questions Flashcards
Which water cycle processes are directly related to cloud formation?
Evaporation and condensation
How do we characterize an air mass that forms over land?
Dry
Process that changes liquid water to water vapor
evaporation
Severe thunderstorm is happening. What type of front has occurred?
cold front
Warm air rises because…
its less dense
Which instrument is used to measure air temperature?
thermometer
Humidity is the…
amount of water vapor in the air
Weather is a _________ condition of a certain place during a certain time.
short term
How do we name air masses? *
humidity and temperature
The boundary between two air masses is known as:
front
Wind moves from areas of ______ to areas of _______?
high pressure to low pressure
Which condition usually means cloudy, stormy weather? *
low pressure
Any form of water - solid or liquid - that falls from the sky is ________.
precipitation
Air pressure is greatest when near Earths surface because?
The air molecules are closer together.
As you climb up a mountain what happens to the air pressure? *
decreases
What kind of weather is usually associated with a high pressure system?
Sunny, dry weather
Warm air __________ because it is _______ dense than the air around it.
rises, less
Air moving from areas of high to low pressure is what creates __________. *
wind
If it is drizzling rain outside, what type of front has occurred? *
warm front
Cold air __________ because it is ________ dense than the air around it.
falls, more
How do we characterize an air mass that forms over the ocean?
wet
Which way does wind move?
Clockwise
High pressure:
Air molecules move slowly and are densely packed. The air is cool and dry and the weather is usually clear with sunny skies and light winds.
Low pressure:
Air molecules move fast and are spread out. The air is warm and moist and the weather is usually stormy, rainy, and windy.
