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Why is the air pressure lower at the Equator than at the North and South poles?
Wiki User
∙ 6y ago
because sinse the land had a lower elevation, the air is not so heavy,. Does that make sense? Okay, It you were on a mountain the air pressure would be higher than if you were on the beach.
Wiki User
∙ 16y ago
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If you are in Dallas Texas what direction would you need to travel in order to reach the equator?
You would need to travel toward the south to reach the equator. Because Dallas is in the Northern Hemisphere not the southern hemisphere. BTW the Northern Hemisphere is the upper half of the earth. The Southern Hemisphere is the lower part of the earth.
Why does it get colder the further north you go?
This is only true for the Northern Hemisphere, in the Southern Hemisphere the further south you go it gets colder. The further from the Equator you are, the lower the sun will be in the sky at noon which means it's light has to pass through more ass thickness of Earth's atmosphere. This is why the temperatures near the North and South poles are generally colder than the areas around the equator.
What causes harmattan wind?
The Harmattan is a trade wind, so in theory it is always there in some form as a result of lower pressure near the equator and high pressure just north of there. However, in the summer it is undercut by the cooler winds of the monsoon and forced to rise to higher altitudes where the effects are not felt.
What types of wind are trade winds?
Trade winds are found in the tropics in the lower section of the troposphere near the Earth's equator. The trade winds blow predominantly from the north-east in the Northern Hemisphere and from the south-east in the Southern Hemisphere.
Why do trade winds blow toward the equator?
The short, oversimplified answer - sunlight hits the equator more directly than other parts of the planet, with the sun angle becoming increasingly glancing with latitude. As a result [broad generalization coming], before any wind starts blowing, air will be hotter near the Equator than in areas surrounding it. Hotter air is more buoyant and lifts upward more easily than cooler air, but upward-moving air creates a dearth of air (lower atmospheric pressure) underneath the rising air, and air nearby will be drawn in this direction to fill the void.On a non-rotating surface air moves directly from higher to lower pressure, but the Earth rotates, so the wind direction seems to be deflected (the Coriolis Force of Effect) away from its intended target and instead bends more gently toward the lower pressure. So you get winds near the Equator that blow primarily east/west, with only a gentle bend in the direction toward the north/south [depending on your hemisphere].
What hemisphere contain the biggest portion of land?
North America, by far. Below the Equator, there is only Australia, most of South America, the lower tip of Africa, and Antarctica. But above the Equator, you've got all of North America and part of South, the bulk of Africa, Greenland, Eurasia, etc.
Where are sunspots formed?
Surprisingly, almost all sunspots are found in two bands on the Sun, just north and south of the equator. At the start of the cycle, the sunspots appear at latitudes of about 30 degrees, both north and south of the equator. Then, as the cycle continues, more appear at lower latitudes until, at the end of the cycle, most spots appear near the equator.
Where sunspots form?
Surprisingly, almost all sunspots are found in two bands on the Sun, just north and south of the equator. At the start of the cycle, the sunspots appear at latitudes of about 30 degrees, both north and south of the equator. Then, as the cycle continues, more appear at lower latitudes until, at the end of the cycle, most spots appear near the equator.
When during the year is daylight shortest?
in the winter : the sun is lower in the sky in winter so it takes less time to set :D
How fast does the world spin in 1 hour in miles per hour?
At the equator, that's about the right answer. As you go north or south of the equator, the speed becomes lower and lower, and at the poles you are essentially spinning in place.
Where are most sunspot's found?
Sunspots are most frequent about 30 degrees north or south of the equator. They tend to appear there around the maximum of the 11 year sunspot cycle. Earlier in the cycle they areseen at higher latitudes and later they are at lower latitudes.
What is the opposite of a hurricane?
In one sense, a hurricane can be the opposite of itself, in the form of a tropical cyclone.- The reason being that a cyclone occurs south of the equator, while a hurricane occurs north of the equator. Because they are on opposite sides of the equator, they spin in different directions. However, they are fundamentally the same thing, "Tropical Revolving Storms", or TRS for short.The opposite in terms of atmospheric phenomena would be a strong high-pressure system, which has greater than normal pressure while the hurricane has a much lower central pressure. Like the cyclones of the southern hemisphere, the northern continental "highs" rotate clockwise, and they move generally east and south (away from the north pole) while hurricanes generally move west and north in the Atlantic and northern Pacific.
If you are in Dallas Texas what direction would you need to travel in order to reach the equator?
You would need to travel toward the south to reach the equator. Because Dallas is in the Northern Hemisphere not the southern hemisphere. BTW the Northern Hemisphere is the upper half of the earth. The Southern Hemisphere is the lower part of the earth.
Why do the warm tropical air sink when they reach the poles?
Think of the air at the Equator as a column. If you heat it, the air in the column expands and rises, cooling as it does so. As the column gets taller, at altitude you have relatively higher pressure, and the air flows out towards a lower pressure area. When the air flows out from the top of the column, it leaves lower pressure at the surface. The opposite happens at the poles where the air is cold and dense. The column is shorter and heavier than the column at the Equator. The pressure is lower at altitude and so the high pressure air from the Equator flows there. Adding air to the top of the polar column raises the surface pressure and the air flows from there to a lower pressure area at the equator. So you get a circulation, out from the Equator to the poles at high level, and in towards the Equator at lower level. The air that left the Equator was warm when it was on the surface at the Equator, but by the time it has risen 40,000-50,000 feet and traveled several thousand miles at high altitude, it is no longer warm. The rotation of the earth and the roughness of the terrain affect the flow greatly, and the air at the surface tends to turn to the right causing rotating areas of high and low pressure.
Is Upper Egypt to the north or south of Lower Egypt?
South
Why don't winds blow directly north and south on the Earth?
That is because the Earth is rotating. The coriolis effect puts a spin on the moving air. The following video is about storms, but the principle is explained.
What direction is upper Egypt from lower egypy?
Upper Egypt is in the South and Lower Egypt is the north. This is so because the Nile River flows south to north.
