Layers of the Earth for a test

What are the three main layers of the Earth?

Crust, mantle, and core.

What is the Earth's crust?

The thin outer layer where we live. It's solid and rocky.

Difference between the mantle and crust?

Mantle is deeper, hotter, and thicker than the crust.

What is the mantle made of?

Semi-solid rock that flows slowly. Contains silicate minerals.

True or false: The core is solid.

False, because the outer core is liquid.

What is the outer core?

A liquid layer made of iron and nickel. It generates Earth's magnetic field.

What is the inner core?

A solid center of the Earth. Extremely hot, mainly iron.

Fill the blank: The mantle is between the ____ and the ____.

Crust and core.

True or false: The crust is thicker under mountains.

True, because mountains make the crust bulge.

What creates Earth's magnetic field?

The movement of liquid in the outer core.

What is a tectonic plate?

Large pieces of the Earth's lithosphere that move on the mantle.

Difference between oceanic and continental crust?

Oceanic crust is thinner and denser than continental crust.

What happens at tectonic plate boundaries?

Plates interact, causing earthquakes or forming mountains.

Fill the blank: The Earth's layers are divided based on ____ and ____.

Composition and physical state.

What is the lithosphere?

The rigid outer part of the Earth, including the crust and upper mantle.

True or false: The inner core is as hot as the surface of the sun.

True, around 9,932°F.

What is the asthenosphere?

The upper layer of the mantle that can flow and deform.

Fill the blank: The mantle is mostly made of ____.

Silicate minerals.