Practice Flashcard Earth's layers

Front

What is the outer core of the Earth?

Back

The outer core is the liquid layer of the Earth's core, located beneath the mantle and above the inner core. It is primarily composed of iron and nickel and is responsible for generating the Earth's magnetic field.

Front

What is the Earth's crust?

Back

The Earth's crust is the outermost layer of the Earth, consisting of solid rock. It is relatively thin compared to the other layers and is where we live.

Front

What is the mantle?

Back

The mantle is the thick layer of the Earth located between the crust and the outer core. It is composed of semi-solid rock that flows slowly over time.

Front

What happens to pressure as you travel from the center of the Earth to the surface?

Back

The pressure decreases as you move from the center of the Earth to the surface.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, which includes the crust and the uppermost part of the mantle.

Front

What is the asthenosphere?

Back

The asthenosphere is the semi-fluid layer of the mantle located beneath the lithosphere, allowing for the movement of tectonic plates.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid and composed mainly of iron and nickel, while the outer core is liquid and also composed of iron and nickel.

Front

What is the significance of the Earth's magnetic field?

Back

The Earth's magnetic field protects the planet from solar radiation and cosmic rays, and it is generated by the movement of molten iron in the outer core.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other, causing geological activity such as earthquakes and volcanic eruptions.

Front

What is the relationship between the crust and the mantle?

Back

The crust is the outer layer of the Earth, while the mantle lies directly beneath it. The two layers are separated by the Mohorovičić discontinuity (Moho).