Earth Layers/Plate Tectonics

Front

What is the theory that explains the movement of continents over time?

Back

Continental Drift

Front

What evidence did Wegener use to support his theory of continental drift?

Back

Animal fossils found on different continents that could not have swum across oceans.

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move away from each other, such as the Great Rift Valley.

Front

How do temperature and pressure change as you go deeper into the Earth?

Back

Both temperature and pressure increase.

Front

What pattern do geologists observe in the age of rocks on the sea floor?

Back

Rocks get older as they get farther away from mid-ocean ridges.

Front

What is the Earth's outermost layer called?

Back

The Crust.

Front

What is the layer of the Earth beneath the crust?

Back

The Mantle.

Front

What is the core of the Earth primarily made of?

Back

Iron and Nickel.

Front

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

Back

Subduction.

Front

What geological feature is formed at convergent boundaries?

Back

Mountains, trenches, and volcanic arcs.