Fossils and Energy RWW pg. 136 (1-9)

1. The remnants or traces of organisms from long ago that are preserved in soil or rock are _____________.

• fossils

• energy

• fuel

2. Many fossils formed when organisms died and were covered with layers of ____________.

• fuel

• fossils

• sediments

3. Over millions of years, sediment covered and compressed dead plants to form soft or ______________ coal.

• charcoal

• bituminous

• fossils

4. Sometimes increased heat and pressure turned soft coal into harder _______________ coal.

• anthracite

• bituminous

• fossils

5. Heat and pressure on buried ocean plants and animals helped to form _____________ and ______________ .

• oil ; natural gas

• fossils ; fuels

• bituminous ; anthracite

6. Coal, oil, and natural gas are ___________________________.

• natural gas

• fossil fuels

• hard charcoal

7. Scientists can tell how old a fossil is by testing the age of the __________________ around it.

• soil

• rock

• fossils

8. The comparison that tells whether one fossil is older than another fossil is ____________________.

• stone age

• relative age

• ols stone age

9. The law of superposition says that each layer of rock is _____________________ than the layer below it.

• older

• younger

• middle ages