Weather Unit

Weather refers to...

• changes in the atmosphere that occur over long periods of time.
• water cycles in the atmosphere
• atmospheric conditions at a specific time and place. 
• predictable patterns in the water cycle.

Climate is...

• subtropical
• the average weather over a long period of time in a region.
• the water cycle over a long period of time
• the circulation of energy in the atmosphere

How does the water cycle influence weather?

• it controls the distribution of water on Earth and in the atmosphere
• it ensures we have water to drink
• it causes runoff and lakes to increase in size
• it is not important at all

What increases the speed of evaporation and the amount of water vapor in the air?

• additional water in the water cycle
• additional humidity in the air
• the sun
• the amount of moisture in the air

When the humidity is high, the chance for precipitation and thunderstorms...

• increases
• decreases
• stays the same
• is not affected at all

What is a factor that helps us classify a climate?

• animal ages
• pollution levels
• human population levels
• precipitation levels

True or false: weather changes daily and perhaps hourly.

• true
• false

Changes in ______ happen as different air masses move in and out of a region. 

• precipitation
• gulf streams
• jet streams
• weather

________ are large bodies of air with the same temperature, moisture, and pressure.  

• fronts
• air masses
• clouds
• hot air balloons

The movement of one air mass affects another air mass. When one air mass meets another it forms a  

• air mass
• storm
• front
• climate