In 1908, a massive aerial explosion occurred near the Tunguska River in Siberia. The sound of the blast was so loud that it was heard up to 1000 km away.
Which statement about the sound from this explosion is not correct?
An astronaut inside an orbital station in space (a vacuum) at an altitude of 400 km400\text{ km}400 km directly above the site could hear the sound of the blast.
The sound took more than 45 minutes to reach observers located 1000 km1000\text{ km}1000 km away.
The amplitude of the pressure waves decreased as the sound traveled further from the source of the explosion.
The sound was extremely loud because a very large amount of energy was transferred to the vibrations of the surrounding air molecules.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.