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Sci 8 Unit C REVIEW

Total questions: 179

Worksheet time: 2hrs 14mins

Name
Class
Date
1.

The inside of a spoon is the same as: (a)  

Choose from the below words
concave mirror
convex mirror
plane mirror
flat mirror
2.

This device will magnify objects:

a)

convex lens

b)

concave lens

c)

prism

d)

convex mirror

3.
This lens is thick in the middle
a)
convex
b)
concave
4.

Which type of materials absorb or reflect all the light?

a)

translucent

b)

transparent

c)

opaque

d)

refracted

5.

Which type of material transmits the most light?

a)

Translucent

b)

Transparent

c)

Opaque

d)

Mirror

6.

Mike wants to put a window in his bathroom. Which type of material should he pick to allow light, but keep his privacy?

a)
transparent
b)
translucent
c)
opaque
d)
relective
7.

Frosted glass and wax paper are examples of materials that are ...

a)

Transparent

b)

Translucent

c)

Clear

d)

Opaque

8.

A material that reflects or absorbs all light is...

a)
Opaque
b)
Transparent
c)
Translucent
d)
Concave
9.

What happens when parallel rays of light hit a smooth, shiny surface?

a)

Diffuse Reflection

b)

Diffraction

c)

Absorption

d)

Regular Reflection

10.

The bending of light rays as they enter a new optical medium is called...

a)

Refraction

b)

Absorption

c)

Diffuse Reflection

d)

Regular Reflection

11.

What happens when light passes from air into water?

a)

The light speeds up.

b)

The light continues at the same speed.

c)

The light slows down.

d)

The light is absorbed.

12.

A curved piece of glass or plastic that is used to refract light is called...

a)

MIrror

b)

Lens

c)

Interface

d)

Fibre optics

13.

What instrument uses lenses or mirrors to collect and focus light from distant objects?

a)

Microscope

b)

Night Vision Scope

c)

Telescope

d)

Magnifying Glass

14.

What occurs when parallel rays of light hit a rough or bumpy opaque surface?

a)

Regular Reflection

b)

Diffuse Reflection

c)

Refraction

d)

Transmission

15.
A flat sheet of glass with a silver-colored coating on one side is a 
a)
Plane Lens
b)
Plane Mirror
c)
Convex mirror
d)
Concave lens
16.

Light changing direction as it passes through one medium to another is...

a)

Refraction

b)

Reflection

c)

Transmission

d)

Interference

17.
Refraction is when light__________.
a)
bounces off an object or material.
b)
changes speed in different media, causing bending.
c)
when light travels faster than 300,000 km/s
d)
is absorbed by a material.
18.
According to the Law of Reflection, a light ray striking a mirror
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror at the same angle it hits.
19.
______ is a lens that is thicker on its edges than in the center
a)
magnifying glass
b)
convex lens
c)
concave lens
d)
prism
20.

Which type of mirror is this?

a)

Convex Mirror

b)

Concave Mirror

c)

Plane Mirror

d)

Flat Mirror

21.
What kind of lens is a magnifying glass?
a)
Convex Lens
b)
Concave Lens
22.
Concave lenses _____________ light
a)
diverge
b)
converge
23.
 Convex lenses _________ light.
a)
converge
b)
diverge
24.
What is refraction? 
a)

A type of bending of light

b)
A type of lens 
c)
A type of matter
d)

A type of reflection of light

25.
What is the incident ray?
a)
The ray of light leaving the normal
b)
The ray of light approaching the normal
26.
Reflection or refraction angles are always measured from the:
a)
Interface
b)
Normal
c)
Incident Ray
d)
Reflected Ray
27.

Look at the diagram.

Which is the label for the angle of refraction?

a)
ϴ 1
b)
ϴ 2
28.
How does light travel from a source?
a)
Around corners
b)
In circles
c)
Very slowly
d)
In a straight line
29.

Which type of mirror is in the diagram? 

a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
30.

What is the name of the perpendicular line that we use to measure angles in ray diagrams?

a)

Incident ray

b)

Reflected ray

c)

Normal line

d)

Interface

31.
If the angle of incidence is 60 degrees from the normal line, what is the angle of reflection?
a)

Angle of reflection = 30o

b)

Angle of reflection = 60o

c)

Angle of reflection = 120o

d)

Angle of reflection = 0o

32.

A concave lens creates a real image.

a)

True

b)

False

33.
The law of reflection states that the angle of reflection is equal to the angle of incidence. 
a)
True
b)
False
34.

Convex mirrors cause light to spread out.

a)

True

b)

False

35.

