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| Question | Answer |
| What type of wave travels at right angles to the energy transfer? Transverse Longitudinal Sound | Transverse wave travels at right angles to the energy transfer. Light is a transverse wave. |
| What type of waves are light and the other forms of electromagnetic radiation? Longitudinal P waves Transverse | Light and the other forms of electromagnetic radiation are transverse waves. |
| What type of wave has areas of rarefaction and compression? Transverse Light Longitudinal | Longitudinal waves have areas of rarefaction and compression. |
| What are the two types of seismic wave? S and T waves P and S waves T and L waves | The two types of seismic waves are P & S. These stand for primary and secondary waves. |
| What layer is below the crust? The mantle The atmosphere The outer core | The mantle is below the crust. It has the properties of a solid but can flow. |
| What part of the Earth is made from nickel and iron? The crust The core The mantle | The core is made from nickel and iron. It causes our magnetic field. |
| Which type of seismic wave can travel through solids only? S wave P wave S and P wave | Seismic S waves can only travel through solids. |
| What happens to S waves when they reach the boundaries of the Earth's structure? The reflect only They reflect and refract They refract only | When S waves reach the boundaries of the Earth's structure they both reflect and refract and these change from one state to another. |
| What is the centre of an earthquake called? Triangulation Seismometer Epicentre | The centre of an earthquake is called an epicentre. This is usually where the most damage occurs. |
| Which type of seismic wave travels the fastest? They travel at the same speed S waves P waves | P waves travel much faster than S waves. They can also travel in solids and liquids. |
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