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D - Science - Ch 9
Renewable Sources of Energy
| Question | Answer |
|---|---|
| How does a solar house capture energy? | it uses active solar collectors on the roof and large windows on south and west sides that act as passive solar collectors |
| What does the equipment on the roof and in the basement of a solar house do? | Active solar cells on the roof generate electricity that can be stored in the basement and the water that is heated is stored in a tank in the basement and used to heat the house |
| What is solar energy? | energy from the sun |
| What is the source of most other renewable energy resources? | solar energy |
| When will solar energy run out? | not for billions of years |
| When is solar energy available? | only when the sun is shining |
| How do some solar plants capture energy and use it to generate electricity? | rows of giant mirrors focus the sun's rays to heat a tank of water, then the water boils making steam that can be used to generate electricity |
| What can solar energy be converted into? | electricity in a solar cell |
| What are solar cells used to power? | calculators, lights and other small devices |
| What converts sunlight into electricity in a solar cell? | solar heating systems |
| How do active solar heating systems differ from passive solar heating systems? | they use fans and pumps to distribute the heat |
| What are other renewable sources of energy besides the sun? | water, wind, biomass fuels, geothermal energy & hydrogen |
| What is an indirect form of solar energy that electricity produces by flowing water? | hydroelectric power |
| Hydroelectric power is the most widely used source of what? | renewable energy in the world today |
| What are 2 limitations on hydroelectric power in the US? | most of the suitable rivers have already been dammed and can have negative effects on the environment |
| What is the fastest growing energy source? | wind energy |
| What are fuels made from living things? | biomass fuels |
| What is intense heat from Earth's interior called? | geothermal energy |
| Geothermal energy is an unlimited source of what? | cheap energy |
| What is the obstacle to using hydrogen as a fuel? | it take more energy to obtain pure hydrogen than is produced by burning the hydrogen |
Created by:
lprinke
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