How fast does the earth turn?

Question

How fast does the earth turn?

Answer 1

Just remember that you're standing on a planet that's evolving

And revolving at nine hundred miles an hour,

That's orbiting at nineteen miles a second, so it's reckoned,

A sun that is the source of all our power.

The sun and you and me and all the stars that we can see

Are moving at a million miles a day

In an outer spiral arm, at forty thousand miles an hour,

Of the galaxy we call the 'Milky Way'.

Our galaxy itself contains a hundred billion stars.

It's a hundred thousand light years side to side.

It bulges in the middle, sixteen thousand light years thick,

But out by us, it's just three thousand light years wide.

We're thirty thousand light years from galactic central point.

We go 'round every two hundred million years,

And our galaxy is only one of millions of billions

In this amazing and expanding universe.

The universe itself keeps on expanding and expanding

In all of the directions it can whizz

As fast as it can go, at the speed of light, you know,

Twelve million miles a minute, and that's the fastest speed there is.

So remember, when you're feeling very small and insecure,

How amazingly unlikely is your birth,

And pray that there's intelligent life somewhere up in space,

'Cause there's naff-all down here on Earth.

Answer 2

too fast when i have a hangover!

Answer 3

300 miles an hour

and thats if you fill up with super unleaded

Answer 4

About one revolution per day.

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Answer 5

The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour.

If by "turning" you mean the rotation of the Earth about its axis (where axis just means the straight line between the North and South poles) it is quite easy to figure out how fast any part of the Earth's surface is moving.

The Earth rotates once in a few minutes under a day (23 hours 56 minutes 04. 09053 seconds). This is called the sidereal period (which means the period relative to stars). The sidereal period is not exactly equal to a day because by the time the Earth has rotated once, it has also moved a little in its orbit around the Sun, so it has to keep rotating for about another 4 minutes before the Sun seems to be back in the same place in the sky that it was in exactly a day before.

An object on the Earth's equator will travel once around the Earth's circumference (40,075.036 kilometers) each sidereal day. So if you divide that distance by the time taken, you will get the speed. An object at one of the poles has hardly any speed due to the Earth's rotation. (A spot on a rod one centimeter in circumference for example, stuck vertically in the ice exactly at a pole would have a speed of one centimeter per day!). The speed due to rotation at any other point on the Earth can be calculated by multiplying the speed at the equator by the cosine of the latitude of the point.

The Earth is doing a lot more than rotating, although that is certainly the motion we notice most, because day follows night as a result. We also orbit the Sun once a year. The circumference of the Earth's orbit is about 940 million kilometers, so if you divide that by the hours in a year you will get our orbital speed in kilometers per hour. We are also moving with the Sun around the center of our galaxy and moving with our galaxy as it drifts through intergalactic space.