Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Physics > Light And The Em Spectrum > Flashcards

Light And The Em Spectrum Flashcards

(71 cards)

Start Studying
1
Q

What is the sclera

A

The white outer layer of the eyeball

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does the sclera do

A

Maintains the eyes shape and protects it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where is any image formed

A

The retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does the retina contain

A

Millions of tiny light sensitive cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the light sensitive cells called

A

Comes and rods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does the cornea do do

A

Helps focus light on the retina and protects the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do the muscles around the lens do

A

Make it thinner and thicker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does The ciliary body contain

A

Ciliary muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the lens do

A

Finish the focusing process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does the lens do

A

Finish the focusing process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does the ciliary muscle do

A

Changes the shape of the lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the iris do

A

Controls the amount of light that goes into the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does the amount of light going into the eye affect

A

The size of the pupil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do the suspensory ligaments connect to

A

The ciliary body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does the suspensory ligaments do

A

Help make the lens smaller or bigger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does the optic nerve do

A

Sends images to the brain electronically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the pupil

A

The transparent that light enters through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What kind of surfaces to objects that reflect light well have

A

Smooth shiny

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What kind of colour are objects that reflect light well

A

Pale

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Why do certain objects give clear images

A

Because they reflect light regularly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What kind of surfaces do objects that do not reflect light well have

A

Rough Matt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What kind of colours do objects that do not reflect light well normally have

A

Dark

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Why do some objects not reflect light well

A

They reflect light irregularly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

3 properties of an image formed in á plane mirror

A

Inverted as far behind the mirror object as the object in front and same height as the object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
When a light is reflected from a plane mirror the angle of incidence equals what
The angle of reflection
26
What colour refracts the most
Blue
27
What colour refracts the least
Red
28
What happens when parallel rays pass through a convex lens and what kind of lens is this known as
They converge converging lens
29
30
When parallel rays pass through a diverging lens what happens and what lens is this known as
They diverge concave
31
When light rays pass through the lens the light from the top of the object focuses on what
Bottom of the retina
32
Where do light rays from the bottom of an object focus
On the top of the retina
33
What does the brain do when it receives an image
Flips it
34
What is white light
A mixture of many different colours
35
What can white light be split into to
A spectrum
36
What happens to light as it enters a prism
It refracts
37
How does each colour refract in a prism
Differently
38
What is light leaving a prism called
Dispersion
39
What’s the order of colour from a prism from least to most
Red orange yellow green blue indigo violet
40
Why do colours refract at different rates
Due to the wavelength
41
What colour has the shortest wavelength
Violet
42
What is the spectrum of light
The electromagnet spectrum
43
What is the electromagnet scale made up of
Radiation waves
44
What’s the 7 main types of radiation
Radio microwave Infared visible ultraviolet X-ray and gamma ray
45
What radiation has the longest wavelength
Radio
46
Which two radiations do not penetrate earths atmosphere
Game and xray
47
What radiation is the size of an atom
Xray
48
What is the relationship between wavelength and energy
Inversely proportional
49
Explain the relationship between wavelength and energy
More energy means more wavelength
50
2 use for gamma rays
Sterilise and kill cancer cells
51
2 uses for X-ray
Bone X-rays and airport security
52
Where is uv found
From the sun
53
1 use of uv
Sun beds
54
2 uses of visible light
Light bulbs and to screen
55
What can over exposure to visible light cause
Damage to retina
56
What can over exposure to gamma uv and X-ray do
Kill/damage cells and cause cancer
57
3 uses for infrared
Tv remotes heaters and fires
58
What can infrared cause
Skin burns
59
3 uses of microwave
Oven microwave mobiles and satellites
60
2 uses of radio
Radios and satellites
61
What 2 properties does every wave on the electromagnetic scale have
Are transverse waves and can travel in a vacuum
62
How fast do electromagnetic waves move in a vacuum
300,000,000 m/s
63
By definition what is a transverse wave
Where the vibration of particles within the wave is perpendicular to the direction of the energy in the wave
64
What 6 radiations cannot be seen by our eyes
Gamma X-rays uv infrared microwave and radio
65
What 2 radiations are similar to X-rays
Uv and gamma
66
What 2 radiations cannot be seen pass through metals
X-rays and gamma rays
67
What radiation is caused by warm objects
Infrared
68
What
69
What radiation is used for communication
Radio and micro
70
How far does radio radiation travel in one second
300,000,000 meters
71
What is the electromagnetic spectrum
À magnet with an electrical current

Physics (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions