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How have the earth's magnetic poles moved over in the last couple of centuries?
it is moving in clock-wise direction from the poles
Where do the rays of the sun strike most directly on the earth the equator at the poles in the temperate zone or over the oceans?
i think it was at the equator or poles
In what area of the earth would one find seasonal ozone depletion?
Over the poles.
Where above the earth is the ozone layer depleted?
It is depleted over Antarctica. It is because low temperatures over the poles.
Is Earth's axis on land?
Yes ! Earth's axis passes through the north and south poles ! The earth is 'tilted over' by about 11 degrees.
What do polar orbiting satellites do?
Polar orbits pass over the north and south poles of the Earth.
Does the flipping over of the earth's magnetic poles mean that thee whole planet physically flip over?
no. the polarity changes only
When does earth's magnetic poles reverse?
They vary widely and are not regular, but the earth's magnetic poles have flipped as frequently as twice in a 50,000 year timespan but have also held steady (not reversed) over as many as 50 million years.
Were the earth's poles always in the current position?
No. Over many millions of years they have wandered large distances.
Why the distance between two parallels is always equal except at the poles?
On a flat surface, in plane geometry, two parallel lines never meet; they are perfectly aligned with each other, so that they neither approach nor diverge from each other, at any distance. Parallel lines can meet at the poles, but not in plane geometry; this happens in spherical geometry. If the lines are on a sphere, such as, for example, the lines of longitude that are used (in conjunction with lines of latitude) to specify locations on the planet Earth, parallel lines meet at the poles. On a large scale, these parallel lines look completely different from those of plane geometry, but on a small scale, these huge circles will look much like line segments of plane geometry. Over short distances, the spherical surface of the Earth appears to be flat.
Why is it summer in the southern hemisphere when it is winter in the northen hemisphere?
Summer is when the sun is most direct over a hemisphere. It alternates between hemispheres because the earth's axis (the line between the earth's north and south poles about which the earth spins) is tilted (not perfectly perpendicular) relative to the earth-sun plane, and as the earth revolves (or orbits) around the Sun, the tilt presents cycling points toward the sun.
Is gravity on hill less than on plane?
Gravity on a plane is less then on a hill because you are away from the earth, However gravity in a plane over a hill is more then gravity on a plane over a valley at the same altitude above sea level.
