Skip to content

Course home

Sign up

6.2 Stars and the Universe

EasyMedium
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576
Question 58

Which statement correctly describes the balance of forces in a stable, main-sequence star?

A

The outward force of gravity is balanced by the inward gas and radiation pressure.

B

The inward force of gravity is balanced by the outward pressure resulting from high temperatures and nuclear fusion.

C

The star expands continuously because the outward pressure exceeds the inward gravitational force.

D

The star contracts continuously because the inward gravitational force is much greater than the outward pressure.

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.

Question bank