In the fission theory of the Moon's origin,
a. the Moon broke from a rapidly spinning Earth.
b. Earth and its Moon formed from the same cloud of matter.
c. the Moon formed elsewhere in the solar nebula and was later captured by Earth.
d. the Moon formed when a very massive planetesimal smashed into the young Earth.
a
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Vision Problems: A person is nearsighted with a far point of 75.0 cm.(a) What focal length contact lens is needed to give him normal vision?(b) What is the power of the corrective lens?
What will be an ideal response?
The solar neutrino problem was solved when it was discovered that neutrinos ________ during the time they take to reach the Earth
Fill in the blank(s) with correct word
Calcium carbonate is the major component of each of the following except
a. limestone. b. seashells. c. stalagmites. d. bones.
The Roche limit is the point at which:
A) the mass of an object classifies it as a moon. B) a moon orbiting a planet experiences synchronous rotation. C) the external tidal forces on an object are strong enough to be felt by the object. D) the external tidal forces on an object become greater than the internal forces that hold it together. E) the internal forces that hold an object together weaken so that the object falls apart.