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Sci 8 -Unit 3 - Topic 1-5 review

Total questions: 33

Worksheet time: 31mins

Name
Class
Date
1.

If I were to stand in front of a flat mirror 5m away how many would I appear on the flat mirror

a)

10m

b)

5m

c)

0m

d)

1m/s

2.

The angle of incidence is equal to the angle of reflection

a)

Law of Reflection

b)

Law of Light

c)

Incidence Ray

d)

The Normal

3.

The ray of light that strikes a mirror

a)

Reflected Ray

b)

Incidence Ray

c)

Angle of Incidence

d)

Angle of Reflection

4.

The ray that bounces off the mirror.

a)

Angle of Reflection

b)

Incidience Ray

c)

Reflected Ray

d)

Angle of Reflection

5.

The angle between the incident ray and the normal. (X on the diagram)

a)

Angle of X-Ray

b)

Angle of Reflection

c)

Angle of Incidence

d)

Angle of Normal

6.

An imaginary line that is drawn at a right angle (90 degrees) to a mirror (Green line)

a)

Reflection Ray

b)

Normal

c)

Incidence Ray

d)

Light Ray

7.

If the angle of incidence in the diagram is 80°, the angle of reflection will be:

a)

10°

b)

100°

c)

90°

d)

80°

8.

In order to see a picture it must

a)

produce light

b)

reflect light

c)

absorb light

9.

Light always travels in a

a)

straight line

b)

wavy line

c)

curved line

d)

zig-zag line

10.

The production of light energy when an object is heated describes which source of light?

a)

Fluorescence

b)

Incandescence

c)

Chemiluminescence

d)

Triboluminescence

11.

What source of light is shown in the image above?

a)

Incadescence

b)

Fluorescence

c)

Bioluminescence

d)

Triboluminescence

12.

Which of the following statements is false?

a)

Opaque objects only absorb light.

b)

Translucent materials only transmit some light.

c)

Transparent materials allow light to pass through freely.

d)

According to the ray model of light, light travels in a straight line.

13.

Which of the following statements about convex mirrors are false?

a)

Convex mirrors spread out light rays.

b)

Convex mirrors produce images that are smaller, upright, behind the mirror, real

c)

Often used as store security mirrors

14.

Which statement does not describe this image?

a)

Light is refracted twice.

b)

Light is slowing down in the first refraction.

c)

Light is slowing down in the second refraction.

d)

The rectangle medium is more dense than the surrounding medium.

15.

Which statement does not describe the image above?

a)

The image shows a convex lens.

b)

The image shows a converging lens.

c)

The image shows a concave lens.

16.
Which parts of your eye are transparent?
a)
retina
b)
optic nerve
c)
cornea and lens
d)
iris
17.
This part of the eye carries the message from your eye to the part of your brain that controls vision. 
a)
cornea
b)
lens
c)
optic nerve
d)
retina
18.
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)
pupi
d)
iris
19.
The back of the eye;  an upside-down image of whatever you are looking at is projected here. 
a)
lens
b)
cornea
c)
pupi
d)
retina
20.
The lens of your eye is convex.  Because of this, what happens to light as it passes through the lens? 
a)
Light is absorbed. 
b)
Light is reflected. 
c)
Light is refracted.
d)
Light is transmitted. 
21.
Which part of the eye focuses light onto the retina? 
a)
Cornea
b)
Pupil
c)
Lens
d)
Optic Nerve
22.

Which part is #4?

a)

pupil

b)

iris

c)

cornea

d)

lens

23.

What does the optic nerve do?

a)

transmit impulses from retina to brain

b)

helps the eye focus

c)

receives light and sends it to brain

d)

transmits light rays to retina

24.

What does the iris do?

a)

transmits light rays to retina

b)

helps the eye focus

c)

allows light to enter eye

d)

regulates how much light enters the eye

25.
Both reflecting and refracting telescopes are designed to
a)
break visible light into colors of the spectrum.
b)
separate visible light from ultraviolet and radio waves.
c)
gather and focus visible light.
d)
work better with short-wavelength radiation.
26.
Reflecting telescopes differ from refracting telescopes in having
a)
no eyepiece lens.
b)
two large objective lenses.
c)
a mirror instead of an objective lens.
d)
one large objective lens.
27.
A ______ telescope uses a mirror to focus light onto a small area.
a)
reflecting
b)
refracting
c)
radio
d)
spectrum
28.
What type of telescope is this?
a)
Refractor
b)
Reflector
c)
Non-Optical
d)
X- Ray
29.
What does Refracting Telescope have?
a)
Sand
b)
Mirrors
c)
Lens
d)
Batmobile 
30.
A telescope that can enlarge images from very far away has high.....
a)
Aperture
b)
Resolution 
c)
magnification
d)
Definition
31.
What is the MAJOR problem with trying to see stars in or near a city?
a)
Not as many people with telescopes
b)
Light pollution
c)
Clouds
d)
The stars are too far away.
32.

____ are thick in the middle and thin at the edges.

a)

Concave lenses

b)

Convex lenses

c)

Concave mirrors

d)

Plane mirrors

33.

A farsighted eye focuses an image ____.

a)

behind the retina

b)

in front of the lens

c)

in front of the retina

d)

on the retina

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