet. Basic Electrical & Electronics Interview Questions & Answers Electrical & Electronics Interview Questions/Answers Electrical & Electronics Notes & Articles Trending Up tp 93% Off - Launching Official Electrical Technology Store - Shop Now!. What is thermal energy (from the sun) to kinetic energy (of the wind) to kineitc energy (the baldes to spining) to electrical ( the turbine turns a generator and makes a flow of electons) to thermal ( heat from the toster) to radient ( when the toaster get hot enough it will emmit light). 00 x 104 W of power to drive at 5. When a force moves. electric current rubber series parallel resistor copper battery silver Chose the best word(s) from the word box to complete each sentence. Electrical Energy - Lightning. Power Factor — The ratio of the actual electrical power dissipated by an AC circuit to the product of the r. Electrical Energy and Power. This can work synergistic with renewable energy sources such as wind and solar. 2 Teacher Answer Key. Energy 1 Energy A lesson from the Native Access to Engineering Programme Worksheet 18 Energy: ‘en-fr-je (noun), 1599 (a) the capacity for doing work (b) usable power (as heat or electricity); also, the resources for producing such power. Calculate the work done by a 47 N force pushing a pencil 0. Quickly access your most used files AND your custom generated worksheets! Please login to your account or become a member and join our community today to utilize this helpful feature. Grade 5: Forms of Energy; Grade 5: Electrical Energy; Topics Energy. It powers cars and gives us light. 4 N force pushing a 400. If the bulbs are on for 3 hours, how much would the temperature in the garage increase because of the lights blbs (assuming no energy losses). Power stations and their energy stores Power stations use energy to generate electricity. ANSWER KEY Black Rock Forest Electrical Energy Consumption versus Solar Energy Incidence. Worksheet on Discharge Tubes and Electric & Magnetic Fields; Answers to Worksheet on Discharge Tubes, Electric & Magnetic Fields; Worksheet on Dawn of Quantum Era; Einstein's Contribution To Quantum Theory; Worksheet on Solid State Physics; Worksheet on Superconductors; Useful Links. Electric-powered mowers and other electric tools should not be used in the rain, on wet grass or in wet conditions. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: