The large gaps in the asteroid belt (often called Kirkwood gaps) are caused by
A) large asteroids that clear certain regions of the asteroid belt.
B) tidal forces from Jupiter.
C) tidal forces from the Sun.
D) orbital resonances with Jupiter.
E) the competing gravitational tugs of Mars and Jupiter.
D
You might also like to view...
As rock is heated, the first minerals to melt are those
A) with the highest melting point. B) with the lowest melting point. C) composed of granitic magma. D) that have undergone partial distillation.
Why do scientists believe Venus lacks plate tectonics?
Indicate whether the statement is true or false
Two masses, MA and MB, with MB = 2MA, are released at the same time and allowed to fall straight down. Neglect air resistance. When we compare their kinetic energies after they have fallen for equal times, we find that
a. KB = KA. b. KB = 2KA. c. KB = 4KA. d. KA = 2KB. e. KA = 4KB.
If a light signal and a radio signal were emitted simultaneously from Alpha Centauri, the first to reach Earth would be the
A) radio signal. B) light signal. C) both the same time