Across

Down

4. to crash into -> collide

1. a layer of molten rock beneath Earth's crust ->mantle

6. the length of time that something lasts

-> duration

2. a border or an edgeà boundary

7. a tool that records movements in Earth's crust -> seismograph

3. large sections of Earth's crust ->plates

8. a break in Earth's crust where blocks of rock are moving in different directions

->fault

5. to act on one another-> activate