Earth Interior

BY:Payge Fuller

Geologist Learn About Earth Interior

Geologist have used two main types of evidence to learn about the Earth's interior: direct evidence from rock samples and indirect evidence from seismic waves.

A few Vocabulary words.

  • Seismic waves- vibrations that travel through Earth carrying the energy to release an earthquake.
  • Pressure- THe force pushing on a surface divided by the area of that pressure.
  • Basalt- A dark dense, igneous rock with a fine texture, found in oceanic crust.
  • Granite- A usually light-colored igneous rock that is found in continental crust.
  • Lithosphere- A rigid layer made up of the uppermost part of the mantle and the crust.
  • Asthenosphere- The soft layer of the mantle on which the lithosphere floats.
  • Outer Core- A layer of molten iron and nickel that surrounds the inner core of the Earth
  • inner core- A dense sphere of solid iron and nickel at the center of the Earth