Numerous meteorites found on Earth originated from which planet?
a. Mercury
b. Venus
c. Mars
d. Jupiter
e. Saturn
c
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The reason the rings of Saturn exist is because
A) the ring material lies within the Roche limit of Saturn. B) the gravitational influence of Titan confines them to those orbits. C) the eruptions of Mimas' volcanoes are keeping them supplied with ice. D) there has not been sufficient time for the ring particles to form a moon. E) Saturn's rapid rotation is spinning material away from its equator, out into space.
When subsurface ground material is completely saturated with water, we call it
A) the water table. B) groundwater. C) the saturated zone. D) the unsaturated zone.
Electrons
a)have a positive charge. b)have a mass greater than a proton. c)possess a negative electric charge. d)have the same mass as a proton.
One possible ingredient of dark matter is known as WIMPs, or weakly interacting massive particles. Our best guess is that WIMPs probably are made of protons and neutrons
Indicate whether the statement is true or false