The Universe contains billions of ......1......, each typically containing hundreds of billions of ......2...... .
Which words correctly complete gaps 1 and 2?
1: galaxies; 2: stars
1: stars; 2: galaxies
1: galaxies; 2: planets
1: planets; 2: stars
59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.