At what speed does the earth rotate around the sun??? is it constant???

Question

At what speed does the earth rotate around the sun??? is it constant???

Answer 1

just remember that your standing on a planet thats evolving / revolving at nine-hundred miles an hour / its orbiting at ninety miles a second / so its 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 / its a hundred thousand lightyears side to side / it bulges in the middle / sixteen-thousand lightyears thick / but out by us its just three-thousand lightyears wide / were thirty-thousand lightyears from galatic 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.

Answer 2

Earth revolves around the sun at this speed:

•  Average orbital speed: 29.783 km/s, 107,218 km/h.

The speed at which Earth travels is not constant.

Earth revolves around the sun in an elliptical path, at:

•  Maximum orbital speed: 30.287 km/s, 109,033 km/h.

•  Minimum orbital speed: 29.291 km/s, 105,448 km/h.

Details about the variation of speed are at the links provided:

Answer 3

i doubt it's constant

since the orbit is eliptical, the earth will move faster when it's closer to the sun

but it's just barely an eliptical orbit so it's not too much different

Answer 4

The Earth's orbit is highly circular (not like, for example, Pluto's which is much more elliptical), so although the speed is less when the Earth is farther from the Sun and more when the Earth is closer to the Sun, the difference is not very big. The average speed of the Earth around the Sun is about 29783 meters per second, or 107218 kilometers per hour, according to Wikipedia.

Answer 5

u ask quest that u know humans can not get rightly.U know for ssure that it is not easy to calcullate the speed.

Answer 6

It is not constant, because our orbit is an ellipse.  Physics tells us that the earth travels faster in its orbit when it is nearest the sun (January) and slowest when it is farthest (December).  (Search "aphelion" and "perihelion" for a much more in depth understanding).  

To figure out the average, this is not too difficult.  If you have the knowledge that the earth's average distance from the sun is 93 million miles (radius), you can calculate the circumference of the orbit.  (Circumference = 2r * Pi^2)

Since you should already know (and if you don't I'm telling you) that the earth completes one full traverse of this "circumference" in one year (365.25 days), all you need to do to calculate speed is know the equation for speed:

speed = time/distance

The rest just involves plugging in the variables.

Calculating the speed at any specific moment in the earths orbit is significantly tricky, and it can be done, but you need to have the stats for how elliptical the orbit is.  I can provide you with the specific information on how to figure this out, if it's of complete interest to you.

Answer 7

The speed is not constant; however the mean velocity of the earth in its orbit about the sun is 29.78 km/second.The earth moves round the sun in an elliptical orbit with the sun at the focus.The distance of the earth from the sun varies in the course of the year,the earth being nearest to the sun in winter(in N.H)  and farthest from the sun in summer( in N.H).According to Kepler's second law of planetary motion,the area covered by the earths radial distance from the sun per unit time is constant.This means that the earth moves faster in winter than in summer.So, the speed of the earth always varies in its orbit around the sun.

Answer 8

No, it has tiny variations. Some are periodic, repeating over the course of one year or one lunar month, others are more chaotic and caused by the gravity of other planets.

But the differences are so small, that you can even work well by assuming a circular orbit with constant speed of 29.783 km/s.