Earth's Layers

Using data from seismic waves, geologists have learned that Earth's interior is made up of several

• continents

• layers

• ridges

• trenches

Geologists' main evidence about the structure of Earth's interior comes from

• temperature measurements in deep mines

• observations of other planets

• exploration of caves

• rock samples and seismic waves

Which layer of the earth do we live on?

• Crust

• Mantle

• Outer Core

• Inner Core

How does the temperature of the Earth’s mantle compare to the other layers of the Earth?

• The mantle is hotter than the core.
  

• The mantle is hotter than the crust.
  

• The mantle is the same temperature as the core.
  

• The mantle is the same temperature as the crust.
  

How does the density of the Earth’s core compare to the other layers of the Earth?

• The core is the densest layer.
  

• The core is the least dense layer.
  

• The core is only less dense than the crust.
  

• The core is only less dense than the mantle.
  

Which BEST describes the physical properties of the Earth’s core?

• semi-molten

• water and organic substances

• a solid lower part and a liquid upper part

• contains volcanic, sedimentary and granitic rocks

List the compostional layers in order from least dense to most dense.

• mantle, core, crust

• lithosphere, asthenosphere, mesosphere, inner core, outer core

• crust, mantle, core

• core, mantle, crust

The is the layer that is made of oxygen, silicon, and aluminum.

• core

• mantle

• mesosphere

• crust

In this physical layer of the Earth you will find tectonic plates.

• lithosphere

• asthenosphere

• mesosphere

• inner core

Tags

NGSS.MS-ESS2-3

Which of these two layers is a solid?

• innercore

• Outercore