Earth's Interior

What is the asthenosphere?

• A layer of the Earth's crust that is solid and rigid.

• A semi-fluid layer of the mantle that allows tectonic plates to move.

• The outermost layer of the Earth that is composed of water.

• A layer of the Earth's atmosphere that contains weather patterns.

What is the approximate thickness of the Earth's crust?

• 1 to 10 kilometers

• 5 to 70 kilometers

• 50 to 100 kilometers

• 100 to 150 kilometers

What role does the mantle play in plate tectonics?

• The mantle's flow allows for the movement of tectonic plates on the Earth's surface.

• The mantle is a solid layer that prevents any movement of tectonic plates.

• The mantle absorbs all seismic waves, preventing them from reaching the surface.

• The mantle is responsible for the formation of oceanic trenches.

What is the state of matter of the outer core?

• Solid

• Gas

• Liquid

• Plasma

How does the temperature change as you move towards the Earth's core?

• The temperature decreases gradually.

• The temperature remains constant.

• The temperature increases significantly.

• The temperature fluctuates unpredictably.

What is the outer core of the Earth?

• A liquid layer of the Earth's core made of heavy metals.

• A solid layer of the Earth's crust.

• A gaseous layer surrounding the Earth.

• The innermost solid part of the Earth.

What is the primary source of heat for the Earth's interior?

• The decay of radioactive isotopes.

• The friction from tectonic plate movements.

• The heat from the Earth's core due to gravitational compression.

• Solar radiation absorbed by the Earth's surface.

Which material is most likely found in the Earth's core?

• Iron

• Nickel

• Copper

• Aluminum

Where does gravity pull the densest material in a sphere?

• To the surface of the sphere.

• To the middle of the sphere.

• To the outer layers of the sphere.

• To the edges of the sphere.

How does pressure change as you go deeper into the Earth?

• Pressure decreases as you go deeper into the Earth.

• Pressure remains constant as you go deeper into the Earth.

• Pressure increases as you go deeper into the Earth.

• Pressure fluctuates randomly as you go deeper into the Earth.