P1 TEMP - Radiation & Waves

Question 1

A wave is a _________ repeating ___________ or movement that transfers ________ through a medium or ___________.

Answer 1

regular, disturbance, energy, vacuum

Question 2

When a wave travels through a medium, the ________ of the medium _______ and transfer _______ between each other. BUT Overall the particles ______ in the same place,

Answer 2

particles, vibrate, energy, stay

Question 3

________________ - ___________ from the ________ _______________ to a ____ or trough

Answer 3

Amplitude, displacement, rest postion,crest

Question 4

_______________ - Highest ________ of a wave

Answer 4

Crest, point

Question 5

_________________ - Lowest _________ of a wave

Answer 5

Trough, point

Question 6

_________________ - Distance between two ___________ _________ on two ____________ cycles of a wave

Answer 6

Wavelength, identical points, adjacent

Question 7

Frequency is measured in ______ (__)

Answer 7

Hertz (Hz)

Question 8

______________ - The number of ____________ __________ passing a certain point ___ ___________

Answer 8

Frequency, complete waves, per second

Question 9

________________ - The amount of ________ it takes for ___ _________ of a wave to _____ a certain point

Answer 9

Period, time, one cycle, pass

Question 10

Period = 1/_____________

Answer 10

frequency

Question 11

Most waves are ______ waves. Examples include EM waves and _______ waves

Answer 11

transverse, water

Question 12

______________ __________ - Waves in which the ______________ is ____________________ to the direction of energy transfer

Answer 12

Transverse waves, oscillations, perpendicular

Question 13

________________________ ________ - Waves in which the _________________ are ___________ to the direction of energy transfer

Answer 13

Longitudinal Waves, oscillations, parallel

Question 14

The larger the wavelength the _____ the frequency and ______

Answer 14

lower, energy

Question 15

Examples of Longitudinal waves include _______ waves and _ waves

Answer 15

sound, P

Question 16

Wavespeed (___) = _______________ (Hz) x _____________________ (___)

Answer 16

m/s, frequency, wavelength (m)

Question 17

The shorter the wavelength the ___________ the _____________ and energy

Answer 17

higher, frequency

Question 18

All waves in the EM spectrum travel at the speed of ______ (________________________)

Answer 18

light, 300,000,000m/s

Question 19

Longitudinal waves shows areas of ________ and _______

Answer 19

Compression, rarefraction

Question 20

Compression are areas of ______ pressure due to particles being _____ together

Answer 20

high, close

Question 21

Rarefactions are areas of _____ pressure due to particles being ______ _____

Answer 21

low, further apart

Question 22

Longitudinal waves can be demonstrated by ______ and _______ a spring

Answer 22

pushing, pulling

Question 23

For example, if you push a spring left and right, the compressions will move ____ and _____ as well as _____ is being transferred from ____ to ______.

The particles don’t ____, instead they ______ left and right as the wave is ________ through the spring

Answer 23

left, right, energy, left, right

move, oscillate, transmitted

Question 24

Transverse waves can often be demonstrated by ______ a rope rapidly __ and ____

Answer 24

moving, up, down

Question 25

For example, when you move a rope __ and ____, _____ is transferred from ____ to _____ BUT the _________ _______ ___ and ______ as the wave is being _________

Answer 25

up, down, energy, left, right, particles oscillate up & down, transmitted

Question 26

The law of reflection states that - Angle of _______ _ Angle of ________

Answer 26

Incidence = Reflection

Question 27

The normal line is an imaginary ___ which is ___________ to the _______

Answer 27

line, perpendicular, surface

Question 28

Refraction is when the wave changes _______ and ___________ when being transmitted through different ______ of _______

Answer 28

speed, direction, densities, mediums

Question 29

In general, the _____ the transparent material, the more _____ light travels through it

Answer 29

denser, slower

Question 30

Glass is _____ than air, so a light ray passing from air to glass would _____ ____ and the ray would bend ______ the normal line.

