2007-07-16 12:48:01 · 9 answers · asked by Cleveo7 1 in Science & Mathematics ➔ Astronomy & Space
The earth rotates on it's axis (ccw when looking down from the north pole). A full revolution takes approximately 24 hours.
The direction causes the Sun to "appear" to rise in the east and set in the west.
The Earth's rotation is also responsible for the Coriolis effect, which causes cyclonic flow to be ccw in the northern hemisphere and cw in the southern hemisphere. Same thing with the direction toilets flush, and the vortex rotation of drains.
2007-07-16 13:00:09 · answer #1 · answered by Mr. Me 7 · 0⤊ 0⤋
Imagine that the sky is the inside surface of a sphere that surrounds and encloses the earth. Now picture standing on the earth looking up at the sky and imagine that the earth is rotating like a top. As it rotates it appears to you that the sky surface is actually rotating in the opposite direction so thaaat the stars are moving from east to west.
2007-07-18 10:16:35 · answer #2 · answered by Renaissance Man 5 · 0⤊ 0⤋
, rotation is a commonly observed phenomenon. Stars, planets and similar bodies all spin around on their axes (the plural of axis). The rotation rate of planets in the solar system was first measured by tracking visual features. Stellar rotation is measured through Doppler shift or by tracking active surface features.
This rotation induces a centrifugal acceleration which slightly counteracts the effect of gravity the closer one is to the equator. One effect is that an object weighs slightly less at the equator. Another is that the Earth is slightly deformed into an oblate spheroid.
Another consequence of the rotation of a planet is the phenomenon of precession. Like a gyroscope, the overall effect is a slight "wobble" in the movement of the axis of a planet. Currently the tilt of the Earth's axis to its orbital plane (obliquity of the ecliptic) is 66.5 degrees, but this angle changes slowly (over thousands of years).
2007-07-16 12:51:36 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Well, because the Earth rotates, the stars also seem to rotate around the sky, when in fact it is just the Earth.
2007-07-16 12:51:28 · answer #4 · answered by A.R 2 · 0⤊ 0⤋
Well, for all intents and purposes, the sun is stationary. We are orbiting around it causing seasons, and we are also spinning. As the Earth spins, the sun is visible to about half the planet at any time. I live on the East coast so when I am seeing the sun set I am really experiencing the East coast spinning away from the sun. 3 hours later the West coast will see the sun set because that's when the West coast is spinning away from the sun.
2007-07-16 12:52:47 · answer #5 · answered by Lady Geologist 7 · 0⤊ 0⤋
Rotation- The spinning of a astronomical body on it's axis.
Effects- We see the sun rise and set everyday. We see night.
2007-07-16 13:41:49 · answer #6 · answered by Chaya Ahuvah 3 · 0⤊ 0⤋
in fact you will see no affect in the 'sky'...at 23 degrees tilt you will observe the seasons change and the effect is astronomical...the sun is moving around the galactic center at incredible speed and we travel around the sun at great speed...do you own math...radius is 93 million miles!!...and the earth is spinning at 1000mph at the equator
2007-07-16 13:30:39 · answer #7 · answered by danawayne1954 1 · 0⤊ 0⤋
Seriously? If you can't explain this one on your own, drop your astronomy course now. Take a nice Phys Ed class instead.
2007-07-16 12:51:58 · answer #8 · answered by stork5100 4 · 0⤊ 0⤋
Again with the homework. I'm going to start posting "wrong" answers that look right and see how it affects your lazy brain.
2007-07-16 13:04:12 · answer #9 · answered by Anonymous · 0⤊ 0⤋