Sound & Light Review

When light travels from outer space to a gas (our atmosphere) what will happen?

• It will speed up
• It will reflect
• It will slow down 

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

To make a sound from a stringed instrument louder you must

• hit it
• pluck it harder
• hold it higher
• pluck it softer

The term for any wave that hits a surface and bounces off

• Transparent
• Translucent
• Refraction
• Reflection

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

• louder
• softer
• higher
• lower

The highest pitch is made by the _______ instrument.

• biggest
• wooden
• smallest
• shiniest

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

An object that does not vibrate cannot produce

• sound
• light
• heat
• electricity

A material through which objects can't be seen.

• Opaque
• Transparent
• Translucent
• Transverse

What is volume?

• how high or low a sound is
• the loudness or softness of a sound
• the number of vibrations per second
• vibrations