Sound

Question 1

Name two ways to show that slund is produced by vibrations?

Answer 1

If you listen to music using speakers and touch the speakers
When you pluck the strings of a guitar the strongs vibrate

Question 2

How do you show that sound is a source of energy?

Answer 2

You get a retort stand, get a piece of string and attach it to a tennis ball, put speakers infront of it and the ball should swong when the speakers are on

Question 3

Hwo does sound travel?

Answer 3

When someone speaks the air molecules in the speakers mouth vibrate in the room and the air molecules and the listeners ears canal will vibrate against her eardrum

Question 4

What is medium?

Answer 4

Air, solid or liquids

Question 5

How do you prove that sound needs medium to travel?

Answer 5

You get a bell jar and out an alarm in it, then you put a vacuum pump in it.Turn the alarm on later turn the vacuum on the sound slowly gets quieter

Question 6

What is sound reflection?

Answer 6

Sound that hits off a smooth and hard surface like an echo

Question 7

What are ultrasounds?

Answer 7

A very high note or pitch that humans can’t hear

Question 8

What is sound measured in ?

Answer 8

Decibels

Question 9

How is sound produced?

Answer 9

Sound is produced when objects vibrate