What is Farsightedness?

a)

difficulty seeing objects that are close

b)

difficulty seeing objects that are far away

36.
a reflection that occurs when parallel rays of light hit an uneven surface
a)
regular reflection
b)
diffuse reflection
c)
real image
d)
virtual image
37.

Look at the diagram.

Which statement is true?

a)

incidence angle is 10o

b)

incidence angle is 80o

c)

reflection angle is 10o

d)

reflection angle is 90o

38.

A surface that curves outward and causes light to spread out is a

a)
convex mirror
b)
concave mirror
c)
plane mirror
39.
This picture shows ....
a)
reflection
b)
refraction
c)
mirrors
d)
focal point
40.

An example of a convex mirror:

a)

Cosmetic mirror

b)

Passenger-side mirror on a car

c)

Flashlight

d)

Car headlights

41.

Which is a similarity between a camera and the human eye

a)

Both use a lens to focus the image.

b)

Both use photosensitive areas to detect images.

c)

Both can vary the amount of light entering through an opening.

d)

All of these are correct

42.
Pupil
a)
Focuses light
b)
Clear tissue that covers the front of the eye
c)
Opening through which light enters the eye
d)
Layer of receptor cells
43.

Which is the function of the Lens in an eye?

a)
Clear tissue that covers the eye
b)
Opening of the eye
c)
Focuses the light
d)
Regulates amount of light
44.

What is letter E in the picture?

a)

Cornea

b)

Lens

c)

Iris

d)

Optic nerve

45.

The layer of photoreceptor cells that lines the back of the eye:

a)

Iris

b)

Lens

c)

Retina

d)

Pupil

46.
Photoreceptors that detect colour are called..
a)
Cones
b)
Rods
47.

Photoreceptors that only detect light are called...

a)
Rods
b)
Cones
48.

Light entering the eye is focused behind the retina instead of directly on it, and objects close to the eye look blurry

a)

Near Sighted

b)

Far Sighted

49.
Opens and closes to adjust the total amount of light entering the pupil.
a)
Iris
b)
Sclera
c)
Cornea
d)
Tapetum
50.

The front of the eye that is curved:

a)

cone

b)

cornea

c)

iris

d)

retina

51.
The part of your eye that gives it its color.  It is a muscle that controls the size of your pupil.
a)
cornea
b)
lens
c)
pupil
d)
iris
52.

In low light, your pupil will be

a)
larger
b)
smaller
53.

The back of the eye that does not have photoreceptors:

a)

pupil

b)

optic nerve

c)

cornea

d)

iris

54.
What is the luminescent part of the cat, dog or cow eye that makes the eye glow and helps them to see in dim light?
a)
sclera pontera
b)
retina perceivum 
c)
tapetum lucidum
d)
aqueous vitreous
55.

What type of telescope is pictured in this diagram?

a)

reflector

b)

refractor

c)

binocular

d)

Galileo

56.

What type of telescope is displayed in this diagram?

a)

Reflector

b)

Refractor

c)

Binocular

d)

Mirrored

57.

Which type of telescope uses a lens to collect light?

a)

Refractor

b)

Reflector

c)

Microscopic

58.

Which telescope collects light with a mirror?

a)

Reflector

b)

Refractor

c)

Binocular

59.

Why does your pupil dilate when you enter a dark room?

a)
To protect the eye
b)
to allow more light to enter the  eye
c)
to allow less light to enter the eye
d)
to look like a  pirate
60.
The camera’s aperture controls 
a)
the opening and closing of the lens
b)
amount of light entering a camera
c)
the recording of the image
d)
focusing of the image
61.
More pixels in an image produces ____ resolution.
a)
higher
b)
lower
62.
Lower resolution is caused by ____ pixels.
a)
fewer
b)
more
63.
What is the effect of increasing the resolution of an image?
a)
The image has more white
b)
The image gets bigger
c)
The image quality improves
d)
The image gets smaller
64.
What is the name for a picture element?
a)
Pixel
b)
Dot
c)
Image
d)
Pixar
65.
A CCD is in a ...
a)
digital camera
b)
telescope
c)
microscope
d)
compound eye
66.
Insects have ...
a)
compound eyes
b)
camera eyes
67.
An ommatidium is a small part of a ...
a)
camera eye
b)
compound eye
c)
digital image
d)
telescope
68.
A lamp is 
a)
non-luminous
b)
luminous
69.
A pixel is assigned...
a)
letters
b)
colours
c)
numbers
d)
sizes
70.
High resolution means
a)
larger pixels
b)
smaller pixels
71.
The disadvantage of using chemicals in film photography is...
a)
high resolution
b)
fading
c)
lower pixels
d)
mosaic formation
72.
A characteristic of fish eyes is...
a)
a rigid lens
b)
a round lens
c)
5 cone types
d)
tapetum lucidum
73.
A characteristic of octopus eyes is...
a)
a rigid lens
b)
a round lens
c)
5 cone types
d)
tapetum lucidum
74.
A characteristic of cat eyes is...
a)
a rigid lens
b)
a round lens
c)
5 cone types
d)
tapetum lucidum
75.
To measure the angle of reflection, a _____ is used.
a)
balance
b)
compass
c)
ruler
d)
protractor
76.

What type of lens is in a 'camera' eye? 

a)
Concave Lens 
b)
Convex Lens 
77.
True or False? Convex lenses are used to correct farsightedness. 
a)
True 
b)
False 
78.
This is an example of a ________.
a)
Concave mirror
b)
Convex mirror
c)
Concave lens
d)
Convex lens
79.
What are the three primary colours of light?
a)
Red,Yellow,Blue
b)
Red,Green,Yellow
c)
Red,Green,Blue
d)
Yellow,Blue,Green
80.
When all 3 primary light colors are mixed which color is produced?
a)
black
b)
magenta
c)
white
d)
cyan
81.
Why is light refracted?
a)

Light only speeds up

b)

Light only slows down

c)

Light speed stays the same

d)

Light can either slow down or speed up, depending on the density of the optical medium

82.

This is a picture of

a)

reflection

b)

absorption

c)

refraction

d)

diffusion

83.
The scientist that thought light rays are produced from our eyes was
a)
Archimedes
b)
Pythagoras
c)
Euclid
d)
al-Haytham
84.
The scientist that correctly discovered how eyes work was
a)
Archimedes
b)
Pythagoras
c)
Euclid
d)
al-Haytham
85.
The scientist that correctly measured the speed of light was
a)
Michelson
b)
Ptolemy
c)
Newton
d)
al-Haytham
86.
The ____ in a camera matches with the iris in the eye.
a)
aperture
b)
shutter
c)
lens
d)
diaphragm
87.
The ____ in a camera matches with the pupil in the eye.
a)
aperture
b)
shutter
c)
lens
d)
diaphragm
88.

In bright light, the pupil will

a)
get smaller
b)
close
c)
constrict
d)
dilate
89.
The blind spot in your eye is caused by the 
a)
blood vessels
b)
optic nerve
c)
cone cells
d)
rod cells
90.
The coordinates of a pixel determine the pixel's...
a)
resolution
b)
colour
c)
size
d)
location
91.

What is the function of cone cells?

a)

to detect colours in dim light.

b)

to detect secondary colours in dim light.

c)

to detect colours in bright light.

92.
What part of your eye sends the messages to and from your brain?
a)
retina
b)
optic nerve
c)
iris
d)
vitreous humor
93.

Look at the diagram.

What is the label for part c of the eye diagram?

a)

Pupil

b)

Eyelid

c)

Cornea

d)

Lens

94.
An ommatidium is a small part of a ...
a)
camera eye
b)
compound eye
c)
digital image
d)
telescope
95.

The speed of light is approximately

a)

30,000 km/s

b)

300,000 km/s

c)

30,000 mi/ s

d)

300,000 m/s

96.

Which instrument only uses lenses to focus light?

a)

Microscope

b)

Telescope

97.

The scientist that correctly discovered that white light was made up of all the colours of light was...

a)

Archimedes

b)

Newton

c)

Euclid

d)

al-Haytham

98.

The scientist that tried to use reflected light as a weapon was ...

a)

Archimedes

b)

Newton

c)

Euclid

d)

Pythagoras

99.

Which of the following is made of 2 telescopes joined together?

a)

microscopes

b)

telescopes

c)

binoculars

d)

prisms

100.

This is a diagram of a

a)

microscope

b)

binocular

c)

telescope

d)

pinhole camera

101.

Telescopes ______________ & ___________________ light.

a)

magnify & collect

b)

decrease & collect

c)

magnify & diminish

d)

reduce & disperse

102.

Any device that uses light to allow humans to see an image is called:

a)

a particle device

b)

an optical device

c)

a mechanical device

d)

thermal device

103.

Mixing red and blue light creates

a)

magenta light

b)

cyan light

c)

white light

d)

yellow light

104.

When you look in the convex part of the spoon, your image is

a)

inverted

b)

upright

105.

Why can you see most objects?

a)

Light reflects off objects

b)

Light is absorbed by objects

c)

Light is bent by objects

d)

Light is refracted by objects

106.

This is an example of a __________

a)

Concave mirror

b)

Convex lens

c)

Plane mirror

d)

Concave lens

107.

When no light rays transmit through an object ...

a)

it creates a shadow

b)

it becomes luminous

c)

it becomes intense

d)

it is translucent

108.

What does a Convex Lens do when the object is close to the lens?

a)

Make things appear bigger

b)

Make things appear smaller

c)

Make things closer

d)

Make things move farther away

109.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
110.

What kind of lens is shown?

a)

Concave

b)

Convex

c)

Concord

d)

Plane

111.

Which type of mirror magnifies a close up image, like a cosmetic mirror.

a)

Concave

b)

Convex

c)

Plane

112.

Concave lenses __________ light rays.

a)

reflect

b)

converge

c)

diverge

d)

converge & diverge

113.
Which one is a convex lens?
a)
A
b)
B
114.

An optical medium ...

a)

transmits light.

b)

reflects all light rays

c)

is always opaque

d)

is always very dense

115.

This piece of paper is

a)

translucent

b)

transparent

c)

opaque

116.
How is light affected by an increase in the index of refraction?
a)
Its frequency increases
b)
Its frequency decreases
c)
Its speed increases
d)
Its speed decreases
117.

Light has the lowest velocity in which medium?

flint glass n=1.70

barium glass n=1.60

crown glass n=1.523

water n=1.33

diamond n=2.45

a)

diamond

b)

water

c)

flint glass

d)

barium glass

118.

As the distance from a light source increases, the intensity of light....

a)

Increases

b)

Decreases

c)

Gets brighter

d)

Gets more luminous

119.

Which lens represents the path light takes through a diverging lens?

a)
b)
c)
d)
120.

Which figure represents the path light takes through a converging lens?

a)
b)
c)
d)
121.

What type of lens creates the image seen in the eyeglasses?

a)

convex

b)

concave

c)

reflection

d)

plane

122.

Which optical device bends light to a focal point?

a)

convex lens

b)

concave lens

c)

plane mirror

d)

convex mirror

123.

Which of the following are uses for convex lenses? (Choose all that are correct)

a)

Camera lens

b)

Telescope lens

c)

Microscope lens

d)

Magnifying glass

124.

Which of the following are uses for concave mirrors? (Choose all that are correct)

a)

Cosmetic mirror

b)

Flashlight

c)

Car headlights

d)

Telescope

125.

The inverted image created in the picture is called the

(a)  

126.

The image created in the picture uses a (a)   lens to produce the image.

127.

What type of reflection is shown in this diagram?

a)

Regular Reflection

b)

Diffuse Reflection

128.

In the image, all the rays meet at F, What is F?

(a)  

129.

Real images

a)

are always inverted

b)

can be larger or smaller than the object

c)

can be projected onto a screen

d)

all the above

130.

A dentist uses a small dental device to help magnify teeth in your mouth. What type of device is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

131.
What is Nearsightedness? 
a)

difficulty seeing things that are close 

b)

difficulty seeing things that are far away

132.

The image is an example of a (a)   . It happens because cool and hot air have different ​ (b)  

Choose from the below words
real Image
mass
mirage
density
133.

As light passes from air into water it ________________________.

a)

speeds up

b)

continues at the same speed

c)

slows down

d)

forms a mirage

134.

Which lens can produce a real image?

a)

a

b)

b

135.

Which lens always produces an image that is upright?

a)

a

b)

b

136.
What does the word "diverging" mean?
a)

to spread apart

b)

to come together

137.

What type of lens are in 'camera eyes'?

a)

Concave

b)

Convex

138.

The iris is the coloured part of the eye

a)

true

b)

false

139.

What is the function of the sensor in a digital camera?

a)

stops the light hitting it.

b)

detects light falling on it.

c)

adjusts the amount of light that enters into camera.

140.

what is the function of iris in the eye?

a)

it detect colours.

b)

it focuses the light.

c)

it controls the size of pupil.

141.

The image formed on the retina in a 'camera eye' is _____________

a)

upright

b)

inverted

142.

Which part of the camera focuses light?

a)

sensor

b)

shutter

c)

lens

143.

The retina of the human eye has how many different types of specialized photoreceptor cells?

a)

three

b)

four

c)

two

144.

