Unit 1 Vocab- Layers of Earth and Seismic Waves

Front

Lithosphere

Back

This solid section includes the crust and the top layer of the mantle.

Front

Density

Back

The amount of mass in a certain space or volume.

Front

Triangulation

Back

A method used to locate the epicenter of an earthquake. This requires at least three locations!

Front

Inner Core

Back

The most dense layer of the Earth. This layer is made of solid iron and nickel and considered to be the center of the Earth.

Front

Outer Core

Back

This layer is between the mantle and the inner core. This layer is made of liquid iron and nickel.

Front

Seismometer

Back

An instrument that measures and records details of earthquakes, such as force and duration.

Front

Seismic Wave

Back

Energy that is created by an earthquake and travels as a wave through the Earth’s layers.

Front

Reflection

Back

The bouncing back of a wave. This occurs when the wave cannot pass through a certain material.

Front

Crust

Back

The outermost and thinnest layer of the Earth.

Front

Surface Wave

Back

Slow waves that travel through the crust. These waves are the most damaging to the Earth’s surface.