Earth's Layers and Seismic Waves

What is the layer called that combines the crust and upper part of the mantle?

• asthenosphere

• mesosphere

• lithosphere

• tectonic plates

Which layer of the Earth is the THICKEST?

• crust

• mantle

• outer core

• inner core

Which layer of the Earth is the THINNEST?

• crust

• mantle

• outer core

• inner core

Which layer is shown in red?

• crust

• mantle

• outer core

• inner core

The waves of energy that travel through the earth's layers are

• scenic waves

• tidal waves

• cosmic waves

• seismic waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which type of seismic wave can move through solid layers of the earth but not through the liquid outer core?

• P wave

• S wave

• Q Wave

• Surface Wave

Tags

NGSS.MS-PS4-2

S waves get 'stuck' and cannot go through this earth layer

• Outer core

• Mantle

• Inner Core

• Crust

Tags

NGSS.MS-PS4-2

How do scientists learn about layers we can't visit or see?

• bowls of water

• seismic waves

• dig through Earth

Students observe a partial graph of seismic data produced from an earthquake. The graph shows data for two different layers of the Earth.

The students create a table to identify which layers are shown in the graph. Which table BEST represents the data in the graph?

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Tags

NGSS.MS-ESS2-3

What happens to P-waves and S-waves from a crustal earthquake when the waves reach Earth's outer core?

• S-waves are transmitted through the outer core, but P-waves are not transmitted.

• P-waves are transmitted through the outer core, but S-waves are not transmitted.

• Both P-waves and S-waves are transmitted through the outer core.

• Neither P-waves nor S-waves are transmitted through the outer core.