Mod Weather Test

What is weather?

• The amount of moisture in the air

• The number of clouds in the sky

• The speed of the wind

• The state of the atmosphere at any particular time.

What are the characteristics of a high-pressure system?

• Wind and rain

• Humidity and thunder

• Extremely hot temperatures

• Clear skies and sun

What will happen if the relative humidity is 100 percent, and the temperature begins falling?

• It will start to rain

• The air will be sticky and uncomfortable

• The temperature will rise

• The barometric pressure will rise

This tool measures the wind speed.

• barometer

• anemometer

• thermometer

• psychrometer

What kind of weather would you expect in a low pressure system?

• Warm temperatures

• Cool temperatures

• Clear conditions

• Cloudy/rainy conditions

The amount of water vapor present in the air is called ________________.

• weather
• humidity
• air mass
• dew point

This is sometimes called a thunderhead cloud. It looks very tall like mountains and heavy rain comes from it. 

• Cumulus
• Cirrus
• Stratus
• Cumulonimbus

Warm air rises because it is __________ dense then cold air.

• More
• Less

Which weather tool measures air pressure?

• thermometer
• barometer
• anemometer
• psychrometer

A front is

• where warm air is cooling at earth's surface
• a line where hot and cold air are separating
• a line where two different air masses meet
• where cold air is rising and forming rain clouds