AST Earth and Physical Science 2

Question 1

Which gas makes up the largest percentage of Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Argon

Question 2

The principle that physical and chemical processes operating today also operated in the past is called:

Accepted Answer

Uniformitarianism

Answer

Catastrophism

Answer

Relativity

Answer

Gradualism

Question 3

When an object is in free fall (ignoring air resistance), what force acts on it?

Accepted Answer

Gravity only

Answer

Normal force only

Answer

Friction only

Answer

Gravity and buoyancy

Question 4

The transfer of heat through direct contact between materials is called:

Accepted Answer

Conduction

Answer

Convection

Answer

Radiation

Answer

Insulation

Question 5

A mineral's resistance to being scratched is measured by its:

Accepted Answer

Hardness

Answer

Luster

Answer

Cleavage

Answer

Density

Question 6

In the water cycle, the process by which plants release water vapor into the atmosphere is called:

Accepted Answer

Transpiration

Answer

Evaporation

Answer

Condensation

Answer

Infiltration