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EnergyChapter5
Chapter 5 Review
| Question | Answer |
|---|---|
| What is energy? | the ability to do work |
| What is kinetic energy? | the energy that an object has due to motion |
| What does kinetic energy depend on? | the speed (velocity) and mass of an object |
| What is potential energy? | energy that is stored and held in readiness |
| What is gravitational potential energy? | potential energy that depends on the height of an object....for example, a person riding a swing |
| What is elastic potential energy? | energy of a stretched or compressed object....for example, a rubber band |
| What is mechanical energy? | kinetic or potential energy associated with motion or the position of an object |
| What is thermal energy? | the total energy of particles in an object......thermal=heat |
| What is chemical energy? | potential energy stored in chemical bonds |
| What is electrical energy? | energy of moving electric charges |
| What is electromagnetic energy? | energy of light and other forms of radiation |
| What is nuclear energy? | energy stored in the nucleus of an atom (mostly from the sun) |
| What is energy conversion? | a change from one form of energy to another |
| Lighting a match is an example of what type of energy conversion? | mechanical energy to thermal energy or electromagnetic energy |
| Eating a sandwich is an example of what type of energy conversion? | mechanical energy to chemical energy |
| What does the Law of Conservation of Energy state? | Energy can never be created or destroyed. |
| Energy can only ___________ from one form to another. | change |
| What are fossil fuels? | a material that was formed hundreds of millions of years ago and stores chemical potential energy |
| What are some examples of fossil fuels? | coal, petroleum and natural gas |
| Fossil fuels contain energy that comes from_____________ | the sun |
| Fossil fuels release _______________ gases when burned. | carbon dioxide |
| A lot of _____________ is lost to the atmosphere when fossil fuels are burned. | oxygen |
| The sun converts nuclear energy to _______________ energy. | electromagnetic |
| Ancient plants and animals convert electromagnetic energy from the sun to stored ____________ energy. | chemical |
| remains of plans and animals become __________ over millions of years. | coal |
| Stored chemical energy in coal is converted to _____________ energy when the coal is burned to make steam. | thermal |
| Thermal energy is converted to _____________ energy as turbines are turned by steam. | mechanical |
| Mechanical energy is converted to __________ energy as turbines turn the electric generators. | electrical |
| Electrical energy is converted to ___________ energy in your toaster. | thermal |
| What are renewable resources? | Resources that can be replaced in the future. |
| What are non-renewable resources? | Resources that CANNOT be replaced in the future. |
| What are some examples of non-renewable resources? | oil, natural gas, coal, petroleum |
| What are some examples of renewable resources? | geothermal, solar, hydroelectric, wind |
| At which point does a pendulum have the most kinetic energy? | at the bottom of its swing |
| At which point does a pendulum have the most potential energy? | at the top on its swing |
| Friction converts mechanical energy to... | thermal energy |
| Describe hydroelectric power. | water is continually recycled from earth to the atmosphere, and back again. Affects the environment by taking up a lot of land and disturbing the natural flow of water. |
| Describe solar power. | It is clean, abundant (lots of it) and unlimited Solar panels are used to collect sunlight and change it into electrical power. |
| Describe geothermal energy as a resource. | Heat energy that can be collected from hot springs inside the earth. It is transformed into electrical energy. |
Created by:
Mrs.Verano
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