Across
- 3. This type of rock is formed by high temperature and pressure.
- 8. This type of rock is formed by sediment being compressed and hardened.
- 9. These are remains of plants and animals from the past.
Down
- 1. The __ is the most outer layer of the earth.
- 2. The newest layers are found near the ___.
- 4. This type of rock is formed by hot magma hardening.
- 5. Earth is made up of many of these
- 6. The oldest fossils are found in the __ rock layer.
- 7. The oldest layers are found on the __.