Sound

Question 0

What does the law of conservation of energy

Answer 0

Energy cannot be created or destroyed but may be converted from one to the next

Question 1

What is sound

Answer 1

Sound is a form of energy produced by vibrations

Question 2

What is the speed of sound in air

Answer 2

340m/s

Question 3

Does sound travel faster in solids or liquids

Answer 3

Solids

Question 4

Put these in order from fastest to slowest

Answer 4

Solids, liquids, gases

Question 5

Which is faster speed of sound or light

Answer 5

Light

Question 6

A flash of lightning was observed and exactly 6 seconds later a clap of the
Thunder was heard. How far away was the lightning

Answer 6

340X6=2040m=2.04km

Question 7

What is an echo

Answer 7

An echo is a reflection of a sound

Question 8

What is a disadvantage of echoes?

Answer 8

In halls sound can become distorted due to echoes

Question 9

What is an advantage of echoes

Answer 9

Ships can use echoes to find the depth of sea

Question 10

What is the energy that made the water bend in the experiment with the tuning fork

Answer 10

Kinetic

Question 11

What does sound need to travel through

Answer 11

Medium

Question 12

What can sound not travel through

Answer 12

A vacuum

Question 13

What is the unit of sound

Answer 13

Decibels

Question 14

How many decibels can damage your ears

Answer 14

> 85db

Question 15

What is an ultrasound

Answer 15

High pitched sound

Question 16

How do you find distance

Answer 16

Speed X Time

Question 17

How do you find time

Answer 17

Distance divided by speed

Question 18

How do you find speed

Answer 18

Distance divided by time

Question 19

What can use high pitched sound

Answer 19

Dog whistles

Question 20

Sound is always caused by something being made to____

Answer 20

Vibrate

Question 21

Sound needs a —— to travel through, it cannot pass through a ——

Answer 21

Medium, vacuum

Question 22

We see lightning before we hear thunder because ——– travels faster than —-

Answer 22

Light sound

Question 23

Sound travels faster through —- or —– than through a —-

Answer 23

Solid, liquid, gas

Question 24

What is the lowest sound you can hear

Answer 24

0 db the threshold of hearing

Question 25

Give an example of something over 100 db

Answer 25

Pain threshold