Science

3. layer of the Earth between the crust and the core.
5. ,A depression in the seafloor, produced by subduction
8. record made by a seismograph.
9. brittle, outermost layer of the Earth encompassing both oceanic and continental types.
10. study of the Earth's structure and composition.
11. solid layer of the Earth.
12. caused by the movement of tectonic plates.
13. Earth's inner core is primarily composed of iron and nickel.
14. study of earthquakes and the propagation of seismic waves.

1. of molten rock formed at depth, including dissolved gases and crystals.
2. a slab of rock thrusts into the mantle.
4. an extrusive igneous rock, commonly found in oceanic crust, formed from rapidly cooled lava.
6. Earth's surface directly above the focus of an earthquake.
7. soft, weak upper portion of the mantle.