P1

Question 1

What is amplitude

Answer 1

The displacement between the rest postion and crest or trough

Question 2

What is the displacement between crest and rest prosition

Answer 2

Amplitude

Question 3

What is the function of a wave

Answer 3

They tranfer energy from one place to another without transmitting mass

Question 4

What transfers energy without matter

Answer 4

Waves

Question 5

Describe whats happens when a wave travels through a medium

Answer 5

The particels of the medium vibrate and transfer energy but overall the stay in the same place

Question 6

What is the wavelength

Answer 6

It is the distence between two adjacent disturbances (crest to crest or compression to compression)

Question 7

What is the frequency

Answer 7

Its the number of complete waves made by a souce passing a certain point per second

Question 8

What are transverse waves

Answer 8

They are waves with perpendicular disturbances

Question 9

What are longitudinal waves

Answer 9

They waves with parallel distribances

Question 10

What wave has parallel disturbances

Answer 10

Longitudinal waves

Question 11

What waves have perpendicular disterbances

Answer 11

Transverse waves

Question 12

What is the waves speed equation in words not in symbols

Answer 12

Wave speed = frequency x wavelength

Question 13

Equation in symbols

Answer 13

m/s = Hz x m

Question 14

Equation in symbols

Answer 14

m/s = Hz x m

Question 15

What happens when longitudinal waves pass through a medium

Answer 15

They squash up and strech out

Question 16

What do you use to mesure sound

Answer 16

Oscilloscope

Question 17

What happens to a wave at a boundary

Answer 17

The wave can ether be absorbed(transferred), transmitted(keeps on traveling) and reflected(sent back)

Question 18

What is refraction

Answer 18

Waves changing direction at the boundary or a different way

Question 19

What are the 7 EM waves on the spectrum

Answer 19

Radio, micro, infrared, visable, uv, x-rays, gamma waves (rock music is very useful for experimenting on goats)

Question 20

What can happen when’s when changes occur in nuclei atoms or molecules

Answer 20

EM waves or EM radiation can be released

Question 21

What happens with changes in the nuclei

Answer 21

Gamma rays are emitted (radioactive decay)

Question 22

What happens when electrons drop down energy levels

Answer 22

Visible light and uv light are emitted

Question 23

What happens when two bonds holding the atoms together vibrate

Answer 23

Generates inferred reaction

Question 24

What happens when EM waves are absorbed

Answer 24

It creases to exist and causes heating

Question 25

What happens when high energy uv, x-rays and gamma rays are absorbed

Answer 25

They causes heating and ionisation when absorbed by atoms

Question 26

What happens when inferred radiation is absorbed

Answer 26

Molecules absorb it as well as emitting it

Question 27

What happens when UV radiation is emitted from the sun

Answer 27

It is aborbed by oxygen molecules forming the ozone protecting living things from damaging effects

Question 28

what waves are oscillating electric and magnetic fields

Answer 28

radio and all EM waves

Question 29

what is a EM wave

Answer 29

Alternating currents in electrical circuits cause charges to oscillate this creates an oscillating electric and magnetic field

Question 30

what can gamma rays be used for in the hospital?

Answer 30

sterilising hospital equipment

Question 31

how do x-rays work in the human body

Answer 31

they scan the body and pick up the denser materials then the rays bounce back and transmit onto the machine

Question 32

what are concave lenses

Answer 32

they are a lens that caves inwards and causes parallel rays of light to spread out

Question 33

what are convex lenses

Answer 33

they are lens the bulges outwards causing the parallel rays of light of light to converge