These School Projects could be used as lesson starters, they are provided by Alan Yate who was formerly Head of Science at Chesterton Community College, Cambridge, UK. The answers to these KS3 projects can mainly be found in the Earth and Beyond section of Sun|trek.
KS3 – a sound crossword. More information on waves can be found in the Sun|trek sections Hot Solar Atmosphere: waves and Solar Surface and Below: Beneath the Surface . Questions | Answers