Across
- 3. rock formed by extreme heat and pressure
- 7. layers of rock
- 8. the color of a minerals powder
- 9. type of soil with largest grain size
- 10. a planet makes one trip around its orbital path
- 11. alive, or once was
- 12. a vibration inside the earth that shakes the surface of the earth
- 14. the slow, natural process that causes all of the rocks on earth to change over time
- 17. largest layer of earth
- 18. type of soil with smallest grain size
- 19. solid metal and densest layer of Earth
- 22. how light reflects off of a mineral
- 24. these are mainly caused on Earth by the moon's gravity
- 26. the breaking down of rocks
- 27. larger, less dense, gas giants (4 of them)
Down
- 1. a mixture of all types of soil, best for growing plants
- 2. when you can see less than half of the moon
- 4. the most powerful force of weathering on Earth
- 5. rock formed by compacted sediment, commonly found on Earth's surface
- 6. not alive, never was
- 8. longest and shortest days of the year, June 21 and Dec 21
- 13. equal amounts of daytime and night time, March 21 and Sept 21
- 15. the outer layer of the Earth
- 16. boundary where two tectonic plates pull apart
- 20. can be solar or lunar, when a shadow is cast in space
- 21. boundary where two tectonic plates collide
- 23. a planet makes one spin around its axis
- 25. rock formed by cooling magma/lava
- 26. when the moon appears to be growing