Local Winds Flashcards
How is a low pressure area created?
When air is heated, its density decreases. As warm air rises, its air pressure lowers, creating a low pressure area.
True or False: Earth’s surface absorbs faster than water.
TRUE
What is wind?
Wind is the movement of air under high pressure, going towards low pressure.
True or False: Sea breezes are global winds that form during the day when cooler air over the water moves in to replace the warmer air that rises up from the land.
FALSE
Sea breezes are global winds that form during the day, when cooler air over the water moves in to replace the warmer air that rises up from the land.
True or False: Local winds are also influenced by the landscape.
TRUE
Sea breezes
Sea breezes are local winds created during the day. This occurs when cold air from the ocean tries to replace the warm air from land.
True or False: Land breezes are local winds created at night. This occurs when warm air from the ocean tries to replace the cold air from land.
TRUE
What is the difference between mountain and valley breezes?
Mountain breezes are local winds that form at night when cooler denser mountain air moves down into the valley. Valley breezes are the opposite. Valley breezes form at night, and instead of the air from going up to down, the air goes from dow to up. Low-pressure pulls the cooler air up from the valley, creating valley breezes.
Explain how a Chinook wind is formed.
As local winds blow over mountains, the winds form high-pressure systems. These systems create warm temperature, which can form intense warm winds. Local winds that sweep down mountain slopes create a Chinook wind.
Why do meteorologist measure wind speed?
Meteorologists measure the wind’s speed and direction to help graph the movement of high- and low-pressure systems, which helps them predict changing in weather patterns.
True or False: Valleys lose heat faster at night at night, and gain heat faster at day. The heat loss of mountains causes the local wind to change direction.
FALSE
Mountains lose and gain heat faster than valleys.
True or False: The heat loss of mountains causes the local wind to change direction.
TRUE
True or False: Meteorologists measure wind speed using an anemometer.
TRUE
