Across
- 2. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
- 5. a sudden shaking of Earth's surface
- 7. moving apart in different directions
- 9. any of Earth's main continuous areas of land, such as Africa, Asia, and North America
- 11. the place where two plates meet
- 12. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
- 13. something we observe to be similar over and over again
Down
- 1. one of the very large sections of hard, solid rock that make up Earth's outer layer
- 3. the outside or top layer of something
- 4. a diagram that shows what the inside of something looks like
- 6. a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
- 8. Earth's outermost layer of hard, solid rock that is underneath the soil, vegetation, and water
- 9. moving toward the same place
- 10. an extinct reptile that lived about 300 million years ago