Physics

Question 1

What is a quantity?

Answer 1

Something you measure

Question 2

Mass = ?

Answer 2

Grams/kilograms/milligrams

Question 3

Current = ?

Answer 3

Amps

Question 4

Force = ?

Answer 4

Newtons

Question 5

Speed = ?

Answer 5

m/s

Measurement/seconds

Question 6

Acceleration = ?

Answer 6

ms-1

Question 7

Time = ?

Answer 7

Seconds, minutes, hours, days

Question 8

Energy = ?

Answer 8

J or joules

Question 9

Height = ?

Answer 9

Metres, cm, mm, ft

Question 10

Definition of peak

Answer 10

Highest point of the wave

Question 11

Definition of trough

Answer 11

Lowest point of the wave

Question 12

Definition of frequency

Answer 12

The number of waves passing a point per second

Question 13

Frequency units

Answer 13

Hz

Question 14

Definition of amplitude

Answer 14

The maximum displacement (highest of a wave)

Question 15

Amplitude units

Answer 15

A

Question 16

Definition of wavelength

Answer 16

The distance from peak to peak (or from

trough to trough)

Question 17

Definition of time period

Answer 17

The time it takes one wave to pass a point

Question 18

Time period units

Answer 18

s

Question 19

Name four properties of electromagnets waves

Answer 19

Light travels in a vacuum
Light travels as fast as in a vacuum
Particles, they don’t need them
Transverse wave

Question 20

Name the electromagnetic spectrum in order

Answer 20

Radio waves 
Microwaves 
Infrared 
Visible light 
Ultraviolet 
X-rays 
Gamma rays

Question 21

Name three ways a wave can interact with matter

Answer 21

Reflection
Absorption
Transmitted

Question 22

What is the use for gamma rays?

Answer 22

It treats cancer

Question 23

What is the dangers of gamma rays?

Answer 23

It kills cells

Question 24

What is the use for x rays?

Answer 24

Medicine

Question 25

What are the dangers of x rays?

Answer 25

``` Vomiting Bleeding Fainting Hair loss Loss skin ```

Question 26

What is the use for visible light?

Answer 26

Illumination | Photography

Question 27

What are the dangers of visible light?

Answer 27

None

Question 28

What is the use for infrared?

Answer 28

Security systems Remote controls Cameras

Question 29

What are the dangers of infrared?

Answer 29

Skin burns

Question 30

What is the use for microwaves?

Answer 30

Wireless networks Satellites Cancer treatment Radars

Question 31

What are the dangers of microwaves?

Answer 31

Internal heating of cells

Question 32

What is the use for radio waves?

Answer 32

Communication Broadcasting Computer networks

Question 33

What are the dangers of radio waves

Answer 33

None