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What would happen to a current if the temperatures at the poles increase?
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True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?
F=N*I so directly proportional
Will the gravitational poles switch?
There is no such thing as a "gravitational pole." Earth's magnetic poles periodically switch. Currently we have no way of predicting when this might happen.
Are wires and a light bulb needed to make current flow?
No, not at all, current can flow between any two opposite poles. Usually a power source and wire are used, but current flows through lightning and such.
Is an electric current a flow of charge?
Electrons are a negative charge. Using conventional notation current flows from positive to negative poles of a battery, for example. In electron flow convention the electrons flow from negative to positive.
In which case will electric current be induced in a coil of wire?
The coil must experience a changing magnetic field in order to have a current induced. You can rotate the coil between the poles of a magnet, or rotate the magnet around the coil.
Why do holes in the ozone layer happen to be located closer to the poles?
The hole in the ozone layer happen to be closer to the poles. It is because the ozone depletion occurs in very low temperatures which can only be obtained at the poles.
How do temperatures at Earths equator compare to the temperatures at the poles?
The temperatures at the equator tend to be warm to hot (except where there are mountains); the temperatures at the poles tend to be below freezing.
What general trend does a world isothermal map show?
temperatures decreasefrom the tropics toward the poles.
What are the temperatures at the poles in July?
1
Does temperature increase as latitude decrease?
No, temperatures generally decrease as latitudes increase. The equator (30° to 40°C) is 0° latitude while the poles (0° to -40°C) are at 90° latitude.
Why are average temperatures lower near the poles?
Because the earth sits on its axle (side or it's tilted) the poles don't get much sun so the temperatures are lower.
Why ozone layer is present over the poles?
The ozone hole is near the poles. It is because of the low temperatures there.
How can ocean current affect the temperature and the amount of moisture of the air mass above the current and above nearby coastlines?
Warm currents bring warm temperatures to the poles, and cold currents bring cold temperatures to the equator to become warm again. Once warm, they return to the poles again. This process repeats in some currents forever. Most currents are circular.
What causes the global convection current between the equator and the polls?
The difference in temperatures between the Equator and the north and south poles, plus the rotation of the earth, causes the air currents.
Why do global temperatures increase towards the equator?
The sun rays are more concentrated there, as you get closer to the poles the curvature of earth causes the sun's rays to be more dispersed over the Earth's crust.
What causes the global air convection current between the equator and the polls?
The difference in temperatures between the Equator and the north and south poles, plus the rotation of the earth, causes the air currents.
Why is the ozone problem worse in Antarctica?
It is because ozone depletion requires low temperatures. These temperatures can be found out at poles.
