Sound

Sound is........

• A form of energy

• Electric

• Music instrument

• lightning

We need sound to hear and to...

• sing

• sleep

• speak

• run

The boom from a plane taking off is......................sound

We can produce the sound by....

• pluck the string of guitar

• shaking potato bag

• hit the box

• bounce the light into our eyes

Why the sound of thunder after the light?

Sound is caused by....

• molecules
• vibrations
• people
• space

how high or low a sound is

• frequency
• volume
• vibration
• pitch