What is the smallest unit of matter?

• Molecule

• Atom

• Compound

• Element

What describes the continuous movement of carbon?

• Carbon cycle

• Nitrogen cycle

• Oxygen cycle

• Water cycle

What is the process of water changing from liquid to gas called?

• Condensation

• Evaporation

• Precipitation

• Transpiration

What is the process of water vapor turning into liquid called?

• Evaporation

• Sublimation

• Precipitation

• Condensation

What do we call water that falls from clouds?

• Transpiration

• Precipitation

• Condensation

• Evaporation

What cycle involves the movement of nitrogen from air to soil?

• Oxygen cycle

• Carbon cycle

• Nitrogen cycle

• Water cycle

What is nitrogen fixation?

• Changing nitrogen gas into a usable form

• Moving nitrogen to the atmosphere

• Evaporating nitrogen

• Condensing nitrogen

What is the continuous movement of oxygen called?

• Water cycle

• Nitrogen cycle

• Carbon cycle

• Oxygen cycle

What is the process of water moving from Earth's surface into the atmosphere called?

• Transpiration

• Precipitation

• Condensation

• Evaporation

What is the term for the solid form of precipitation?

• Fog

• Mist

• Rain

• Hail