Properties of a Standing Wave

Which of these are true?

• Travelling waves transfer energy in the direction of their propagation

• Travelling waves rarely transfer energy in the direction of their propagation

• Standing waves have an interchange of potential and kinetic energy within the wave

• Standing waves have a net transfer of energy

Which statements below are correct about the amplitude?

• In a travelling wave, all particles have different amplitudes

• In travelling wave, all particles have the same amplitude

• At the antinode of a stationary wave, a particle has maximum amplitude

• At the node of a standing wave, a particle has zero amplitude

Which of the statements below are correct?

• Particles between two adjacent nodes are all out of phase.

• Particles between two adjacent nodes are all in phase.

• Within a wavelength of a travelling wave, particles have different phases.

• Within half a wavelength of a travelling wave, particles are in phase.

In a travelling wave

• all particles vibrate with different frequencies

• all particles vibrate with the same frequency

• particles at the node are stationary

• particles at the antinode vibrate at higher frequencies

Wavelength is

• twice the distance between two adjacent nodes (or antinodes) in a stationary wave

• the distance between two adjacent particles of a progressive wave that are in phase.

• the distance between two adjacent nodes (or antinodes) in a standing wave

• the distance between two crests of a travelling wave

A standing wave

• stays in the same overall position

• is sometimes called a stationary wave

• Is formed from two travelling waves moving in opposite directions

• Is a result of the wave superposition principle