Far-ultraviolet rays have short wavelengths, low energies, and travel at the speed of sound.

Far-ultraviolet rays have short wavelengths, low energies, and travel at the speed of sound.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

We can find the masses and diameters of stars that are in eclipsing binary systems.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 3

The ____________________ theory describes pulsars as rotating neutron stars with strong magnetic fields that confine high-speed charged particles in two beams emanating from the magnetic poles of the neutron star.
 
  Fill in the blank(s) with correct word

Question 4

Earth's atmosphere is fully transparent only to visible and radio light.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 5

To observe a spectroscopic binary, we must be able to see both stars individually.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 6

A(n) ____________________ is a rapidly spinning neutron star that accelerates charged particles near the poles of its magnetic field.
 
  Fill in the blank(s) with correct word