Unit 3 Formation of the Earth Test

Front

What is the most important function of Earth's magnetic field?

Back

Earth's magnetic shield deflects most of the solar wind.

Front

What are the 4 rocky planets closest to the sun called?

Back

Inner planets.

Front

What is the composition of today's Earth's atmosphere?

Back

78% Nitrogen, 21% Oxygen.

Front

How many atmospheres has Earth experienced?

Back

3.

Front

What is the physical layer of soft mantle that tectonic plates move on?

Back

Asthenosphere.

Front

What is the outermost layer of the Earth called?

Back

Crust.

Front

What is the layer beneath the Earth's crust?

Back

Mantle.

Front

What is the Earth's innermost layer?

Back

Inner Core.

Front

What is the term for the movement of tectonic plates?

Back

Plate tectonics.

Front

What is the process by which rocks are broken down by weathering?

Back

Erosion.