The Sun is a star positioned at the center of our Solar System.
State the name of the force that keeps the planets in orbit around the Sun.
State what is meant by the term galaxy.
State the meaning of the term redshift.
Describe how observations of redshift of light from distant galaxies provide evidence that the Universe is expanding.
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.