Author Question: The Sun's surface seethes and churns with a bubbling pattern. Why? A) We are seeing hot gas ... (Read 64 times)

savannahhooper · **on:** Jul 27, 2018

The Sun's surface seethes and churns with a bubbling pattern. Why?

A) We are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface.
B) The churning is an illusion created by varying radiation, as the gas on the Sun's surface is actually quite still.
C) The churning gas is being stirred up by the strong solar wind.
D) The Sun's surface is boiling.

Question 2

A white dwarf supernova event is very important to calibrating Hubble's Law. Why? Choose the best answer for the question.

A) It is a very luminous standard candle.
B) It is a very rare event.
C) It can only happen to white dwarfs.
D) The white dwarf supernova in a galaxy tells us how fast a galaxy is expanding away from us.