Brainscape's Knowledge GenomeTM

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


See full index

Final Exams > Unit 3 Review Science Test > Flashcards

Unit 3 Review Science Test Flashcards

1
Q

Definitions!

Electromagnetic Radiation

A

A kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously.

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

Definitions!

Ray Model Of Light

A

A model that represents light as a stream of fast-moving tiny particles that travel in a straight line to the eye where they are absorbed to form an image.

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

Definitions!

Wave Model Of Light

A

The wave model of light pictures lights traveling as a wave.

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

Definitions!

Particle Model Of Light

A

Light consisted of particles that traveled in straight lines.

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

Definitions!

Wavelength

A

Wavelength is the distance between identical points like trough to trough or crest to crest

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

Definitions!

Frequency!

A

The number of waves that pass a fixed point in unit time

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

Definitions!

Amplitude

A

the maximum displacement or distance moved by a point or the distance between the crest and center line

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

Definitions!

Reflection

A

The return of light or sound waves from a surface

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

Definitions!

Absorption

A

The transfer of the energy of a wave to matter as the wave passes through it.

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

Definitions!

Transmission

A

Transmission of light is the moving of electromagnetic waves whether visible light, radio waves, ultra violet etc. through a material.

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

Definitions!

Refraction

A

The changes in the direction of a wave passing from one medium to another are caused by its change in speed.

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

Definitions!

Laws Of Reflection

A

When a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

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

Definitions!

Plane Mirror

A

A mirror with a flat reflective surface.

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

Definitions!

Concave Mirror

A

Has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point.

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

Definitions!

Convex Mirror

A

A mirror in which the reflective surface bulges toward the light source and reflects the light outwards

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

Definitions!

Lens

A

A piece of glass or other transparent substance is used to form an image of an object by focusing rays of light from the object.

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

Definitions!

Converging Lens

A

A lens that causes parallel rays (as of light) to come to a focus.

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

Definitions!

Diverging Lens

A

A lens that causes a beam of parallel rays to diverge after refraction, as from a virtual image

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

Definitions!

Far Sighted

A

A condition in which you can see distant objects clearly, but objects nearby may be blurry. It’s a result of the visual image being focused behind the retina rather than directly on it. You can use prescription lenses to fix it.

20
Q

Definitions!

Near Sighted

A

A condition in which you can see nearby objects clearly, but distant objects may be blurry. It’s a result of the visual image being focused in front of the retina rather than directly on it. You can use prescription lenses to fix it.

21
Q

Definitions!

Snow Blindness

A

Temporary eye pain and discomfort after exposure to too much ultraviolet (UV) reflected from snow or ice. Can be avoided if you wear goggles with thin slits.

22
Q

Definitions!

Astigmatism

A

Imperfection in the curvature of the eye causes blurred distance and near vision. Occurs when either the front surface of the eye (cornea) or the lens inside the eye has mismatched curves. Can be fixed by laser eye surgery.

23
Q

Definitions!

Laser Eye Surgery

A

A medical procedure that involves the use of a laser to reshape the surface of the eye.

24
Q

Definitions!

Reflecting Telescope

A

A telescope that uses a single or a combination of curved mirrors that reflect light and form an image.

25
Q

How does electromagnetic radiation shape your world?

A
  1. Electromagnetic radiation is an important part of your world.
  2. Sources of electromagnetic radiation are all around you.
  3. Electromagnetic radiation enhances how we sense our world.
26
Q

How can models explain the properties of electromagnetic radiation?

A
  1. Visible light can be used to model all types of electromagnetic
    radiation.
  2. The ray model of light explains that light travels in straight lines.
  3. The wave model of light explains that light has wave-like properties.
  4. The particle model of light explains that light has particle-like
    properties.
27
Q

How does light behave when it encounters different materials and surfaces?

A
  1. Light can be reflected, absorbed, transmitted, or refracted.
  2. Light behaves differently when it encounters transparent, translucent,
    and opaque materials.
28
Q

How does light behave when it is reflected?

A
  1. Light is reflected in predictable patterns.
  2. Light reflected by a plane mirror produces an image that is nearly
    identical to the object.
  3. Light reflected by curved mirrors behaves in unique ways.
  4. Many technologies take advantage of light behavior when it strikes a
    reflective surface.
29
Q

How does light behave when it moves from one medium to another?

A
  1. Light changes direction and speed when it moves from one medium to
    another.
  2. Light refracts as it passes through lenses.
  3. Refraction plays a role in human vision.
  4. Many technologies take advantage of light’s behavior when it moves
    from one medium to another.
30
Q

Human Vision!

Light Enters the eye through the ____!

A

Pupil

31
Q

Human Vision!
The _____ surrounds the pupil and controls the amount of _____ entering the eye…….._______ in dim light………._________ in bright light.

A

Iris, light, expands, constricts

32
Q

Human Vision!

The _______ is a ________ tissue which covers the iris and pupil and does most of the ________.

A

Cornea, transparent, focussing

33
Q

Human Vision!

The _______ is a white tissue around the iris.

A

sclera

34
Q

Human Vision!
Light then passes through a _______ lens……image is formed of the back of the eye (______), which contains light receptor cells

A

Convex, Retina

35
Q

Human Vision!

A signal is sent to the ______ along the _______ ______.

A

Brain, Optic Nerve

36
Q

Human Vision!

The image formed on the retina is _______ _______, but the brain interprets it to be _______.

A

Upside Down, Upright

37
Q

The ________ is a small spot on the retina where the optic nerve is…..there are no light receptors there.

A

Blindspot

38
Q

Human Vision!
2 types of light receptors cells are ______ that allow us to see colors
and ________ that allow us to see in dim light

A

Cones, Rods

39
Q

What is the Pupil!

A

The opening in the center of the iris!

40
Q

What is the Blind Spot!

A

A place at the back of the eye on the retina which has few light-sensitive cells!

41
Q

What is the Cornea!

A

The tough, clear, covering over the front of the eye!

42
Q

What is the Iris!

A

The colored part of the eye!

43
Q

What is the Lens!

A

The clear disk which focuses light rays into a sharp image.

44
Q

What is the Optic Nerve!

A

The nerve that carries information from the eye to the brain!

45
Q

What is the Retina!

A

The lining of the eye which contains millions of light-sensitive cells called rods and cones!

Final Exams (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions