Across
- 3. The Earth's inner core is mainly made up of _________ and nickle.
- 7. This type of plate movement occurs when plates move away from one another.
- 9. The speed and ___________ of waves change depending on the material the wave is moving through.
- 11. This layer of the Earth is made up of cool and rigid rock. It contains the upper mantle and the crust.
- 12. This layer of the Earth only makes up about 1% of the Earth's total mass.
- 13. This type of seismic wave can travel through solids and liquids.
- 14. This section of the Earth is also known as the lower mantle.
- 15. Name of the waves scientists use to study the inside of the Earth.
Down
- 1. This type of plate movement can build mountains.
- 2. The lithosphere is broken up into pieces called ____________.
- 4. This type of plate movement is responsible for most Earthquakes.
- 5. This type of wave causes the most damage and moves the slowest.
- 6. Most activity on the Earth occurs at or near plate _____________.
- 8. Density ___________ as you move towards the center of the Earth.
- 10. This type of seismic wave arrives second.