AST Earth and Physical Science

Question 1

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

Accepted Answer

Outer core

Answer

Crust

Answer

Mantle

Answer

Inner core

Question 2

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

Accepted Answer

Condensation

Answer

Evaporation

Answer

Transpiration

Answer

Precipitation

Question 3

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

Accepted Answer

mass × acceleration

Answer

mass × velocity

Answer

weight × speed

Answer

momentum × time

Question 4

Which type of rock forms when magma cools and solidifies?

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Answer

Composite

Question 5

The Richter scale measures the:

Accepted Answer

Magnitude of seismic energy released

Answer

Depth of an earthquake

Answer

Speed of tectonic movement

Answer

Duration of ground shaking

Question 6

What causes the seasons on Earth?

Accepted Answer

The tilt of Earth's axis as it orbits the Sun

Answer

Changes in Earth's distance from the Sun

Answer

Differences in the Moon's gravitational pull

Answer

Variations in solar flare activity