Understanding Wavefronts and Interference

What is a wavefront in the context of wave movement?

• A set of locations where the wave is at the same phase

• The highest point of a wave

• The lowest point of a wave

• A point where the wave starts

How is the distance between two lines on a wavefront related to wavelength?

• It is half the wavelength

• It is twice the wavelength

• It is equal to one wavelength

• It is unrelated to wavelength

When drawing wavefronts, what do the lines represent?

• The amplitude of the wave

• The speed of the wave

• The direction of the wave

• The crests or troughs of the wave

How can wavefronts differ in shape?

• They are always irregular

• They are always straight

• They can be straight or circular depending on wave movement

• They can only be circular

What occurs when two waves are perfectly in phase?

• Destructive interference

• Constructive interference

• No interference

• Phase shift

What happens during destructive interference?

• Waves pass through each other unchanged

• Waves cancel each other out

• Waves amplify each other

• Waves change direction

In the context of wavefronts, what does constructive interference result in?

• No change in wave size

• Wave direction change

• Smaller wave crests

• Larger wave crests

What is observed when two rocks are dropped into a pond at different points?

• Only one wave is formed

• Waves disappear immediately

• Waves move in one direction

• Waves expand and interact, showing interference patterns

Where does constructive interference occur in a pond with two expanding waves?

• Where waves are at different phases

• Where waves are far apart

• Where two wavefronts overlap

• Where waves do not overlap

What is indicated by a green dot in the interference pattern of waves?

• No interference

• Wave reflection

• Destructive interference

• Constructive interference