1. The prevailing wind brings, warm, moist air from the ocean. 2. The air is forced to rise over hills or mountains. 3. The rising air cools and the water vapour condenses to form clouds and rain. 4. As the air then descends and bcm drier
Relief rainfall (Relief means the shape of the land.)
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15
How is the wind direction measured?
By the direction the wind is blowing away from.
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15
What is another name for very large storm clouds?
Cumulonimbus
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15
Which type of climate zone experiences hot and wet conditions all year?
Tropical
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15
Which types of clouds bring rain?
Nimbus
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15
In the Northern Hemisphere, an air mass from the South brings with it what characteristics?
Tropical
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15
Which type of weather is measured in millibars?
Air pressure
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15
What is the name of the device which is used to measure wind speed?
An anemometer
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15
Water falling from the sky as rain, hail, sleet and snow is called what?
Precipitation
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15
The average weather over a long period of time and over large areas.
Climate
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15
The sun heats the ground causing any moisture to evaporate and form water vapour. As the warm, moist air rises it cools and condenses into clouds and eventually rain.
Convectional rainfall
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15
Gale force winds that the British Isles are most commonly caused by depressions travelling across which ocean?