Name: ____________________________________________ Date: _____________ Class: ____________
7th Grade - Review Guide: Ch. 5 ENERGY RESOURCES
1. Name the three major fossil fuels:
A. coal
B. oil
C. natural gas
2. Why are fossil fuels considered nonrenewable resources?
Fossil fuels are considered nonrenewable because they take hundreds of millions of years to form.
3. Wind energy is an indirect form of _solar__ energy.
4. What is used in a nuclear power plant to change water into steam?
Heat that is released from nuclear fission reactions change water into steam.
5. The percentage of energy that is actually used to perform work is known as efficiency.
6. What do fossil fuels contain that make them energy-rich? _hydrocarbons___
7. Decaying plant remains form a solid fossil fuel called coal.
8. How much time does it take for Earth to receive enough solar energy to satisfy the energy needs of the
world for one year?
One hour
9. In the reactor vessel of a nuclear power plant, this takes place: ______nuclear fission
10. Give one example of an energy-efficient device: _compact fluorescent light bulb
11. What is the most plentiful fossil fuel in the United States? coal
12. Which fossil fuel produces the lowest levels of most air pollutants? natural gas
13. What is a refinery?
A refinery is a factory where crude oil is separated into fuels and other products.
14. What is the result of using fossil fuels more rapidly than they are formed?
The fossil fuels will eventually be used up.
15. Give an example of a biomass fuel: wood
16. What is geothermal energy?
The intense heat from Earth’s interior that warms the magma beneath Earth’s surface is geothermal
energy.
17. Material that helps block the transfer of heat between the air inside and outside a building is known as
insulation.
18. Why is there more interest in renewable energy sources?
Fossil fues resources are decreasing driving the interest in renewable energy sources to take their
place.
19. What is in the control rods of a nuclear power plant that slows down a nuclear fission reaction by
absorbing neutrons?
Cadmium
20. What is less efficient: incandescent light bulbs OR compact fluorescent bulbs? Incandescent light bulbs
21. What is most likely to cause more air pollution between oil, coal, or natural gas? Natural gas
22. What is the fossil fuel that is most present in the largest amount in the United States? coal
23. Compounds that are made from the fossil fuel, oil, are known as petrochemicals.
24. The Earth’s interior has intense heat which helps provide __geothermal__ energy.
25. If the fuel rods in a reactor vessel produce too much heat at a nuclear power plant, what condition can
occur?
meltdown
26. Name three things that can be used as biomass fuels:
A. Wood
B. Leaves
C. manure
27. Name one way you can practice energy conservation:
Riding a bike instead of a car ride can practice energy conservation.
28. What does a refinery do?
Crude oil is heated and separated into fuels and other products.
29. Name two indirect forms of solar energy:
A. Wind
B. Hydroelectric power
30. What can be increased to get more energy out of fuels?
Efficiency, the percentage of energy that is actually used to perform work, can be increased.