Any object that is warmer than its surroundings will
A) absorb heat.
B) emit radiation.
C) reflect heat.
D) become denser.
Answer: B
You might also like to view...
The Hubble Law is a relation between a galaxy's
a. mass and its luminosity. b. distance and its luminosity. c. mass and its recession velocity. d. distance and its recession velocity. e. mass and its diameter.
That the Moon has no magnetic field implies that
a. the Moon is spinning too slowly to produce a magnetic field. b. the interior of the Moon is too hot to produce a magnetic field. c. the crust of the Moon is so thick that the magnetic field cannot get out of the interior. d. the Moon's core contains little if any molten iron. e. the Moon is moving further from Earth.
Based on what the nebular theory tells us about the formation of our own solar system, what does the theory predict for the possibility of other planetary systems?
a. Planetary systems should be common. b. Other planetary systems should be identical to our own. c. Most stars should have one or two planets, but not more. d. Planetary systems should be very rare.
An atom is excited when one or more of its electrons
A) vibrates. B) is boosted into higher energy levels. C) undergoes a frequency change. D) becomes frantic.