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Science 8 Unit C Sec 2.0

Total questions: 59

Worksheet time: 52mins

Name
Class
Date
1.

Non-luminous objects …

a)

Create their own light

b)

Give off light

c)

Do not give off light

d)

Are light sources

2.

An example of regular reflection is…

a)

Light reflecting off of a smooth mirror

b)

Light reflecting off of a rough piece of fabric

c)

Light reflecting off of a beach

d)

Light passing through a window

3.

If the incident ray hits a plane (flat) mirror at a 35-degree angle, the Law of Reflection states that the angle of reflection should be …

a)

35 degrees

b)

55 degrees

c)

90 degrees

d)

The Law of Reflection cannot help to assume the angle of reflection

4.

An example of a concave mirror is …

a)

A car’s side mirrors

b)

A reflecting telescope

c)

The curved mirror above the pit in the library

d)

None of the above are examples of a concave mirror

5.

A convex mirror can also be called a …

a)

Converging mirror

b)

Diverging mirror

c)

Plane mirror

d)

Caved-in mirror

6.

You are stranded in the woods on a cold, sunny day. You need to start a fire to keep warm, but do not have matches or a lighter. You do, however, have three mirrors - a plane mirror, a concave mirror, and a convex mirror. You know from your science class that when an object is placed in the focal point of a certain type of mirror, it is possible to start a fire. Which of the three mirrors would you use to start a fire?

a)

Plane mirror

b)

Concave mirror

c)

Convex mirror

d)

A mirror will not help to start a fire

7.

A substance with a higher density (eg. sugar water) will make light pass through ____________________ than a substance with lower density (eg. distilled water).

a)

slower

b)

faster

c)

wavier

d)

straighter

8.

What is this image an example of?

a)

The law of refraction

b)

The law of reflection

c)

The law of absorption

9.
Which type of object will NOT allow light to pass through?
a)
Opaque
b)
Transparent
c)
Translucent
10.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
11.

The law of reflection states that

a)

When light enters a mirror on an angle, it will reflect off at a different angle

b)

When light enters a mirror at a certain angle, it will reflect off at the same angle

c)

When light enters a mirror on an angle it stays inside the mirror

d)

When light enters a mirror on an angle it will reflect off in many different directions

12.

If the angle of incidence is 50 degrees the angle of reflection will be _______ degrees.

a)

100 degrees

b)

50 degrees

c)

1 degree

d)

80 degrees

13.
According to the Law of reflection, a light ray striking a mirrow
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 a the same angle it hits.
14.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
15.

a reflection that occurs when parallel rays of light hit a rough surface

a)

regular reflection

b)

diffuse reflection

c)

real image

d)

virtual image

16.
The inside of a spoon is the same as 
a)
concave mirror
b)
convex mirror
c)
plane mirror
d)
non of the above
17.
This will magnify objects...
a)
convex lens
b)
concave lens
c)
prism
d)
convex mirror
18.
This lens is thick in the middle
a)
convex
b)
concave
19.
Which objects block all the light?
a)
translucent
b)
transparent
c)
opaque
d)
refracted
20.
Which object can you see through clearly?
a)
Translucent
b)
Transparent
c)
opaque
d)
reflective
21.
Frosted glass and wax paper are...
a)
Transparent
b)
Translucent
c)
Clear
d)
Opaque
22.
Mike wants to put a window over his bathtub. Which type of material should he pick to allow light, but keep his privacy?
a)
transparent
b)
translucent
c)
opaque
d)
relective
23.
What happens when parallel rays of light hit a smooth surface?
a)
Diffuse Reflection
b)
Diffraction
c)
Refraction
d)
Regular Reflection
24.
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 forms a mirage
25.
The bending of light rays as they enter a new medium is called...
a)
Refraction
b)
Diffraction
c)
Diffuse Reflection
d)
Regular Reflection
26.
A curved piece of glass or other transparent material that is used to refract light is called...
a)
MIrror
b)
Lens
c)
Reflector
d)
Optical fiber
27.
What occurs when parallel rays of light hit a rough or bumpy surface?
a)
Regular Reflection
b)
Diffuse Reflection
c)
Refraction
d)
Diffraction
28.
Light changing direction as it passes from one medium to another is...
a)
Refraction
b)
Reflection
c)
Diffraction
d)
Interference
29.
______ is a lens that is thicker on its edges than in the center
a)
magnifying glass
b)
convex lens
c)
concave lens
d)
prism
30.
The following is a picture of what type of mirror?  It looks like this -->   )]
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
31.
What kind of lens is a magnifying glass?
a)
Convex Lens
b)
Concave Lens
32.
What is refraction? 
a)
A type of bending
b)
A type of lens 
c)
A type of matter
d)
A type of reflection
33.
What is the incident ray?
a)
The ray of light leaving the normal
b)
The ray of light approaching the normal
34.
Reflection or refraction angles are always measured from the:
a)
Interface
b)
Normal
c)
Incident Ray
d)
Reflected Ray
35.
Which is the angle of refraction?
a)
ϴ 1
b)
ϴ 2
36.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
37.
What is the name of the perpendicular line that we use to measure angles?
a)
Incident ray
b)
Reflected ray
c)
Normal line
d)
Source ray
38.

