definitions
What is calculated by mass divided by volume?
A. altitude
B. air pressure
C. density
density
Which is a measure of distance above the Earth's surface?
A. pressure
B. altitude
C. millibars
altitude
True or False
In Earth's atmosphere, as altitude increases, air pressure decreases.
TRUE
What is the silvery material called that is inside a barometer?
mercury
Air pressure goes up when:
a. density increases
b. density decreases
A. density increases
A. humidity
B. air pressure
C. temperature
humidity
Which is a measure of the amount of force applied to a set area?
A. pressure
B. density
C. mass
pressure
True or False
Air pressure decreases as the temperature of air increases.
TRUE
In a barometer, when air pressure DECREASES what happens to the column of "liquid"?
It falls
Air pressure goes down when:
A. humidity goes up
B. humidity goes down
A. humidity goes up
What are pressure units used by meteorologists when describing and forecasting weather?
A. millibars
B. barometer
C. pressure
millibars
What is volume (or an amount of space) with little or no matter in it?
A. density
B. mass
C. vacuum
vacuum
True or False
Air pressure at sea level is always lower than air pressure on the top of a mountain.
FALSE
In a barometer, when air pressure INCREASES, what happens to the column of "liquid"?
It rises
Air pressure increases when:
A. temperature increases
B. temperature decreases
B. Temperature decreases
Which is an instrument used to measure changes in the air pressure?
A. meteorology
B. thermometer
C. barometer
barometer
What is a measure of the amount of matter in a set volume?
A. mass
B. density
C. volume
density
True or False
Stormy, wet weather is associated with conditions of high air pressure.
FALSE
What is a barometer used for?
measures changes in air pressure
Air pressure decreases when:
A. density decreases and altitude increases
B. humidity decreases and temperature decreases
A. density decreases and altitude increases
A. air pressure
B. altitude
C. mass
air pressure
Which is an instrument used to measure air pressure changes?
A. barometer
B. thermometer
C. degrees celsius
barometer
Make this statement true:
Inches of mercury are the units used by meteorologists to describe air pressure conditions and changes in air pressure.
MILLIBARS are the units used by meteorologists to describe air pressure conditions and changes in air pressure.
What unit of measurement is used by meteorologists to describe air pressure?
millibars
What happens to air pressure as the air gets dryer?
Air pressure increases