Physics only! - Not Double Science.

1. The Sun produces energy through....

  • A. chemical reactions
  • B. nuclear fission reactions
  • C. nuclear fusion reactions
  • D. gravitational collapse producing heat

2. Radiation from the Sun is mainly in which regions of the E.M. spectrum?

  • A. microwave, infrared and visible
  • B. infrared, visible and ultraviolet
  • C. visible, ultraviolet and X-rays
  • D. infrared, ultraviolet and X-rays
3. The Sun is currently in the 'main sequence of its evolution'. What will happen to the Sun immediately after it evolves beyond this stage? Sun image
  • A. It will become a black hole.
  • B. It will become a red giant.
  • C. It will become a white dwarf.
  • D. It will become a black hole.

4. Very large stars will eventually expand and explode. This explosion is called...

  • A). a supernova.
  • B). a quasar.
  • C). a neutron star.
  • D). a solar flare.

5. Which of these are possible final stages for a massive star, with a mass much larger than the Sun?

  • A). White dwarf or black hole.
  • B). Neutron star or planet.
  • C). Neutron star or black hole.
  • D). White dwarf or planet.

6. In billions of years time, the Sun will no longer have the elements required for fusion reactions and will be a very small and dense object, but still very hot.

What is this stage called?

  • A. A nebula.
  • B. A neutron star.
  • C. A supernova.
  • D. A white dwarf.

7-10. The paragraph below describes the evidence for the 'Big bang'.

What are the missing words/phrases?

Astronomers have found that for measurements taken on
light from distant galaxies, there has been an increase
in the of light .
This is called the . This evidence leads us to
believe that the universe is .
Astronomers now believe the universe had a clear beginning,
called 'the Big Bang'.
At the beginning, the universe was in a very state,
and then, over time, expanded to the huge size we see today.