Sound Lesson Exam Review

How is sound produced?

• When an object vibrates, it creates a breeze or a wind, which makes waves.

• When an object vibrates, it generates electricity, which powers a sound system.

• When an object vibrates, its back-and-forth motion creates sound waves.

• When an object vibrates, it sets off an alarm, which rings and makes a sound.

When you go to a concert, how do earplugs protect your hearing?

• They help increase the volume of the music

• They help block out most of the sound

• They help lower the pitch of the music

• They help raise the pitch of the music

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What is one way in which sound and light are alike?

• They both can travel through outer space

• They both travel easily through wood

• They both make it easier for you to see what you are doing

• They are both types of energy

Sound waves all have a specific ________. (Select all that apply)

• amplitude

• frequency

• wavelength

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What does a sound wave's frequency tell you?

• the loudness or softness of the sound from an object

• the type of medium in which the sound is traveling

• the amplitude of the sound waves

• the number of vibrations per second an object is making

What does a sound wave's frequency determine?

• amplitude

• wave speed

• loudness

• pitch

Which characteristic of a sound is affected by the amount of energy used to create that sound?

• how high or low the sound's pitch is

• how fast or slow the sound travels in a particular medium

• how loud or soft the sound is

• in what direction the sound will travel

Tags

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Why is there no sound in outer space?

• there are too many other noises

• there is only echolocation in space

• the speed of sound is too slow for space

• there is no medium in which it can travel

Why does sound travel faster through a steel bar than through a swimming pool filled with water?

• Steel is a denser medium than water.

• Water is a denser medium than steel

• Steel has a larger wavelength than water

• Water has a larger wavelength than steel

Tags

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How do bats determine where they are in relation to buildings and other objects?

• They use echolocation

• They use their eyes

• They use temperature

• They use air pressure

Tags

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