Astronomers have a fixed budget and want to study faint radio emissions at a wavelength that passes through the atmosphere. A ground telescope with a large collecting area can be built for the same cost as a smaller space telescope. Which choice is best supported by this information?
Choose space, because the atmosphere absorbs all radio waves from the source.
Choose space, because orbiting Earth greatly reduces the distance to the source.
Choose the ground, because more radiation can be collected within the budget.
Choose the ground, because radio waves travel faster through air than through space.
75 exam-style questions on Edexcel GCSE Physics 7.3 Stars, covering 7.3.1 Evolution of stars similar to the Sun, 7.3.2 Evolution of massive stars, and 7.3.3 Observing the Universe. Each one has a worked solution and a mark scheme showing where the marks go.