Physics revision

Question 1

What two types of waves are there

Answer 1

Transversal longitudinal

Question 2

What is the equation for distance

Answer 2

Distance=speed of sound x time

Question 3

Transversal

Answer 3

Water waves and electro magnet waves

Question 4

What is the speed of sound in air

Answer 4

340 m/s

Question 5

Longitudinal

Answer 5

Sound wave

Question 6

An echo is a

Answer 6

Sound reflection

Question 7

Transverse waves occure when

Answer 7

oscillations are perpendicular or at right angles (90°) to the direction of travel.

Question 8

Longitudinal waves are

Answer 8

oscillations which occur parallel to the direction of travel.

Question 9

What does sound need to travel through

Answer 9

A medium

Question 10

The speed of sound in gas is

Answer 10

Very slow

Question 11

The more rigid a medeum is the

Answer 11

Higher the speed of sound travelling through it

Question 12

The more compressible a medium

Answer 12

The lower the speed of sound travelling through it

Question 13

Solids are

Answer 13

Rigid

Question 14

Gases are

Answer 14

Compressable

Question 15

Liquids are

Answer 15

More rigid and less compressable then gases (in the middle)

Question 16

What do we call a sound wave which has reflected off a wall?

Answer 16

Echo

Question 17

What is frequency

Answer 17

The number of sound waves that happen in one second

Question 18

What is frequency measures in

Answer 18

Hertz

Question 19

A high pitched sound means

Answer 19

The particles of vibrating very quickly

Question 20

Sounds above 20,000 HZ it’s called

Answer 20

Ultrasound

Question 21

Sound below 20 HZ is called

Answer 21

Intrasound

Question 22

Frequency effect sounds

Answer 22

Pitch

Question 23

Light travels as

Answer 23

Transverse waves

Question 24

can light travel in a vacuum

Answer 24

Yes

Question 25

Objects that do not allow light to transmit through them are called

Answer 25

opaque

Question 26

Objects that look light through them are called

Answer 26

Transparent

Question 27

Objects that scater light are called

Answer 27

Translucent

Question 28

When does light change speed?

Answer 28

When it passes through different medium or substances

Question 29

When light changes speed what is it known as?

Answer 29

A refraction ray

Question 30

Which colour has the lowest frequency?

Answer 30

Red

Question 31

What is a red object doing?

Answer 31

Reflecting red and absorbing all the other colours

Question 32

Is white light reflecting all colours or absorbing or colours?

Answer 32

Reflecting.

Question 33

When something is pitch black, it means it is.

Answer 33

Absorbing All colours

Question 34

Independent variable is the variable

Answer 34

You change in an experement

Question 35

The dependent variable is the variable that is

Answer 35

measured in an experiment.

Question 36

Control variables are the variables that are

Answer 36

kept the same in an experiment. Control variables help you to measure

Question 37

What’s the difference between continuosand discrete data

Answer 37

Continuous is measured and discrete is counted

Question 38

Draw line graphs when data is

Answer 38

Continuous/is measured