Wind
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What causes Wind? | Wind is caused by differences in air pressure. Air moves form an area of high pressure to an area of low pressure.
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| High Pressure is what type of air? warm or cooler. | High Pressure is cooler air.
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| Low Pressure is what type of air? warm or cooler | Low Pressure is warm air.
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| What causes wind? | The air from an area of high pressure (cooler air) flows under an area of low pressure(warm air) and causes the warm air to rise.
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| What is used to measure wind speed? Hint: cups on a stick. | Wind speed is measured by an "anomometer". It has 3 or 4 cups mounted on spokes that spin an axle.
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| What are Local Winds? Hint local pizza. Made in town | Local Winds are winds made locally by heating of the earths surface. They blow short distances.
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| What are Global Winds? Hint the earth/globe. | Global winds are winds made by warming of the earth overall. They blow form long distances. Doldrums, Horse Latitudes, Trade Winds.
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| What are Doldrums | They are near the equator with little or no winds.
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| Horse Latitudes | Latitudes 30 degrees north and 30 degrees south. The earth heats up at the equator. The rises quickly and is divided. Some flows north, some flows south. Looks like a horse shoe.
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| Trade Winds | Used by early sailors who traded from Africa and Asia. Cold air from the horse sinks and it causes high pressure that cause big surface winds to blow.
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| Prevailing Winds | Winds that blow from west to east.
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| Jet Streams | High Speed winds 10km above the earth's surface. Hundreds of KM wide. Blow very fast. 200 to 400 km per hour.
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| What are the four layers of the Atmosphere? | 1: Trosposphere(0 to 12 km above it). 2: Stratosphere (from 12 km to 50 km above earth) cold -60 C, 3: Merosphere (50 to 80 km) very cold -90 C 4: Thermosphere has two parts. (80 km to 550 km) 1,800 C
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| What is the bottom layer near earth called? Hint Trops | 1: Trosposphere(from earth to 12 km above it).
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| What is the next layer after the Troposphere? Hint Strat | 2: Stratosphere (from 12 km to 50 km above earth) cold -60 C, contains ozone layer/layer of haze that traps heat.
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| What is the next layer after the Stratosphere? Hint Meros | 3: Merosphere (50 to 80 km) very cold -90 C. Meteoroids burn up in this layer.
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| What is the top layer called? Hint Thermo | 4: Thermosphere 80 km to 550 km) 1,800 C (very warm) It is the last layer before space.
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