Ch. 3 Section 1 Earth Dynamics

Front

What happens to colder, more dense magma near the crust?

Back

It sinks.

Front

What should you be aware of after an earthquake if you are at the beach?

Back

Tsunami.

Front

When molten material is heated in the mantle, what happens to its density?

Back

It becomes less dense and rises.

Front

What is the thinnest compositional layer of Earth?

Back

Crust.

Front

What part of the Earth do we live on?

Back

Crust.

Front

What is the mantle?

Back

The layer of Earth between the crust and the outer core, composed of semi-solid rock.

Front

What is the outer core?

Back

The liquid layer of the Earth's core, composed mainly of iron and nickel.

Front

What is the inner core?

Back

The solid, innermost layer of the Earth, composed primarily of iron and nickel.

Front

What is soil liquefaction?

Back

A phenomenon where saturated soil substantially loses strength and stiffness in response to applied stress, often during an earthquake.

Front

What causes a tsunami?

Back

A tsunami is caused by underwater earthquakes, volcanic eruptions, or landslides.