Question

a sound wave moves through air by causing air particles to:
move in circles
stay still while energy moves past
vibrate back and forth
move up and down
2 multiple choice 1 point
ocean waves and sound waves are similar because both:
reflect energy only at the shore
do not require a medium to move
can travel through empty space
transfer energy through a medium

Explanation:

• For the first question: Sound waves are longitudinal waves. In a longitudinal wave, the particles of the medium (in this case, air particles) vibrate back - and - forth parallel to the direction of wave propagation.
• For the second question:
• Ocean waves are mechanical waves that transfer energy through water (a medium). Sound waves are also mechanical waves that transfer energy through a medium (such as air, water, or solids).
• Option 1: Ocean waves reflect energy in many places (not just at the shore), and this is not a general similarity between ocean and sound waves.
• Option 2: Both ocean and sound waves require a medium. For example, sound cannot travel in a vacuum.
• Option 3: As mentioned, they need a medium, so they cannot travel through empty space.
• Option 4: This is correct as both are mechanical waves that transfer energy through a medium.

Answer:

1. Vibrate back and forth
2. Transfer energy through a medium