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What is represented by the blue lines?

• Trough
• Crest
• Wavelength
• Amplitude

What part is represented by the blue lines?

• Crest
• Resting Point
• Wavelength
• Amplitude

Which wave in the diagram has the greatest wavelength?

• 1
• 2
• 3
• 4

Why is there no sound in space, which is a vacuum?

• Sound waves require a medium to travel, and a vacuum has no medium

• Light waves cannot travel through a vacuum, but sound waves can.

• Sound waves travel faster in a vacuum than in air.

• Sound waves are absorbed by the vacuum, preventing them from reaching our ears.

What is represented by the letter 'x'?

• Crest

• Rarefaction

• Compression

• Wavelength

Which part of the wave is shown at letter E?

• amplitude

• Crest

• Trough

• Wavelength

What determines the loudness of a sound?

• The frequency of the sound waves.

• The speed of the sound waves.

• The wavelength of the sound waves.

• The amplitude of the sound waves.

When a tuning fork is struck, how do the particles of the fork move to produce sound?

• The particles of the tuning fork move in circular motion.

• The particles of the tuning fork move back and forth in a straight line.

• The particles of the tuning fork rotate around the fork’s axis.

• The particles of the tuning fork move in a random, chaotic manner.

What is the term used to describe the bouncing back of sound waves when they hit a surface?

• Refraction

• Absorption

• Diffraction

• Reflection

Which statement best describes longitudinal waves?

• Longitudinal waves cause particles to move perpendicular to the direction of wave propagation.

• Longitudinal waves only travel through solids and liquids.

• Longitudinal waves do not require a medium to travel.

• Longitudinal waves cause particles to move parallel to the direction of wave propagation.