Lesson 2 Our planet Earth
Across
- 4. A point at which,everywhere on Earth,days and nights are nearly equal in length
- 8. tectonics a process involving huge blocks of Earth's crust
- 9. A point at which days are longest in one hemisphere and shortest in the other
- 10. to support
Down
- 1. part of a whole
- 2. the process of depositing,or dropping,eroded material
- 3. is a process that breaks rocks down into tiny pieces
- 5. seams of Earth's crust
- 6. molten rock
- 7. a process in which water,ice,or wind remove small pieces of rock and move them somewhere else