Geosphere/Lithosphere

What is the lithosphere made up of?

• the upper and lower mantle

• the crust and the lower mantle

• the crust and the upper mantle

How thick is the lithosphere?

• about 300-400 miles

• about 60 miles

• about 500 miles

What are silicates made of?

• silicon and basalt

• silicon and oxygen

• both A and B

Which ones describe the continental crust?

• made of mostly silicates, such as grantite

• made of dense volcanic rock, such as basalt

• approximately 4 miles thick

• approximately 22 miles thick

Which ones describe the oceanic crust?

• made of mostly silicates, such as grantite

• made of dense volcanic rock, such as basalt

• approximately 4 miles thick

• approximately 22 miles thick

What is the oldest crust?

• continental crust

• oceanic crust

What are tectonic plates?

• giant solid pieces of the lithosphere

• plates that you eat tectonic on

What causes an earthquake?

• when tectonic plates push together or pull apart

• when the ground shakes

• a volcano erupting

All living things live ___________ the Earth's crust.

• on

• below

The first layer under the crust is called the ________.

• mantle

• core

• Mt. St. Helens