plate tectonics

Front

What happens to temperature, pressure, and density as you travel from the inner core to the crust?

Back

They all decrease.

Front

What occurs at a divergent boundary?

Back

Plates pull apart.

Front

What is the layer of the Earth that is divided into pieces called tectonic plates?

Back

Lithosphere.

Front

What was the name of the giant landmass that existed 200 million years ago?

Back

Pangaea.

Front

How do scientists estimate the thickness of each layer of the Earth?

Back

By studying seismic waves.

Front

What is the outermost layer of the Earth called?

Back

Crust.

Front

What is the process called when one tectonic plate moves under another?

Back

Subduction.

Front

What type of boundary occurs when plates slide past each other?

Back

Transform boundary.

Front

What is the layer of the Earth located between the crust and the outer core?

Back

Mantle.

Front

What is the theory that explains the movement of tectonic plates?

Back

Plate tectonics.