Earth Layers Flashcard

Front

What are the four main layers of the Earth?

Back

Crust, Mantle, Outer Core, Inner Core

Front

What is the composition of the Earth's crust?

Back

The Earth's crust is primarily composed of rocks such as granite and basalt.

Front

What is the primary characteristic of the mantle?

Back

The mantle is characterized by its semi-solid state and the presence of convection currents.

Front

What is the role of convection currents in the mantle?

Back

Convection currents in the mantle are responsible for the movement of tectonic plates.

Front

How thick is the Earth's crust compared to other layers?

Back

The Earth's crust is the thinnest layer compared to the mantle, outer core, and inner core.

Front

What type of rock is most commonly found in the continental crust?

Back

Granite is the most common rock type found in the continental crust.

Front

What causes the differences in temperature and density in the mantle?

Back

Differences in temperature and density are caused by the heat from the Earth's core and the pressure from the overlying layers.

Front

What is the outer core primarily composed of?

Back

The outer core is primarily composed of liquid iron and nickel.

Front

What is the inner core's state of matter?

Back

The inner core is solid due to the immense pressure despite the high temperatures.

Front

What is the significance of the lithosphere?

Back

The lithosphere includes the crust and the uppermost part of the mantle and is involved in tectonic plate movements.