# Yahoo Web Search

1. ### How can I calculate the size and rotation of the earth using the movement of the stars?

For the size of the Earth , you can replicate Eratosthenes...). Read the first website below for a general description of the calculations--pay attention to the diagram at the bottom. If you...

3 Answers · Science & Mathematics · 17/09/2009

2. ### Earth cycle - seasons? ( diagram )?

...sun counter clockwise) Starting off with the Earth at 12 o'clock on your diagram would be Spring, at 9 o'clock...clock would be Winter. Best of luck! Heres a good link to visualize...

1 Answers · Science & Mathematics · 12/02/2012

3. ### How did we find out that the earth spins around every 24 hours instead of the sky spinning around us?

... to the solar day, this is, the period of rotation of the Earth when considering the Sun as a point... around the Sun. This diagram gives a better idea: http://upload.wikimedia...

9 Answers · Science & Mathematics · 01/09/2010

4. ### If the earth did not rotate could you still define the ecliptic?

The rotation of the earth does not define the ecliptic. The ecliptic is the ... by six months of nighttime. Please see a diagram of the earth in its orbit. A picture is worth a...

4 Answers · Science & Mathematics · 27/01/2009

5. ### What do you guys think of my lunar elevator design?

...however the poles are not neatly lined up as in your diagram , the lunar poles are inclined at about 6 degrees to the axis of rotation and the Earth 's poles are inclined at 23.5 degrees to the ...

6 Answers · Science & Mathematics · 08/03/2016

6. ### Why do models of the solar system show the Earth only half lit up during the Summer Solstice?

Look at a diagram of how the Earth is lit by the Sun on the northern hemisphere summer...circle will be carried round by the Earth 's rotation in a day, but always remaining in sunlight. Now...

8 Answers · Science & Mathematics · 15/05/2009

7. ### Earth cycle - seasons? ( diagram )?

...spring. The up and down ones show the same thing or nothing. Your diagram must show the axis of the Earth and its tilt at the four seasons to illustrate what you wish. Draw...

2 Answers · Science & Mathematics · 12/02/2012

8. ### Where (what part of the Earth ) does the most wind energy originate?

... the jetstream is the effect the rotation of the earth has on this moving column of air... and probably find some really good diagrams of how this works. As rising...

2 Answers · Science & Mathematics · 30/01/2012

9. ### Why does it take longer to fly from east to west? Is it because of the wind currents?

Yes wind from the rotation of the earth creating the jet streams. Note... just near Greenland. See the diagram below from aviation meteorology ground school ...

3 Answers · Travel · 28/06/2006

10. ### if the earths spin motion was in the opposite direction, would a sidereal day be longer or shorter than a sol

... than the solar day. The sidereal day is 1 complete 360-degree rotation of the Earth relative to the "fixed" star background. This is slightly...

6 Answers · Science & Mathematics · 28/07/2008