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VOCABULARY
WEATHER INSTRUMENTS
WHAT CAUSES WEATHER?
WHAT CONDITIONS AFFECT THE WATER CYCLE?
HOW CAN WEATHER PATTERNS BE OBSERVED?
100
The weight of the atmosphere pressing down on Earth.
What is air pressure?
100
This tool measures the presence of heat.
What is a thermometer?
100
The driving force behind all weather.
What is the sun?
100
The amount of water found in the atmosphere.
What is humidity?
100
The border where two air masses meet.
What is a front?
200
Winds that blow constantly from the same direction.
What are prevailing winds?
200
This instrument measures air pressure at a particular place.
What is a barometer?
200
This results in air traveling in curved paths around the Earth.
What is Earth's rotation on its axis?
200
The structure that forms when water vapor cools and condenses.
What are clouds?
200
Big, dark clouds that usually produce some type of precipitation.
What are cumulonimbus clouds?
300
The part of the water cycle when gas changes to a liquid.
What is condensation?
300
This tools shows wind direction.
What is a wind vane?
300
The layer of the Earth where most weather occurs.
What is the troposphere?
300
The only form of liquid precipitation.
What is rain?
300
The direction most of Boston's weather comes from.
What is west?
400
A large body of air that has the same temperature and humidity.
What is an air mass?
400
This tool measures wind speed.
What is an anemometer?
400
Cold air sinks and warm air rises.
What is uneven heating of the Earth's atmosphere?
400
Water vapor that has condensed to form small water droplets close to the ground.
What is fog?
400
A land formation that may cause a rain shadow.
What are mountains?
500
The pattern of weather an area generally experiences over a long period of time.
What is climate?
500
This instrument measures the amount of humidity in the air.
What is a hygrometer?
500
The type of air mass that forms over the cold, North Atlantic waters.
What is maritime polar?
500
The precipitation that forms when liquid water passes through air that is cold enough to freeze water droplets.
What is snow, hail, or sleet?
500
The study of atmospheric conditions and the weather they bring.
What is meteorology?