One spring has a single isolated bump. Another has a repeating row of neighbouring peaks. Which lets you measure a wavelength from peak to next peak?

• Only the isolated bump
• Only the repeating pattern
• Both patterns in the same way
• Neither of these patterns

What does the amplitude of an up-and-down rope wave measure?

• Movement from rest to a peak
• Distance between neighbouring peaks
• Distance travelled in one second

For otherwise comparable waves on the same rope at the same shaking rate and tension, a larger amplitude carries more energy.

Kai measures straight along a repeating rope wave from one peak to the next peak. Which measurement is he finding?

• The wave's amplitude
• The wave's wavelength
• The wave's travel speed

Mia wants to compare how amplitude affects energy on a rope. Which plan changes amplitude while keeping the other conditions the same?

• Change the rope and its tension together
• Change the shaking rate and the rope together
• Change the tension and shaking rate together
• Change hand movement but keep rope, tension and rate

Use the simplified water-wave model with no current or drift. A floating cork follows the surface as large-amplitude waves pass. What mainly happens?

• It bobs up and down
• It stays at one height
• It travels with each peak

These bars measure amplitudes of otherwise comparable waves on the same rope at the same shaking rate and tension. Which carries more energy?

• Wave A
• Wave B
• Equal energy

Knowing only the amplitudes tells you which waves carry more energy, whatever their materials and setups.

Wave X has neighbouring peaks 2 cm apart. Wave Y has neighbouring peaks 5 cm apart. Which has the longer wavelength?

• Wave X
• Wave Y
• Equal wavelengths

Three consecutive peaks of a repeating wave are at 1 cm, 7 cm and 13 cm along a ruler. What is one wavelength in cm?