Layers of Earth Flashcards

What is the center of the Earth called?

What is the state of matter of the Outer Core?

The middle portion of the mantle is known as the ______.

The Mesosphere is the upper portion of the mantle.

Which layer surrounds the Inner Core?

What is the thickness range of the Upper Mantle?

What is the outermost layer of Earth called?

The Lithosphere consists of the upper mantle and the ______.

Inner Core

Center of the Earth with a thickness of 1280 km.
Composed primarily of iron and nickel.
Maintains a solid state despite extreme temperature range of 6000-7000°C.

Outer Core

Surrounds the inner core with a thickness of 2250 km.
Composed of molten iron and nickel.
Temperature ranges from 4000-5000°C.

Mesosphere

The lower portion of the mantle with a thickness of 2000-2200 km.
Composed of solid rock.
Temperatures in this layer range from 3200-4000°C.

Asthenosphere

Positioned in the middle of the mantle with a thickness of 400-600 km.
Contains molten rock.
Temperature range is between 3000-3200°C.

Upper Mantle

The upper portion of the mantle, measuring 200-300 km in thickness.
Consists of solid rock.
Temperature varies from 2800-3000°C.

Crust

The outermost layer of the Earth with a variable thickness of 5-70 km.
Primarily composed of solid rock.
Temperature is variable depending on location.

Lithosphere

Comprises the upper mantle and crust, with a total thickness of 250-300 km.
Made up of solid rock.

Test your knowledge of the Earth's layers with these flashcards. Learn about the inner core, outer core, and mesosphere, including their thickness, composition, state of matter, and temperature. This quiz is perfect for geology students and enthusiasts.