In humans, there are ___________ types of cone cells.

a)

three

b)

five

c)

two

145.

Shadows have sharp outlines because light travels in (a)   lines

146.

Select all of the objects that use a lens to focus.

a)

pinhole camera

b)

phone camera

c)

your eye

d)

microscope

147.

A digital camera detects light using...

a)

a retina

b)

a lens

c)

a flim

d)

a CCD sensor

148.

This diagram is showing that the leaf is _____________ .

a)

Luminous

b)

Transparent

c)

Translucent

d)

Opaque

149.

The correct reflected ray is shown by letter ....

a)

A

b)

B

c)

C

d)

D

150.

True or false?

Light can transmit through a translucent object.

a)

true

b)

false

151.

Which object shows regular reflection?

a)

dry asphalt road

b)

wet asphalt road

152.
Why does the lower part of the child appear so much different in size from the upper part?
a)
The light rays that travel through water and then into air are refracted.
b)
The light rays that travel through water and then into air are enlarged.
c)
The light rays that travel through air and then into water are reflected.
d)
The light rays that travel through air and then into water are reduced.
153.

The opening through which light enters the eye

a)

lens

b)

cornea

c)

pupil

d)

receptor cell

154.

Which animal does this eye belong to?

a)

fly

b)

fish

c)

snake

d)

cow

155.

Eyes that are large, forward-facing and allow for excellent depth-perception will generally belong to which type of animal?

​ (a)  

a)

Predator

b)

Prey

156.

Which of the following animals has the most different types of cone cells?

a)

human

b)

bird

c)

fish

d)

octopus

157.

Eyes that have horizontal pupils will generally belong to which type of animal?

​

a)

Predator

b)

Prey

158.

Eyes that have a round lens would belong to which type of animal?

​

a)

human

b)

goat

c)

eagle

d)

fish

159.
Which parts of your eye are transparent?
a)
retina
b)
optic nerve
c)
cornea and lens
d)
iris
160.

The angle of reflection is

a)

90 degrees

b)

55 degrees

c)

45 degrees

d)

135 degrees

161.

When using a concave mirror, where must the object be placed so that the image is inverted?

a)

far from the mirror

b)

very close to the mirror

c)

between the focal point and the mirror

d)

behind the mirror

162.

When looking through a magnifying glass, where must the object be placed so that the image is upright and enlarged?

a)

1

b)

2

c)

3

d)

4

163.

What is the angle of reflection in the ray diagram?

a)

0 degree

b)

45 degrees

c)

90 degrees

d)

140 degrees

164.

Is this ray diagram correct?

a)

yes

b)

no

165.

Which of the following will refract light the most?

a)

vacuum

b)

water

c)

glass

166.

Angle 1 is called the angle of (a)   .

167.
What part of your eye sends the messages to and from your brain?
a)
retina
b)
optic nerve
c)
iris
d)
vitreous humor
168.

The focal point lies behind the retina.

a)

Farsightedness

b)

Nearsightedness

c)

Normal vision

169.

The image focuses in front of the retina

a)

Farsightedness

b)

Nearsightedness

c)

Normal vision

170.

When looking at a far away object, ciliary muscles ​ (a)   and the lens becomes ​ (b)  

Choose from the below words
relax
thin
contract
fat
171.

Which cells distinguish between black, white and shades of gray?

a)

Cones

b)

Rods

c)

Optic Nerves

d)

Iris

172.

What colors of light do the cones detect?

a)

Magenta, cyan and yellow

b)

Red, yellow, and blue

c)

Red, green and blue

d)

Red, yellow and green

173.

If a real image forms on the retina why don't we see the world upside down?

a)

We do see the world upside down.

b)

A virtual image forms on the retina not a real image.

c)

Our brain automatically flips the image so we see the world right side up.

d)

No one knows

174.

Which part of the eye corresponds to the aperture of a camera?

a)

iris

b)

retina

c)

lens

d)

pupil

175.

Which part of the eye corresponds to the diaphragm of a camera?

a)

iris

b)

retina

c)

lens

d)

pupil

176.
Photo-receptors that detect color are called _________.
a)
cones
b)
rods
177.

Which figure represents the path light takes through a converging lens?

a)
b)
c)
178.

The eye in the diagram is ​ (a)  

Choose from the below words
farsighted
nearsighted
179.

The eye in the diagram is ​ (a)  

Choose from the below words
farsighted
nearsighted

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Final SCPASS Review

178 questions

Final SCPASS Review

quiz

Worksheet

•

KG - University