Weather Unit Vocabulary

created by uneven heating of the land and water; Occurs at night when the land cools faster than the water. The Air above the sea rises and is replaces by air coming from over the land.

• land breeze
• Jet Stream
• Gulf Stream
• Sea breeze

created by uneven heating of the land and water; Occurs during the day when the land heats up faster than the water. The air above the land rises and is replaced by air coming from the sea.

• Jet Stream
• Sea breeze
• Land breeze
• Up Draft

the force of air pressing down; decreases with altitude; moves from areas of high pressure to areas of low pressure

• humidity
• barometer
• air pressure
• weather

air molecules are less dense;  cloudy, rainy, dreary weather

• High Pressure
• Jet Stream
• condensation
• Low Pressure

 air molecules are more dense; sunny, clear weather

• High Pressure
• Stable Pressure
• Low Pressure
• No Pressure

the measure of heat energy

• humidity
• precipitation
• thermometer
• temperature

form depends on temperature, occurs after condensation

• evaporation
• condesation
• precipitation
• runoff

caused by an increase in heat energy
change from liquid to a gas

• evaporation
• condensation
• precipitation
• runoff

caused by a loss of heat energy
change from a gas to a liquid

• evaporation
• condensation
• runoff
• precipitation

the amount of water vapor in the air

• air pressure
• temperature
• humidity
• rain