Layers of the Earth and Seismic Waves

Which layer of the earth is the least dense layer?

• crust

• mantle

• outer core

• inner core

The chemical layer 3 is called the..

• mesosphere

• lithosphere

• mantle

• outer core

Tags

NGSS.MS-ESS2-1

The Earth is divided into ____ chemical layers and ____ physical layers.

• 3; 7

• 5; 7

• 3; 5

• 4; 3

Which layer(s) are composed of Iron and Nickle?

• A

• A & B

• C

• B & C

Layer 8 is called the...

• lithosphere

• asthenosphere

• crust

• mantle

What are the physical properties of layer 7?

• rigid

• slushy

• solid but can move slowly "plasticity"

• liquid

Tags

NGSS.MS-ESS2-1

Check all of the following that are true when comparing P and S waves.

• P waves travel through solids and liquids

• S waves stop at liquids

• They start at an earthquake

• They help us determine the structure of the Earth

• P waves move slower than s waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

On Earth, the s wave shadow zone is caused by...

• The liquid outer core

• The solid inner core

• The density differences in the mantle

• Earth does not have s wave shadow zones

Tags

NGSS.MS-PS4-2

Primary waves are _____ and secondary waves are _____.

• transverse; longitudinal

• shear; compressional

• surface; sound

• longitudinal; transverse

Two thirds of the Earth’s mass is in this layer.

• Crust

• Mantle

• Core