Sound and Light

What is refraction?

• when light bounces off an object
• when light bends
• when light draws an object

How does sound travel?

• in only one direction
• in waves
• it doesn't travel

Pitch is __________________.

• how loud or soft a sound is
• how high or low a sound is
• when sound comes back to you

The longer the string on an instrument, the _________ the pitch.

• lower
• higher
• softer

What causes sound?

• when the pitch is high
• when something vibrates
• when the volume is loud

If I play a long string on a harp, it will probably have a __________ pitch.

• echo
• low
• high
• loud

My vocal cords ___________ when air passes through them.  This allows me to speak.

• stop
• vibrate
• close
• open

The highest pitch is made by the _______ instrument.

• biggest
• wooden
• smallest
• shiniest

What does it mean to reflect?

• bounce off
• bend
• refract
• energy

What does it mean to refract?

• bounce off
• to bend
• curve outward
• reflect