Science Chapter 5

a thin blanket of gases and dust particles that surrounds the earth

• atmosphere

• air

• altitude

• precipitation

a mixture of nitrogen, oxygen, carbon dioxide, and other gases in the atmosphere

• air

• air mass

• front

• wind

the pressure caused by the weight of the gases in the air

• air pressure

• air mass

• wind pressure

• wind mass

a measurement of the distance above sea level

• altitude

• air pressure

• air mass

• precipitation

the condition of the atmosphere at any moment in time

• weather

• atmosphere

• wind

• precipitation

moving air

• wind

• air mass

• air

• atmosphere

a large body of air that has about the same temperature and moisture

• air mass

• air pressure

• atmosphere

• front

the boundary formed when two unlike air masses meet

• front

• air mass

• weather

• altitude

winds that move in large circular belts around the earth

• global winds

• air mass

• front

• weather

a wind that is influenced by temperature changes in a small area or place

• local winds

• global winds

• precipitation

• atmosphere