Climate Change - Global Warming

2. Oil is liquid ____ left over from plant and animal materials that decayed millions of years ago.
6. A car that uses both a gasoline engine and an electric motor is called a ____.
8. One way to prevent tropical forests from being destroyed is to make them ____ land, like our national parks.
9. The main gas that traps heat, making Earth warmer, is ____.
12. Carbon dioxide is made of carbon and ____.
13. Most energy used for electricity comes from burning ____.
15. Spinning ____ inside wind turbines create electricity.
16. Old buildings ____ a lot of electricity by letting heated air escape in the winter and cooled air escape in the summer.

1. Solar cells capture light from the ____ and turn it into electricity.
2. Spiral-shaped light bulbs, commonly known as ________, use 75 percent less electricity than incandescent (filament) light bulbs.
3. Unlike hybrid cars, electric cars run only on ____.
4. Cutting down trees in ____ can release a lot of carbon dioxide into the atmosphere.
5. _________ is made from wood chips, grass, and other plant materials; it can be used in cars and is cleaner than petrol.
7. Wind _______ create clean electricity to power homes and businesses.
10. Burning ____ in cars produces carbon dioxide.
11. Heat-trapping carbon dioxide can make the earth become warmer and lead to climate ______.
14. Petrol comes from ____.
16. When carbon dioxide and other gases trap heat, they cause the earth to get ____.