Vibrations that travel through Earth are called

The Earth's crust makes up about what percentage of the Earth's mass?

What are the two types of crust? (Select 2 answers)

The outer boundary of the crust is named after its discoverer

What is the layer that is below the crust, denser, and makes up 2/3 of the Earth's mass?

What is the center of the Earth is called

Which 2 compositional layers are not in the correct order from the outermost layer to the innermost layer of the Earth? (Select 2 answers)

Which is not one of the five structural zones of Earth?

The Earth has 2 magnetic poles-North and South geomagnetic poles.

Which structural zone is the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle?

Which structural zone is known as the "middle sphere." Found between the asthenosphere and the outer core?

The solid, plastic layer of the mantle below the lithosphere where the tectonic plates more freely?

This structural zone is a dense, solid mass.

This structural zone is a dense liquid.

What is the force of attraction that exists between all matter in the universe?

Who was the 17th century scientist to first explain gravity?

The Law of Gravitation states the force of attraction between any two objects depends on the masses of the objects and the distance between the objects.

What is the measure of the strength of the pull of gravity on an object?

The mass of an object does not change with location. However an object's weight depends on its mass and its distance from the Earth's center.

The Law of Gravitation states that the force of gravity decreases as the distance form the Earth's center increases.

If the distance between the Earth's surface and its center of gravity is greater at the equator than at the North and South Poles, this difference in the distance means that your would weigh less at the equator than at the North or Sole Poles (0.3%).