Plate Tectonics

Tectonic plates are made up of continental crust and ________ crust.

• continental
• oceanic
• plates
• mantle

Why is the inner core solid?

• its unknown
• what it's made of
• the pressure
• it is colder than the outer core

What layer is a semisolid and acts like a plastic?

• Lithosphere
• Mantle
• Asthenosphere
• crust

What happens to pressure as we move from the crust to the inner core?

• Pressure Decreases
• Pressure Increases
• Nothing

What happens to temperature as we move from the crust to the inner core?

• Decreases
• Increases
• Nothing

Less dense materials are pushed to the top.

• True

• False

Which layer of Earth is made up of tectonic plates?

• outer core
• inner core
• asthenosphere
• lithosphere

Who is the person credited with developing the idea of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

What is this a picture of?

• plate tectonics

• continental drift

• Pangaea

• glacier scaring

What evidence did Wegener use in his idea?

• Continents and fossils fitting together/matching-up like puzzle pieces

• glacier scars and evidence from temperature

• mountain ranges and coal deposits line up across continents

• all of the above