Fronts
Air Pressure
Clouds
Precipitation
100

cold air mass under warm one

cold front

100

what causes weather

air pressure

100

what are clouds made of 

condensed water vapor

100

precipitation is formed by

Large water droplets

200

fronts are places where ________ collide

air masses

200

by measuring air pressure, scientists can predict the ________

weather

200

clouds are formed when water vapor condenses onto _______ or _______ 

dust or smoke

200

water freezes at what temperature

32°

300

a front where warm covers cold

warm front

300

what causes air pressure

uneven atmospheric heating by the sun

300

some clouds can become _______

thunderstorms

300

sleet is ______

frozen rain

400

warm air does what

rises

400

what measures air pressure

a barometer

400

clouds drop _______

percipitation

400

what types of precipitation are there?

rain, snow, sleet, and hail.

500

what is a stationary front

two cold and warm air masses equally pushing against each other

500

In low pressure, air ________

rises

500

what type of cloud can spawn tornadoes

cumulonimbus clouds

500

what type of precipitation can destroy cars

hail