CKLA Grade 3 Unit 5 What is Sound?

All sounds make

• a movement

• a vibration

• a song

What causes sound?

• A movement on something opaque

• Your lungs breathing in and out

• A back and forth motion called vibration

What two things are needed to create sound? (Pick two)

• a device to absorb the sound

• something to vibrate and create sound waves

• an opaque object to bounce off of

• a medium to carry the sound waves

Why can't sound travel through space?

• There is no medium to carry sound

• It is too dark

• It is too spacious to hear anything

• It moves too quickly

How long would it take sound to travel around earth?

• 30 days

• 365 days

• 33 hours

• 7 times every second

The ______ of a sound depends on the medium through which it's moving.

• pitch
• vibration
• speed
• sound

Sound travels fastest though ...

• liquids

• gas

• solids

Different lengths of sound waves create different ....

• pitch

• volume

• vibration

• sound

What is another word for the trachea?

• voice box

• windpipe

• larynx

• lungs

When you have shorter vocal cords you tend to speak with...

• a lower pitch

• more volume

• a higher pitch