8th Grade

8th Grade

Layers of the Earth

Multiple Choice

Which layer of the Earth do we live on?

• mantle

• core

• crust

Multiple Choice

If the Earth was an egg, what part would we live on?

• The shell

• The yolk

• the white part

Multiple Choice

As we journey to the center of the Earth, .....

• The temperature increases but the pressure decreases

• Both the temperature and pressure increases

• The pressure increases but the temperature decreases

• Both the temperature and pressure decrease

Multiple Choice

The crust of the Earth is made of ........

• Iron and Nickel

• Silicates (SiO₂)

Multiple Choice

The core of the Earth is made of....

• Iron and Nickel

• Silicates (SiO₂)

Multiple Select

Oceanic Crust is (Check all that apply)

• more dense than continental

• Thinner than continental

• less dense than continental

• Made of Basalt type rocks

Multiple Choice

The crust is made of two layers: Which layer flows like toothpaste and is the uppermost part of the mantle?

• lithosphere

• asthenosphere

Multiple Choice

In the mantle, hot material nearest to the core _________. As it nears the top it, ______ and ______. This creates _______________ _____________

• drops, heats up and rises, convection currents

• rises, heats up and drops, a whirpool

• rises, cools and drops, convection currents

Open Ended

Mars has a very thin atmosphere that constantly gets blown away by solar winds. It also has a dead core with no convection currents. Why would life on Mars be nearly impossible?

Multiple Choice

Which layer of the core is solid?

• inner

• outer