S 8.3 Earth Layers and Plate Tectonics

Front

What is the Earth's crust?

Back

The Earth's crust is the outermost layer of the Earth, which is solid and relatively thin compared to the other layers.

Front

How is the crust different from the other layers of the Earth?

Back

The crust is thinner than the mantle and core.

Front

What type of plate boundary occurs when two plates move apart?

Back

Divergent boundary.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates move towards each other, often causing one plate to be forced below the other.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other horizontally.

Front

What is the inner core made of?

Back

The inner core is made up of solid iron and nickel.

Front

What is the outer core?

Back

The outer core is a liquid layer composed mainly of iron and nickel, located beneath the mantle and surrounding the inner core.

Front

What is the mantle?

Back

The mantle is the thick layer of rock between the Earth's crust and outer core, composed of silicate minerals.

Front

How are the crust and the inner core alike?

Back

Both the crust and the inner core are solid.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the upper part of the mantle.