AST Earth and Physical Science 1

Question 1

Which layer of Earth is composed primarily of liquid iron and nickel?

Accepted Answer

Outer core

Answer

The outer core is made of liquid iron and nickel and generates Earth's magnetic field.

Question 2

The process by which water vapor in the atmosphere cools and becomes liquid water is called:

Accepted Answer

Condensation

Answer

Condensation occurs when water vapor loses energy and changes state to liquid water.

Question 3

According to Newton's second law of motion, force equals:

Accepted Answer

mass × acceleration

Answer

Newton's second law: F = ma (Force = mass × acceleration).

Question 4

Which type of rock forms when magma cools and solidifies?

Accepted Answer

Igneous

Answer

Igneous rocks form from the cooling and solidification of magma or lava.

Question 5

The Richter scale measures the:

Accepted Answer

Magnitude of seismic energy released

Answer

The Richter scale quantifies the magnitude (energy) of an earthquake.

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