White, thin, feathery clouds, usually made of ice crystals are...

• Stratus
• Cumulus
• Cirrus

An anemometer is used to measure...

• air pressure
• humidity
• precipitation
• wind speed

The layer of the atmosphere where weather occurs is the _.

• thermosphere
• stratosphere
• mesosphere
• troposphere

An instrument used to measure the amount of rainfall

• barometer
• thermometer
• rain guage
• wind sock

the amount of water vapor in the air

• warm front
• precipitation
• humidity
• air pressure

An instrument used to measure how hot or cold something is

• barometer
• thermometer
• wind sock
• rain guage

An instrument that measures air pressure

• thermometer
• barometer
• rain guage
• wind sock

_____________ has the same temperature and moisture content throughout. 

• convection current
• front
• air mass

Which term describes a circulation of air or water that is caused by uneven heating?

• convection current
• conduction current
• radiation current
• emission current

Every few years, an event occurs in which the waters in the eastern Pacific Ocean become warmer. This event changes weather patterns worldwide, causing drought, floods, blizzards, hurricanes and tornadoes. What is the name of this event?

• Kuroshio Current
• Global conveyor
• El Nino
• Typhoon