geog homework.....
2007-05-22 14:59:39 · 8 answers · asked by lolita 2 in Science & Mathematics ➔ Earth Sciences & Geology
the semi-solid mantle below the crust is always moving, propelled by convection currents and other forces. the plates move with them.
2007-05-22 15:15:44 · answer #1 · answered by Ewaj 3 · 1⤊ 0⤋
Tectonic plates move because of pressure against each other.
2007-05-22 22:05:08 · answer #2 · answered by Anonymous · 0⤊ 1⤋
It is presumed the currents in the magma that forms the core of the earth provide the motive force and the currents are the product of differential heating and the rotation of the earth.
2007-05-22 22:07:19 · answer #3 · answered by Mike1942f 7 · 0⤊ 1⤋
since the plates are essentially 'floating' on the molten core of the earth, and the fluid is ever moving as all fluids do, the motion moves what lies on top of it.
2007-05-22 22:04:25 · answer #4 · answered by a_rog42 2 · 0⤊ 1⤋
earth is a dynamic body the continents are moving away from each other, hence plate movement
2007-05-22 22:03:10 · answer #5 · answered by cheyenne95129 3 · 0⤊ 1⤋
if you put them all together they fit. they move because they float on the liquid mantle of the core. scary isn't it??? just remember that there is no gravity, the world sucks! sleep well!
2007-05-22 22:06:10 · answer #6 · answered by Anonymous · 0⤊ 1⤋
some basic principles...
http://en.wikipedia.org/wiki/Plate_tectonics
also try to google your question.
Good Luck!
2007-05-22 22:08:34 · answer #7 · answered by Baby 2 · 0⤊ 1⤋
pressure! magnetics!
2007-05-22 22:03:52 · answer #8 · answered by RayM 4 · 0⤊ 1⤋