Quiz about Grade 8 Unit C

Question 1

Which explains why the fork looks different under water?

Accepted Answer

light is refracted at an angle

Answer

light can't pass through the glass

Answer

the wavelength of light lengthens

Answer

the amount of light increases when going through water

Question 2

Smooth surfaces _______ a lot of light.

Accepted Answer

reflect

Answer

bend

Answer

absorb

Answer

twist

Question 3

Why do we see objects as white?

Accepted Answer

They reflect all light

Answer

They absorb all light

Answer

They absorb some light and reflect some light

Question 4

Another name for light bending is ....

Accepted Answer

Refraction

Answer

Reflaction

Answer

Absorbing

Answer

mirror

Question 5

The Law of Reflection:
The angle of incidence is _________ the angle of reflection

Accepted Answer

the same as

Answer

bigger than

Answer

smaller than

Question 6

Luminous means...

Accepted Answer

Gives out its own light

Answer

Reflects light from other things

Question 7

Opaque means...

Accepted Answer

No light passes through it

Answer

All light passes through it

Answer

Some light passes through it

Question 8

_____ is a lens that is thicker in the middle and makes an object appear bigger.

Accepted Answer

convex lens

Answer

prism

Answer

concave lens

Answer

mirror

Question 9

______ is a lens that is thicker on its edges and makes an object appear smaller?

Accepted Answer

concave lens

Answer

mirror

Answer

convex lens

Answer

prism

Question 10

What Does a Concave Lens Do?

Accepted Answer

Make things smaller

Answer

Make things bigger

Answer

Make things closer

Answer

Make things happy

Question 11

What Does a Convex Lens Do?

Accepted Answer

Make things bigger

Answer

Make things smaller

Answer

Make things closer

Answer

Make things sader

Question 12

Fill in the blank with the best answer: After light passes through a convex lens the light comes together at a __________.

Accepted Answer

Focal point

Answer

Spot

Answer

point

Answer

Local Point

Question 13

Allows most light through

Accepted Answer

Transparent

Answer

eflection

Answer

Refraction

Answer

Translucent

Question 14

Blurs light as it passes through

Accepted Answer

Translucent

Answer

Transparent

Answer

Opaque

Answer

Refraction

Question 15

When light shines through a prism it creates a ________________

Accepted Answer

spectrum

Answer

colors

Answer

ROY G. BIV

Answer

electromagnetic wave

Question 16

What are the 3 primary colors of light?

Accepted Answer

red, green, blue

Answer

yellow, orange, violet

Answer

red, black, green

Answer

magenta, cyan, indigo

Question 17

_________________ is the transparent front surface of the eye

Accepted Answer

Cornea

Answer

Pupil

Answer

Lens

Answer

Iris

Question 18

____________________ is the hole through which light enters the eye.

Accepted Answer

Pupil

Answer

Cornea

Answer

Iris

Answer

Retina

Question 19

________________________ gives your eye its color/ Example: Brown, hazel, green, blue

Accepted Answer

Iris

Answer

Retina

Answer

Lens

Answer

Cornea

Question 20

What are materials that let's all light through?

Accepted Answer

Transparent

Answer

Translucent

Answer

Opaque

Question 21

What are materials that lets some light through?

Accepted Answer

Translucent

Answer

Transparent

Answer

Opaque

Question 22

What are materials that doesn't let any light through?

Accepted Answer

Opaque

Answer

Transparent

Answer

Translucent

Question 23

1.  The intensity of light is related to the amount of light being seen.

Accepted Answer

Brightness

Answer

Color

Answer

Visibile

Question 24

What is the ability to make something move, happen, or change?

Accepted Answer

Energy

Answer

Spectrum

Answer

Brightness

Question 25

What shape does light travel in?

Accepted Answer

Waves

Answer

Circles

Answer

Squares

Answer

Diamonds

Question 26

Light is predictable because it will always travel in a _________ line.

Accepted Answer

Straight

Answer

Curvy

Answer

Backwards

Answer

Crazy

Question 27

If someone is wearing a black shirt in the sunshine, what will the black do to the light?

Accepted Answer

Absorb it

Answer

Reflect it

Answer

Refract it

Answer

Diffuse it

Question 28

Faith and Elijah are using a flashlight and their hands to make shadow puppets. What property of light creates the shapes on the wall?

Accepted Answer

Light travels in a straight line.

Answer

Light transmits through their hands.

Answer

Light refracts when it passes through their hands.

Answer

Light reflects off their hands back at them.

Question 29

Light produced by humans is called

Accepted Answer

Artificial Light

Answer

Shadows

Answer

Natural Light

Answer

Color

Question 30

All are properties of light except

Accepted Answer

form of heat

Answer

travels in straight lines

Answer

can bend

Answer

form of energy

Question 31

A ______ telescope uses a mirror to focus light onto a small area.

