Water In the Air

Which one of the following statements is false?

• The water on earth moves from place to place
• Water can be a solid or a liquid, but not a gas
• The total amount of water on Earth is always the same
• Some parts of the Earth receive more precipitation that here.

Which of the following powers the Earth's water cycle?

• Energy from the sun
• Clouds colliding together
• Salts dissolving in seawater
• The freezing and melting of water

Evaporation is... 

• A gas turning into a liquid
• a gas turning into a solid
• a liquid turning into a gas
• a solid turning into a liquid

What is NOT a part of cloud formation?

• Condensation
• Evaporatin
• Dew point
• Erosion

Weather is... 

• The changes that occur in cloud formations
• The amount of rain or snow that falls
• earthquakes, tornadoes, and other disasters 
• the condition of Earth's atmosphere at a given place and time

A meteorologist is a person that studies... ?

• meteors
• geology 
• weather
• space

The atmosphere is the...

• layer of gas surrounding Earth
• Name for the shape of the planet Earth
• Smoke and air pollution over a city
• moist conditions in a rain forest

A molecule of water that is in its gas form

• ice
• water vapor
• liquid
• air

Which statement is true?

• Gasses are in constant motion, liquids and solids are not
• gasses and liquids are in motion, solids are not
• all molecules are in constant motion
• no molecules are in motion unless a force moves them

Which statement is true about air?

• air has no mass
• air can be compressed
• air takes up very little space
• air is a mixture of only oxygen or nitrogen