µ GCSE | The Universe

10 quick questions - for GCSE or iGCSE

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10 minutes maximum!

(can you do it in 5?)

Physics only! - Not Double Science.

1. What is the 'Milky Way"?

  • A. A solar system.
  • B. A nebula (dust cloud).
  • C. A white dwarf.
  • D. A galaxy.

2. The Sun is in the centre of our Solar system. The Sun is a...

  • A. hot planet.
  • B. white dwarf.
  • C. moon.
  • D. star.

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?

  • A. It willl become a black hole.
  • B. It willl become a red giant.
  • C. It willl become a white dwarf.
  • D. It willl become a supernova.

4. 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.

5. Most stars visible in the sky are stable. The inwards forces balance the outward forces. Which answer below best describes what causes these forces?

 
Inwards force Outward force
A
Gravity Pressure from heat caused by fusion.
B
Pressure from inwards radioactivity. Pressure from heat caused by fusion.
C
Gravity Pressure from combustion of fuels.
D
Collapse as light elements form heavier, more dense ones. Pressure from combustion of fuels.

 

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 begnning, the universe was in a very state,
and then, over time, expanded to the huge size we see today.