Since the Earth has managed to hold water in a liquid state for over four billion years and since the Sun has heated up by some 25% during the same time, why has the water in the oceans remained liquid?. The amount of greenhouse gases over this time, although varying widely, fails to fully explain the problem.
Therefore has the Earth managed to increase its distance from the Sun's heat during geological time?
2006-07-20 08:32:25 · 5 answers · asked by quirkyken 1 in Science & Mathematics ➔ Earth Sciences & Geology
No, there is no evidence for this. However, there is evidecne for the day lengthening.
I'm not sure about your source about the sun getting hotter, if anything, it's getting cooler. He fusion, the current stage of the sun's life cylce, is cooler than the H fusion stage of the past.
2006-07-20 08:52:05 · answer #1 · answered by QFL 24-7 6 · 0⤊ 1⤋
Actually I would thing that over time earth’s orbit has decreased or decayed as it slows down because of friction formed from installer gases, dust and other things (See *1). The only thing that keeps an object say the earth in orbit around another object with greater gravitational mass (the sun) is speed.
An orbit is basically a satellite free falling around or over the side of a parent body. For example: When the Space shuttle blast in to orbit it must obtain a speed of around 17000mph.*1 It has to have this speed so that as earth’s gravity try’s to pull in back down it can keep falling over the horizon or edge.
Also the speed to stay in orbit depends on the mass of the satellite (orbiting object) and the mass of the parent body (object it is orbiting).
Have earth’s solar orbit slowed? No also I can't see how it would start speeding up.
Why has the water in the oceans remained liquid? Atmospheric Presser, Earth mean distance from the sun and the constant rotation of the earth.
2006-07-20 09:08:51 · answer #2 · answered by marcusviii_bloodfin1 2 · 0⤊ 0⤋
First, 25% isn't all that much, geologicallly. Since Terra's orbit is not altogether uniform, your explanation may lie in our wobble. And don't forget that the temperature range in which water remains in a lIquid state, is several hundred degrees Fahrenheit. 212 degrees, in fact, and that the larger the body of water, the longer it takes to change its state.
2006-07-20 08:52:17 · answer #3 · answered by kaththea s 6 · 0⤊ 0⤋
our solar system, like the universe, has been expanding since day1,according to the Big Bang Theorists. the further we move away, our rotation slows, lessening gravitational pull, therefore flinging us all into outer space,where we would all explode form the lack of pressure. so when you feel the pressure of everyday life, relax, cause if the world didn't suck where would we be? exploding in space.
2006-07-20 08:53:41 · answer #4 · answered by mstrbldr 1 · 0⤊ 0⤋
Not sure, but I know the moon is moving further in its orbit. Soon no solar eclipses.
2006-07-20 08:39:55 · answer #5 · answered by Woody 6 · 0⤊ 0⤋