Inside Earth Review

What are the four main layers of Earth, from outside to inside.

• mantle, inner core, outer core, crust
• inner core, outer core, mantle crust
• crust, mantle, inner core, outer core
• crust, mantle, outer core, inner core

What happens to temperature as you travel toward the center of the Earth?

• It gets hotter

• It gets colder

• It stays the same

How do we know about the layers of the Earth?

• We have traveled to all of the layers of the Earth
• We have taken samples from all of the layers
• From studying earthquake waves
• All of the above

Which layer or layers of Earth have humans explored?

• just the mantle
• just the crust
• the mantle and the crust
• all of the layers of Earth

Approximately how many MILES is it to the center of the Earth?

• 400
• 4,000

• 600
• 60, 000

What is the thickest layer of Earth?

• mantle
• outer core
• inner core
• crust

What is the crust made of?

• melted rock
• metal
• magma
• solid rock

How thick is the crust?

• About 1 mile

• 1 - 2 miles

• 3 - 5 miles

• 3 - 20 miles

What is true about oceanic crust?

• It is found under the ocean.
• It is thinner than continental crust.
• It is denser (heavier) than continental crust. 
• All of the above

What is true about continental crust?

• It is located where there are continents.
• It is thicker than oceanic crust.
• It is less dense than oceanic crust.
• All of the above