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6.2 Stars and the Universe

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Question 1
a.

State the three regions of the electromagnetic spectrum that have wavelengths longer than visible light.

  1. ____________________________

  2. ____________________________

  3. ____________________________

[3]
b.

Electromagnetic radiation from a star travels through space at a speed of 3.0×108textm/s3.0 \times 10^8\\text{ m/s}3.0×108textm/s. The radiation takes 750texts750\\text{ s}750texts to reach an orbiting planet.

Calculate the distance from the star to the planet.

[2]
c.

Stars form from interstellar clouds of gas and dust.

Describe how gravitational forces and temperature changes lead to the formation of a protostar from a nebula.

[3]
d.

Explain how a protostar transitions into a stable main-sequence star, and how the forces within this star are balanced.

[3]
Markscheme

6.2 Stars and the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2 Stars and the Universe

104 exam-style questions on CIE IGCSE Physics 6.2 Stars and the Universe, covering 6.2.1 The Sun as a star, 6.2.2a Galaxies and astronomical distances, 6.2.2b The life cycle of a star, 6.2.3a Galaxies and the scale of the Universe, 6.2.3b Redshift, 6.2.3c The Big Bang Theory and cosmic microwave background radiation, and 6.2.3d The Hubble constant and the age of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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