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Geography (MEASURING TOOLS (rain gauge, barometer, thermometer, anenometer…
Geography
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Atmosphere
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Troposphere: most of gas molecules are in lowest layers, pulled down by gravity
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Clouds
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cirrus: Cirrus is a genus of atmospheric cloud generally characterised by thin, wispy strands, giving the type its name from the Latin word cirrus, meaning a ringlet or curling lock of hair
Convenctional Rainfall
- SUN WARMS THE GROUND....WHICH THEN WARMS THE AIR ABOVE IT
- CURRENTS OF WARM AIR RISES
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RELIEF RAINFALL
- warm moist air arrives from the ocean
- the air is forced to rise
- the rising air cools and rains.
Influence climate
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ocean currents: For example a warm ocean current callled the north atlantic drift warms the west coast of the uk in winter, by warming the wind
altitude: the higher you are above sea level, cooler it is.
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AIR PRESSURE
the force pressing down on us, due to the weight of atmosphere. When air rising, there's less force pressing down on us. So air pressure falls, When air is sinking it rises
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High pressure
- Warm air is rising from the water
- so cold air gets pushed aside
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- As the cold air sinks it warms up. So no water vapour condenses. no clouds form. The sky stays clear.