Fill in the blanks with the words in the word bank on the right. Use each word only once.
1. Natural gas is called a
because it was made from marine plants and animals hundreds of
millions of years ago.
2. We can not make natural gas in a short time, so we say it is a
3. The energy in natural gas once came from the
4. Natural gas is underground; we drill
to find it.
5. Decaying garbage makes a gas called
6. We add a smell like
to natural gas so we know if there is a leak.
use natural gas for heat.
use natural gas to make products.
9. Power plants
natural gas to make electricity.