Sound

Sound travels FASTEST through which of these materials?

• Wood

• Water

• Metal

• Air

What is volume?

• the loudness or softness of a sound

• the amount of space an object occupies

• the speed of sound in air

• the frequency of a sound wave

A longer string makes a _______ pitch than a short string.

• higher

• lower

• medium

• constant

What is vibration?

• the back and forth movement of matter

• a continuous sound wave

• the static position of an object

• the random motion of particles

Why is the school library covered with carpet?

• to help absorb sounds to keep it quiet

• to make it look more attractive

• to provide a comfortable seating area

• to prevent dust accumulation

Sound is caused by?

• vibrations

• light waves

• magnetic fields

• static electricity

What is frequency?

• the number of vibrations per second

• the speed of sound in air

• the amplitude of a wave

• the wavelength of light

The highest pitch is made by the _______ instrument.

• largest

• smallest

• heaviest

• lightest

Sound is a form of?

• energy

• matter

• force

• light

Sound does not travel in space because

• There is no matter in space.

• Sound needs a medium to travel.

• Space is too cold for sound to travel.

• Sound is absorbed by the vacuum of space.