Across
- 3. These form at divergent boundaries between oceanic crust.
- 6. These form at either convergent or divergent boundaries where magma breaches the surface.
- 7. These occur most often at transform boundaries, violently shaking the surface of the earth.
- 9. These form in deep in the ocean at convergent boundaries.
- 11. Alfred Wegener first came up with his idea for continental drift when he noticed that Africa and South America fit together like __________ pieces.
- 12. New _________ is formed at divergent boundaries when magma cools to become rock.
- 14. Which layer of the earth is broken into many plates.
- 15. One piece of evidence for plate tectonics is the distribution of different species ___________ across continents.
- 16. These ranges form on continental crust at convergent boundaries.
- 17. The plates move do to _____________ currents in the mantle.
Down
- 1. The type of boundary where two plates are moving away from each other.
- 2. The type of boundary where two plates are moving towards each other.
- 3. The plates are constantly __________, about the speed that your fingernails grow.
- 4. The crust is broken into several large regions called __________.
- 5. In this layer, directly beneath the crust, the material moves do to convection.
- 8. The theory that the crust is broken into plates that are constantly moving.
- 10. When one plate slides under another plate it is called a ___________ zone.
- 13. The type of boundary where two plates slide past one another horizontally.