Layers of the Earth Review

According to the graph, which type of Seismic Wave travels the fastest through the Earth?

• 
  S-Waves

• P-Waves

Scientists have concluded that Earth has distinct layers based on the _____ by which they travel.

• direction

• speed

• method

Tags

NGSS.HS-ESS2-3

Which layer is liquid (molten)?

• crust

• mantle

• outer core

• inner core

Primary (P) Waves and Secondary (S) Waves differ in the directions they move. Which correctly describes their movement?

• P Waves are longitudinal/ compressional and S Waves are transverse

• P Waves are transverse and S Waves are longitudinal/ compressional

Tags

NGSS.MS-PS4-1

The layers of the Earth have different densities. According to the graph which layer is the least dense? most dense?

• The mantle is the least dense; the crust is the most dense

• The crust is the least dense; and the inner core is the most dense

• The inner core is the least dense; and the crust is the most dense

According to the diagram, which layer is made of liquid, molten material?

• A

• B

• C

• D

Name the layers of the Earth from the center of the Earth to the surface.

• mantle, crust, inner core, outer core

• outer core, inner core, mantle, crust

• inner core, outer core, mantle, crust

• crust, mantle, outer core, inner core

Describe the density of Earth's Layers as you go from the crust to the core.

• The density is the same throughout all the layers.

• The density decreases as you move inward.

• The density increases as you move inward.

• The density isn't a factor for the layers.