Climate Change - Global Warming
Across
- 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.
Down
- 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 ____.