The distance between two consecutive crests of a wave is called the

Question

BlackTom AI · Accepted Answer

Wavelength (λ) is defined as the distance between two consecutive crests (or two consecutive troughs) of a wave, measured along the direction of propagation.

1) Relevant knowledge points and concepts
- Crest: the highest displacement point of a transverse wave. Trough: the lowest displacement point.
- Wavelength (λ): spatial period of the wave — distance between successive identical points (e.g., crest-to-crest).
- Frequency (f): number of cycles per second (units: Hz), not a distance.
- Wave speed (v): how fast the wave pattern travels (units: m/s). Related by v = f · λ.
- Amplitude: maximum displacement from the equilibrium position (height of crest above equilibrium), not a distance between crests.

2) Step-by-step reasoning
- The phrase “distance between two consecutive crests” asks for a spatial separation.
- Among the wave properties, wavelength is the quantity that measures spatial separation between repeating features (crests).
- Therefore the correct term is wavelength.

3) Calculations / intermediate illustration
- If two crests are 2.0 m apart, λ = 2.0 m.
- If frequency f = 5 Hz, then wave speed v = f · λ = 5 Hz × 2.0 m = 10 m/s.
(This shows wavelength is the distance used in spatial calculations.)

4) Why the correct answer is correct
- Wavelength by definition is the distance between consecutive identical points on a wave (commonly crest-to-crest or trough-to-trough), so it directly matches the wording in the question.

5) Why the other options are incorrect
- a. Frequency: measures cycles per second (temporal rate), not a physical distance.
- c. Wave speed: measures how fast the wave travels (distance per time), not the distance between crests.
- d. Amplitude: measures the height of a crest above equilibrium, not the distance between successive crests.

6) Conclusion
- The correct answer is b. wavelength. This matches the provided answer.

The distance between two consecutive crests of a wave is called theSingle choice

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