The Water Cycle 2018

Water continually cycling between the troposphere, land, and ocean is called the

• water cycle

• nitrogen cycle

• humidity cycle

• oxygen cycle

Water falling to Earth as rain, snow, sleet, freezing rain, or hail is called

• evaporation

• precipitation

• condensation

• relative humidity

What determines which form precipitation will take as it falls?

• wind speed

• relative humidity

• weather conditions

• time of day

What is the process in which liquid water changes to a gas (water vapor)?

• condensation

• precipitation

• surface-water flow

• evaporation

What causes water to evaporate?

• ocean currents

• cloud formation

• precipitation

• thermal energy from the Sun

What do you call the process of plants releasing water vapor?

• photosynthesis

• solar energy

• transpiration

• transportation

What do you call the process in which water vapor rises in the atmosphere, cools, and forms clouds?

• precipitation

• condensation

• evaporation

• sublimation

What must be present for clouds to form?

• a surface for water vapor to condense on

• temperature below - 40 degrees Celsius

• wind speed of 40 km per hour

• thunder and lightning

What is formed when water vapor condenses to form liquid droplets on leaves, grass, or a car?

• frost

• dew

• hail

• sleet

What is it called when water vapor changes directly into ice crystals?

• dew

• precipitation

• crystallization

• condensation