The Earth's Layers

Front

What is the outer core of the Earth?

Back

The outer core is a liquid layer composed mainly of iron and nickel, located beneath the mantle and above the inner core.

Front

Is the crust divided into two parts?

Back

False. The crust is divided into two parts: the continental crust and the oceanic crust.

Front

What state of matter is the outer core?

Back

The outer core is liquid.

Front

What is the name of the layer that is above the mantle?

Back

The layer above the mantle is called the crust.

Front

Where do geologists typically look for oil and gas?

Back

Geologists typically look for oil and gas in sedimentary rocks located in the crust, not in the core.

Front

What are the three main layers of the Earth?

Back

The three main layers of the Earth are the crust, mantle, and core.

Front

What is the mantle made of?

Back

The mantle is made of solid rock that flows slowly over time, composed mainly of silicate minerals.

Front

What is the inner core?

Back

The inner core is a solid sphere made primarily of iron and nickel, located at the center of the Earth.

Front

How thick is the Earth's crust?

Back

The Earth's crust is about 5 to 70 kilometers thick, depending on whether it is oceanic or continental.

Front

What is the difference between the continental crust and oceanic crust?

Back

The continental crust is thicker and less dense than the oceanic crust, which is thinner and denser.