reflecting the sound waves back toward the ground. This reflected sound back toward the surface makes the thunder sound louder and more intense. It can also echo longer as it bounces between air ...

Measuring the time taken for a sound wave to move from one point to another ... there is a flash of lightning and a student hears the thunder 5 seconds later. How far away is the thunderstorm?

making a shock wave – a huge vibration in the airthat we hear as thunder. We usually see lightning before we hear thunder. That’s because light and sound travel at different speeds.