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6.4 Unit Test Review
6.4 Energy Unit Test Review
| Question | Answer |
|---|---|
| Name the energy transformation when someone eats and then runs a race. | Chemical energy changes to mechanical energy |
| Name the energy transformation when a gas-powered car drives down the road. | Chemical energy changes to mechanical energy |
| In a coal burning electrical power plant, when is there mechanical energy transforming to electrical energy? | When the steam turns the turbine which then turns the generator causing electrons to flow which is electricity. |
| In a coal burning electrical power plant, when is there radiant energy transforming to chemical energy? | When the sun's energy allowed plants and animals to thrive millions of years ago eventually forming coal. |
| In a coal burning electrical power plant, when is there chemical energy transforming to thermal energy? | When coal is used for fuel as the heat source. |
| Food is what type of energy? | Chemical |
| A bike being ridden is what type of energy? | Mechanical |
| A generator is producing what type of energy? | Electrical |
| A fan turning is what type of energy? | Mechanical |
| Solar panels use what type of energy converting it to what type of energy? | Radiant energy to electrical energy |
| Radiation we cannot see but we can feel as heat is what type of radiation? | Infrared radiation |
| Radiation you can see from the sun is what type of radiation? | Visible light radiation |
| Radiation that can harm skin cells/life is what type of energy? | Ultraviolet radiation |
| Energy from the sun is made up of what three types of energy? | Visible light, infrared, and ultraviolet |
| A wind turbine, solar panels, photosynthesis, hydroelectric power, radiant heat ...all use what as their energy source? | The sun is their source of energy |
| How is wind formed? | The sun heats Earth's surface unevenly causing the movement of air. |
| _________________ uses the interior of Earth as it's energy source. | Geothermal energy |
| Earth's energy budget refers to... | How much solar energy is entering and exiting Earth's atmosphere AND whether the amount of solar energy entering balances with the amount exiting. |
| How much of the sun's solar radiation is reflected into space? | About 30% |
| What do greenhouse gases do? | Greenhouse gases hold heat energy allowing for a comfortable temperature on Earth. If we add more greenhouse gases to the atmosphere, the Earth's energy budget would become unbalanced. |
| Greenhouse gases at increased levels cause what to melt? | Polar ice caps and glaciers |
| When air or water has a rising and falling effect due to warming and cooling, this transfer of heat energy is called? | Convection |
| The energy coming from the sun which travels in waves and does not need matter to travel, heats the surface of Earth. What type of energy is this? | Radiation |
| Air molecules warm from touching earth's surface transferring heat to other air molecules. This is an example of what type of heat transfer? | Conduction |
| True or false: Cold water molecules sink because they are more dense and have less energy. | True |
Created by:
Johnsopd
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