Earth Science Quiz

Earth is the ______ planet from the Sun.

• 2nd

• 3rd

• 4th

• 5th

In terms of size, Earth is the ______ largest planet in the solar system.

• 3rd

• 4th

• 5th

• 6th

Earth is estimated to have formed approximately ______ years ago.

• 3.2 billion

• 4.5 billion

• 5.1 billion

• 6.3 billion

Earth's rotational period is closest to:

• 22.5 hours

• 23.9 hours

• 24.5 hours

• 25.3 hours

This is the innermost layer of Earth's geosphere, composed of dense, metallic materials.

• Mantle

• Core

• Crust

• Lithosphere

This layer of the geosphere is rich in magnesium and iron and is semi-solid.

• Crust

• Core

• Mantle

• Lithosphere

The outermost, rocky layer of Earth's geosphere is called the:

• Crust

• Core

• Mantle

• Lithosphere

The lithosphere includes the ______ and the uppermost part of the mantle.

• Core

• Mantle

• Crust

• Tectonic plates

This scientist was one of the first to study lithosphere motion in 1914.

• Alfred Wegener

• Joseph Barrell

• Harry Hess

• James Hutton

Compared to continental lithosphere, oceanic lithosphere is ______.

• Less dense

• Denser

• The same density

• Nonexistent