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| − | ==Spring Scale==
| + | #Redirect [[Weight Variation by Latitude]] |
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| − | http://physicstasks.eu/930/spring-scale-on-the-pole-and-on-the-equator
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| − | {{cite|We calibrated a spring scale on the North Pole and then we moved the scale to the Equator.
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| − | Does the spring scale give the same readings as on the pole? Give reasons.}}
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| − | https://www.pmfias.com/pressure-belts-pressure-systems-equatorial-low-sub-tropical-high-sub-polar-low-polar-high/
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| − | {{cite|World Distribution of Sea Level Pressure
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| − | The atmosphere exerts a pressure of 1034 gm per square cm at sea level. This amount of pressure is exerted by the atmosphere at sea level on all animals, plants, rocks, etc.
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| − | Near the equator the sea level pressure is low and the area is known as equatorial low. Along 30° N and 30° S are found the high-pressure areas known as the subtropical highs. Further pole wards along 60° N and 60° S, the low-pressure belts are termed as the sub polar lows. '''Near the poles the pressure is high and it is known as the polar high.'''}}
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| − | and further down:
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| − | {{cite|Polar High Pressure Belt
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| − | - The polar highs are small in area and extend around the poles.
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| − | - They lie around poles between 80 – 90° N and S latitudes.
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| − | Formation
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| − | - The air from sub-polar low pressure belts after saturation becomes dry. This dry air becomes cold while moving towards poles through upper troposphere.
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| − | - The cold air (heavy) on reaching poles subsides '''creating a high pressure belt at the surface of earth.'''}}
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