If you’re studying for the higher tier exam, you will need to be familiar with calculations involving very large and very small numbers by using the ×10x or EXP button on your calculator. The equation ...

Wave speed is a measure of how quickly the wave travels from its source. Its value is the same as the distance covered by a wave in one second. Speed is measured in metres per second \(m\,s^{-1}\) and ...

Seismologists have just registered an earthquake in Seward, Alaska, that is big enough to produce a tsunami. The ocean depth is 4,000 meters. Use the wave speed formula to approximate the tsunami's ...