If the change in wavelength is less than zero, then the radial velocity tells you that the star is ...

If the change in wavelength is less than zero, then the radial velocity tells you that the star is moving _______________ you.
 
  a. parallel to b. away from
  c. towards d. in circles around

Question 2

The Moon physically changes its shape throughout its orbit around the Earth giving us the phases of the Moon we see.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 3

Since an electron is so less massive than a proton, what is the approximate mass and charge of a neutral hydrogen atom?
 
  a. the mass of an electron, negative b. the mass of a proton, neutral
  c. the mass of a neutron, positive d. the mass of a proton and neutron, positive

Question 4

Astronomy is pseudoscience.
 
  a. True
  b. False
  Indicate whether the statement is true or false