Accepted Answer

reflecting

Answer

refracting

Answer

radio

Answer

spectrum

Question 32

refracting telescopes

Accepted Answer

uses only lenses

Answer

uses only mirrors

Answer

uses lenses and mirrors

Question 33

miroscopes

Accepted Answer

uses lenses to enlarge image

Answer

uses mirrors to enlarge image

Answer

uses lenses to shrink image

Answer

uses mirrors to shrink image

Question 34

telescopes

Accepted Answer

magnify and collect light

Answer

shrink light

Answer

refract light

Question 35

________is when a surface directs light beams in different directions.

Accepted Answer

Diffuse reflection

Answer

Refraction

Answer

Absorption

Question 36

concave mirror focal point is

Accepted Answer

infront of mirror

Answer

behind mirror

Question 37

an object will appear ____________________ when it is far away from a concave mirror

Accepted Answer

small and upside down

Answer

small and upright

Answer

big and upside down

Answer

big and upright

Question 38

an object will appear ____________________ when it is in front of a focal point from a concave mirror

Accepted Answer

big and upright

Answer

small and upside down

Answer

small and upright

Answer

big and upside down

Question 39

the focal point of a convex mirror is

Accepted Answer

behind the mirror

Answer

in front of the mirror

Question 40

objects will appear _______________ when in a convex mirror

Accepted Answer

small and upright

Answer

small and upside down

Answer

big and upright

Answer

big and upside down

Question 41

An example of a real life convex mirror is

Accepted Answer

car mirror

Answer

telescope

Answer

car head light

Answer

flashlight

Question 42

An example of a real life concave mirror is

Accepted Answer

flashlight

Answer

car mirror

Question 43

The bending of a wave as it passes at an angle from one medium to another is called?

Accepted Answer

Refraction

Answer

Convex Lens

Answer

Concave Lens

Question 44

A student placed a pencil in a cup of water.  The pencil appears broken because light-

Accepted Answer

bends when it passes through water

Answer

always travels in a straight line

Answer

makes the water in the glass evaporate

Answer

reflects the pencil on the water's surface

Question 45

The point where the rays meet is known as....

Accepted Answer

the focal point

Answer

Fire

Answer

refraction

Answer

Plane of the lens

Question 46

When light passes at an angle to the normal from one material into another material in which its speed is higher

Accepted Answer

it is bent away from the normal.

Answer

it is bent toward the normal.

Answer

it always lies along the normal.

Answer

it is unaffected.

Question 47

When light passes at an angle to the normal from one material into another material in which its speed is lower

Accepted Answer

it is bent towards the normal.

Answer

it always lies along the normal.

Answer

it is unaffected.

Answer

it is bent away from the normal.

Question 48

Is a convex lens thicker or thinner in the middle?

Accepted Answer

Thicker

Answer

Thinner

Question 49

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

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 50

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

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 51

A magnifying glass is an example of what type of lens?

Accepted Answer

convex

Answer

concave

Answer

mirror

Answer

Cylinder

Question 52

This type of Electromagnetic wave shows a break in bones.

Accepted Answer

x-ray

Answer

gamma ray

Answer

brokenometer

Answer

radio wave

Question 53

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

Accepted Answer

Radio Waves

Answer

Gamma Rays

Answer

Visible Light

Answer

Infrared rays

Question 54

Which part of the electromagnetic spectrum has high enough energy to cause damage to eyes and skin, and sometimes even cancer?

Accepted Answer

ultraviolet light

Answer

infrared light

Answer

visible light

Answer

microwaves

Question 55

Cancer can be treated with_______________waves.

Accepted Answer

Gamma

Answer

Penicillin

Answer

Radio

Answer

Infrared

Question 56

You have cool glow-in-the-dark stickers of Mickey Mouse. This is an example of

Accepted Answer

phosphorescence

Answer

fluorescence

Answer

chemiluminescence

Answer

incandescence

Question 57

What is an example of artificial light?

Accepted Answer

neon light

Answer

the sun

Answer

the stars

Answer

bioluminescence

Question 58

the ability to emit light

Accepted Answer

phosphorescence

Answer

magnetic resonance images (MRI)

Answer

gamma rays

Question 59

uses a filament to produce light

Accepted Answer

incandescent bulb

Answer

fluorescent bulb

Answer

phosphorescence

Question 60

when living organisms produce their own light

Accepted Answer

bioluminescence

Answer

luminescence

Answer

phosphorescence

Answer

photophore

Question 61

light producing organ on a firefly

Accepted Answer

photophore

Answer

phosphor

Answer

phosphorescence

Question 62

Which nerve transmits information from the eye to the brain?

Accepted Answer

Optic

Answer

Olfactory

Answer

Occulomotor

Answer

Trigeminal

Question 63

Opens and closes to adjust the total amount of light entering the eye.

Accepted Answer

Iris

Answer

Scelera

Answer

Cornea

Answer

Human lens

Question 64

What part of the eye holds the lens in place?

Accepted Answer

ciliary muscles

Answer

cornea

Answer

pupil

Answer

retina

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