* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Energy Study Guide Key
Potential energy wikipedia , lookup
Public schemes for energy efficient refurbishment wikipedia , lookup
Energy subsidies wikipedia , lookup
Low-Income Home Energy Assistance Program wikipedia , lookup
Open energy system models wikipedia , lookup
Energy Charter Treaty wikipedia , lookup
Energy storage wikipedia , lookup
Zero-energy building wikipedia , lookup
Regenerative brake wikipedia , lookup
100% renewable energy wikipedia , lookup
International Energy Agency wikipedia , lookup
World energy consumption wikipedia , lookup
Energy efficiency in transport wikipedia , lookup
Energy returned on energy invested wikipedia , lookup
Internal energy wikipedia , lookup
Low-carbon economy wikipedia , lookup
Micro combined heat and power wikipedia , lookup
Energy policy of the United Kingdom wikipedia , lookup
Alternative energy wikipedia , lookup
Energy policy of Australia wikipedia , lookup
Energy harvesting wikipedia , lookup
Conservation of energy wikipedia , lookup
Energy policy of the European Union wikipedia , lookup
Energy policy of Finland wikipedia , lookup
Negawatt power wikipedia , lookup
Distributed generation wikipedia , lookup
Environmental impact of electricity generation wikipedia , lookup
Life-cycle greenhouse-gas emissions of energy sources wikipedia , lookup
Energy Independence and Security Act of 2007 wikipedia , lookup
Name: _________________________________________________ Date: _____________ Bell #: ____________ Unit 1 Energy Study Guide Directions: Answer the following questions using your notes, class work assignments, quizzes, and book. 1. How is the potential energy increased? Increase the object’s height and/or increase the object’s mass 2. Explain the transfer of energy. Give 3 examples. When one form of energy changes into another form of energy; gasoline in a lawn mower – chemical to mechanical; coal-power plants – chemical to electrical; light bulb – electrical to heat and light; toaster – electrical to heat; power drill – electrical to mechanical; a lite candle – chemical to light 3. What is potential energy? Energy that is stored or at rest 4. What is kinetic energy? Energy that is in motion 5. List and briefly explain the non-renewable energy sources. a. Coal: formed from the remains of plants and animals (decaying vegetation) under pressure and heat; used by power plants to generate electricity; can damage ecosystems b. Oil: made from plants and animals that lived millions of years ago; makes gasoline c. Natural gas: formed from the remains of plants and animals that were under pressure and heat d. Fossil Fuels: formed from the remains of organisms 6. List and briefly explain the renewable energy sources. a. Wind: uneven heating of the earth’s surface by the sun; used to make electricity and thought to be always available b. Hydroelectric power (water): created on rivers; uses renewable natural resources; generates electrical energy c. Solar: energy from the sun; used to heat homes; does not convert mechanical energy to electrical energy d. Geothermal: heat that comes from inside the earth by magma e. Biomass: energy that comes from wood, trees, crops, animal manure, and human sewage 7. List and describe the forms of potential energy. a. Chemical: energy stored in chemical bonds; found in batteries b. Nuclear: energy stored in the nucleus of an atom; sun, stars, nuclear bomb c. Elastic potential: energy that can be stretched or compressed; bow and arrow, rubber band d. Gravitational potential: energy that depends on the height of an object 8. List and describe the forms of kinetic energy. a. Electromagnetic: energy that travels in waves; main source is from the sun; light, CT scan; X-ray b. Electrical: moving electric charges that produce electricity; electric car, phone charger, lightning c. Mechanical: energy associated with motion and position of an object; clock, fan, school bus d. Thermal/heat: total energy of particles in a substance; melting ice cream, hot stove 9. What is a renewable resource? An energy source that is always available to produce energy; humans won’t run out 10. What is a non-renewable resource? An energy source that exists in limited quantities or amounts 11. Describe the three ways heat is transferred. a. Radiation: energy transfers in rays or waves; the sun’s rays, from a hot stove b. Conduction: energy transfer when molecules touch one another; a hot spoon in hot soup c. Convection: energy transfer by the flow of a material or fluid; convection currents heat the atmosphere or in the oceans