Sound

An ________ is a reflected sound.

• Vibration
• Echo
• Pitch
• Volume

Sound is a form of energy produced by ______________.

• Vibrations

• Distances

• Prisms

• Forces

Sound waves travel the FASTEST through _____________.

• Gases

• Liquids

• Solids

An object that does not vibrate cannot produce

• Sound

• Light

• Heat

• Electricity

A place where no sound exists is...

• in the air.

• under water.

• space.

• all of the above

Why do we see lightning before we hear the thunder?

• Our eyes trick us.

• Light travels faster than sound.

• they're two separate things.

When people speak their ________ vibrate.

• Ear drums

• Vocal chords

• Ears

• Tongue

What is Pitch?

• How loud or soft a sound is.

• Muscle that holds vocal cords.

• Movement back and forth.

• How high or low a sound is.

Which device measures sound waves?

• Oscilloscope

• Stethoscope

• Radio

• None of the above

A sound with a high frequency has a _____ pitch. A sound with a ____ frequency has a low pitch.

• high, low

• low, high

• medium, high

• high, medium