If the angle of incidence is 60 degrees from the normal line, what is the angle of reflection?

a)

Angle of reflection = 30

b)

Angle of reflection = 60

c)

Angle of reflection = 120

d)

Angle of reflection = 0

39.
The law of reflection states that the angle of reflection is equal to the angle of incidence. 
a)
True
b)
False
40.
Convex mirrors can create real images.
a)
True
b)
False
41.
Convex mirrors cause light to spread out.
a)
True
b)
False
42.
A mirror with a flat surface is a plane mirror.
a)
true
b)
false
43.
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
44.
Which statement is true?
a)
incidence angle is 10 degree
b)
incidence angle is 80 degree
c)
reflection angle is 10 degree
d)
reflection angle is 90 degree
45.
A surface that curves outward and causes light to spread out.
a)
convex mirror
b)
concave mirror
c)
plane mirror
46.
an example of a convex mirror
a)
Cosmetic mirror
b)
Passenger-side mirror on the car
c)
Flashlight
d)
Car headlights
47.

Which of the following is a real life example of Reflection?

a)

Light passing through a window illuminating a room.

b)

Blacktop is too hot to walk on bare feet.

c)

You can see yourself in a lake.

d)

The inside of a black car is very hot.

48.

Will an opaque or transparent surface reflect more light?

a)

Opaque

b)

Transparent

49.

Property of substances that allows light to pass through them.

a)

wavelengths

b)

Law of Reflection

c)

shade

d)

transparent

50.

The angle of incidence equals the angle of reflection

a)

wavelengths

b)

law of reflection

c)

light

d)

shade

51.

The angle of reflection is 45 degrees, what is the angle of incidence?

a)

65 degrees

b)

45 degrees

c)

90 degrees

d)

180 degrees

52.

Which of the following statements are true?

a)

Reflection is the absorption of light by a transparent object.

b)

If light is shown into a mirror at a 90 degree angle, it will reflect at a 180 degree angle.

c)

Reflection occurs when light is shown onto an opaque object.

d)

Object is another name for an image.

53.

Which surface will reflect light?

a)

A mirror

b)

A desktop

c)

A carpet

d)

All the above

54.
This is an example of...
a)
Reflection
b)
Refraction
c)
Polarization
d)
Spectrum
55.
Because the light rays never meet, a concave lens can produce
a)
no image
b)
both real and virtual images
c)
only a real image
d)
only a virtual image
56.
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 forms a mir
57.
What type of image does a plane mirror produce?
a)
real and inverted
b)
virtual and inverted
c)
real and upright
d)
virtual and upright
58.
What occurs when parallel rays of light hit a rough or bumpy surface?
a)
regular reflection
b)
diffuse reflection
c)
refraction
d)
diffraction 
59.
What instruments use lenses or mirrors to collect and focus light from distant objects?
a)
microscopes
b)
optical fibers
c)
telescopes
d)
lasers