Earth's Layers and Seismic Waves

Front

What is the thinnest layer of the Earth?

Back

The crust is the thinnest layer of the Earth.

Front

What is a seismograph?

Back

A seismograph is a recording of earthquake waves.

Front

Which layer of the Earth is made up of solid nickel and iron?

Back

The inner core is made up of solid nickel and iron.

Front

What layer of the Earth is represented in yellow in diagrams?

Back

The mantle is often represented in yellow in diagrams.

Front

What type of seismic waves are the fastest?

Back

Primary waves are the fastest kind of seismic waves.

Front

What are the two main types of seismic waves?

Back

The two main types of seismic waves are body waves and surface waves.

Front

What is the outer core primarily made of?

Back

The outer core is primarily made of liquid iron and nickel.

Front

What is the mantle composed of?

Back

The mantle is composed of semi-solid rock that flows slowly.

Front

What are Love waves?

Back

Love waves are a type of surface seismic wave that moves the ground side to side.

Front

What are Primary waves?

Back

Primary waves, or P-waves, are compressional waves that travel through solids and liquids.