Answer 30

denser, slow down, towards

Question 31

A light ray ______ up when as it passes from glass to air, and bends ____ from the normal

Answer 31

speeds, away

Question 32

For a _____ frequency of light, the ________ is _______ to the _____ ______

Answer 32

given, wavelength, proportional , wave speed

Question 33

If a wave slows down, it's wavelength will _______

Answer 33

decrease

Question 34

For example, when a wave goes from air to water, it slows down and its _______ decreases, although the ________ remains the ______

Answer 34

wavelength, frequency, same

Question 35

All electromagnetic waves are ______ waves Transfer energy from a ______ to an _______ All travel at _____________ through a vacuum

Answer 35

Transverse Source, absorber 300,000,000 m/s

Question 36

The electromagnetic consists of _ distinct groups these are.... ______ waves, Microwaves ______ , ________ ____, Ultraviolet/ UV, _ - ___, Gamma rays

Answer 36

Radio, Infrared, Visible light, X-Rays

Question 37

Radio waves have the ______ wavelength in the EM spectrum whilst Gamma rays have the _______ wavelength in the EM spectrum

Answer 37

longest, shortest

Question 38

Waves with long wavelengths have ___ frequency and ____ energy in the EM spectrum. Waves with short wavelengths have ___ frequency and ____ energy in the EM spectrum

Answer 38

low, low high, high

Question 39

Each group in the EM spectrum has a limited ____ of ________

Answer 39

range, frequency

Question 40

In visible light, ___ light has the lowest frequency whilst _____ light has the highest frequency

Answer 40

red, violet

Question 41

Radio waves are used for ___________. This is because they are _____ ________ through air, can be _______ or ________ to change their ______ and cause __ ____ to the human body

Answer 41

Communications, easily transmitted reflected, refracted, direction no harm

Question 42

Microwaves are used for _______ and _________ Microwaves have ______ which are easily _______ by _________ in the food, which causes ________. Microwaves do not _______ in the atmosphere, so they can be used for communications between earth and ______ .

Answer 42

Cooking, communications frequencies, absorbed, molecules, heating refract, space

Question 43

Infrared radiation is used for _______ and detecting ____ _____. Internal _____ of ____ ______when ________ infrared, which causes _________. All objects emit _____ radiation. This is useful as infrared radiation can detect ______ in the ____, help firefighters find ___ spots and more.

Answer 43

heating, heat sources energy, bonds, increases, absorbing, heating infrared, people, dark, hot

Question 44

Visible light is used for _____ - _____ communications. This is where coded _____ of ______ travel through _____ fibres from a _____ to a _______.

Answer 44

Fibre-optic pulses, light, glass, source, receiver

Question 45

UV radiation ____ bacteria in _____ to _____ it and make it safe to ______. Also helps the skin by production of ________ _ Oxygen absorbs UV to become ______ gas. ________ absorbs some UV, which protects ______ on Earth from being exposed to dangerously ____ levels and its _______ effects

Answer 45

kills, water, sterilise, drink Vitamin D Ozone, ozone, organisms, high, harmful

Question 46

High energy __, _-____ and ________ rays are types of _________ radiation

Answer 46

UV, X-Rays, Gamma, Ionising

Question 47

Ionising radiation can be _________. Ionisation causes _______ to be _______ ___ the shells of atoms, turning them into _____. This can lead to ________ in cells which can lead to ________.

Answer 47

Dangerous Electrons, knocked off, ions, mutations, cancer

Question 48

UV radiation waves can cause ___ ________.

Answer 48

Skin cancer

Question 49

Gamma rays can _______ or ____ cells in a person's body

Answer 49

damage, kill

Question 50

Exposure to ________ radiation needs to be kept ____, especially those working with them frequently. For example, a radiographer can stand in ______ ____ or behind a _____ when _______ X-Rays

Answer 50

ionising, low another room, screen, conducting

Question 51

Infrared radiation can be used for ______ imaging to produce a ________. This helps doctors ________ patients as areas of the body that emit ____ heat may be _______ or ___________

Answer 51

thermal, thermogram, diagnose, more, infected, injured

Question 52

X-Rays can produce images of the _______ which helps doctors find _______ to ______. This is because X-Rays are ______ by ______ material, but _____ through soft tissue. Once passing the body they ______ a ________ film showing the results

Answer 52

skeleton, damage, bones absorbed, denser, pass, darken, photographic

Question 53

Gamma rays are emitted from the _______ of atoms. They have ____ energy so they can kill ______ cells and __________ in food.

Answer 53

nuclei high, cancer, bacteria