1
2
3
4
5
6
7
8
Across
- 1. How often something happens in a given time
- 4. The remains of a plant or animal from long ago preserved in rock
- 7. Two or more substances mixed together but not chemically joined
- 8. The rate at which something speeds up
Down
- 2. The tiny building block that makes up all living things
- 3. A hard solid piece of the Earth made of minerals
- 5. The tendency of an object to stay still or keep moving
- 6. Facts and information collected from experiments