Which of the following scenarios would result in sound being produced?

• Taking a nap
• Sharpening your pencil
• Looking out a window
• Thinking about your homework

Which of the following scenarios shows an increase in volume?

• Plucking a rubber band, tightening it, and then plucking the rubber band again
• Plucking different strings on a guitar
• Turning a radio up louder to hear your favorite song
• Singing a song that contains high and low notes

__________________________ is the back-and-forth motion of an object.

• vibration
• sound wave
• frequency
• amplitude

_____________________________ is an area of particles that moves outward in all directions from a vibrating object.

• frequency
• sound wave
• pitch
• intensity

______________________________ is the highness or lowness of a sound as determined by its vibration.

• vibration
• sound wave
• volume
• pitch

__________________________ is the number of times a sound wave vibrates in a given time.

• intensity
• frequency
• vibration
• amplitude

__________________________ is the distance from the top of one wave to the top of the next wave.

• frequency
• pitch
• wavelength
• crest

_____________________________ is the strength of a form of energy.

• wavelength
• intensity
• vibration
• sound wave

Sound will travel fastest through which of the following forms of matter?

• water
• air
• wall
• coffee

Sound will travel slowest through which of the following forms of matter?

• milk
• desk
• air
• door