Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Lower Sec Sci > Light > Flashcards

Light Flashcards

1
Q

What are the 2 key properties of light

A
  1. It travels in a straight line
  2. When blocked it causes a shadow to be formed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the definition of reflection

A

The bouncing of light off a surface

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

What are the properties of a plane mirror

A
  1. The image is the same size as the object
  2. The image is upright
  3. The image is virtual
  4. The image is laterally inverted
  5. Same distance between the mirror and object/image
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Uses of plane mirror

A

Periscope and mirrors to check one’s appearance

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

What are the properties of a concave mirror

A
  1. Bends inward
  2. The image is virtual
  3. The image is magnified
  4. The image is upright
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the uses of a concave mirror

A

Dentist and microscopes

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

What are the properties of a convex mirror

A
  1. It bends outward
  2. Smaller
  3. Larger field of view
  4. The image is upright
  5. The image is virtual
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the definition of refraction

A

The bending of light at the boundary of two different optical mediums

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

Order of optical density (least to most)

A
  1. Gas
  2. Liquid
  3. Solid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens to light when it enters water from the air

A

Light slows down and bends toward the normal

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

What is the order of dispersion of light

A
  1. Red
  2. Orange
  3. Yellow
  4. Green
  5. Blue
  6. Indigo
  7. Violet
    (violet bending the most and red bending the least)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is infrared radiation applications

A

TV remotes, temperature screening devices

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

What is Electromagnetic radiation

A

Radiations other than light that is not visible to the human eye

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

What are the harmful effects of infrared radiation

A
  1. Overexposure can harm eyes
  2. Causes climate change when infrared radiation is trapped in the atmosphere
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Application of UV radiation

A
  1. Used in the treatment of skin diseases
  2. used in the sterilisation of medical instruments
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the harmful side effects of UV radiation

A
  1. Harms eyes when overexposed
  2. Causes skin cancer when overexposed
17
Q

Harmful effects of visible light

A
  1. Light pollution
  2. Can cause deterioration of old items
  3. Disrupts wildlife activities
18
Q
A

Lower Sec Sci (12 decks)

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