Across
- 3. Created when tectonic plates try to slide past each other.
- 5. Pressure from gases in the mantle squeezes molten rock upwards until the surface of the Earth swells and explodes.
- 6. The scale that measures the size of an earthquake (starts at 0, with an increase of one unit representing a 10 times increase in the size of the Earthquake).
- 9. The type of plate boundary where the plates move away from each other are known as d_____________ boundaries.
- 10. The type of natural disaster caused by plates trying to slide past each other.
- 13. Large pieces of rock blown out of a volcano are known as _________ bombs.
- 14. _____________ currents cause the movement of tectonic plates.
- 15. A wave formed when the epicentre of an earthquake is under the ocean floor.
Down
- 1. Evidence for plate tectonics included the presence of __________ of the same plants and animals on continents where they used to join.
- 2. The name given to magma when it emerges from a volcano.
- 4. The type of plate boundary where the plates move towards each other are known as c______________ boundaries.
- 7. Smaller earthquakes that occur as slabs of rock try to settle into a stable position after an earthquake.
- 8. Hot liquid rock in the mantle __________ due to a lower density.
- 11. The point on the Earth’s surface that is directly above the focus of an earthquake.
- 12. Alfred Wegener developed the theory of plate _____________.