Weather Instruments
Air Pressure
Vocabulary
Density
Misc.
100
This is used to measure temperature.
What is a thermometer?
100
This is what causes wind.
What is the horizontal movement of air?
100
This is a person who studies the weather.
What is a meteorologist?
100
This is the temperature of a fluid that would float on top (hot or cold) because it is less dense.
What are hot fluids.
100
This is what happens to a balloon in a vacuum when the air is removed from around the outside of it.
What is expands?
200
This is used to measure air pressure.
What is a barometer?
200
This is the mixture of gases surrounding Earth and forming its atmosphere.
What is air?
200
This is the study of weather.
What is meteorology?
200
Between hot and cold air, this is the one that is more dense.
What is cold air?
200
This is potentially hazardous or damaging weather.
What is severe weather?
300
This measures wind direction.
What is a wind vane?
300
The force exerted on a surface by the weight of the air above it.
What is air pressure?
300
This is a weather prediction.
What is forecast?
300
This is the amount of matter in an object.
What is mass?
300
This means pressed into less space.
What is compressed?
400
This measures relative humidity.
What is a hygrometer?
400
This is how high and low pressure air masses move.
What is from an area of high pressure to an area of low pressure?
400
This is the layer of gases that surrounds a planet or star.
What is atmosphere?
400
This is the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity.
What is weight?
400
This is the exertion of force upon a surface by an object, fluid, etc., in contact with it.
What is pressure?
500
This measures wind speed.
What is an anemometer?
500
These are the two main gasses in the air and their relative percents.
What are nitrogen at 78% and oxygen at 21%?
500
These are properties of air that affect weather, including temperature, humidity, pressure, and wind.
What are weather factors?
500
Both liquids and gasses are considered this.
What is a fluid?
500
This is a gas in the atmosphere that is variable.
What is water vapor?
M
e
n
u