Quiz about 8- Waves and Optics- End of Unit Test

Question 1

What is light?

Accepted Answer

A small part of the EM spectrum

Answer

A type of sound wave

Answer

A form of matter

Answer

A chemical reaction

Question 2

What is the speed of light in space?

Accepted Answer

300,000km/s

Answer

150,000km/s

Answer

197,000km/s

Answer

450,000km/s

Question 3

What is the speed of light in glass?

Accepted Answer

197,000km/s

Answer

150,000km/s

Answer

300,000km/s

Answer

450,000km/s

Question 4

What is the range of wavelengths for light waves?

Accepted Answer

400nm to 700nm

Answer

200nm to 500nm

Answer

500nm to 800nm

Answer

600nm to 900nm

Question 5

What is a particle of light called?

Accepted Answer

Photon

Answer

Electron

Answer

Proton

Answer

Neutron

Question 6

How big is a nanometer?

Accepted Answer

One billionth of a meter

Answer

One millionth of a meter

Answer

One thousandth of a meter

Answer

One hundredth of a meter

Question 7

What happens when light is absorbed by an object?

Accepted Answer

It is transferred to the object, mainly as heat

Answer

It is reflected as a different color

Answer

It is transmitted to another side

Answer

It creates a magnified image of the object

Question 8

What does it mean when light is reflected?

Accepted Answer

It bounces off the object

Answer

It is stored within the object

Answer

It passes through the object

Answer

It is absorbed and re-emitted by the object

Question 9

When light is transmitted, what does it do?

Accepted Answer

It goes through the object

Answer

It gets absorbed by the object

Answer

It reflects off the object and changes direction

Answer

It causes the object to glow

Question 10

What does an opaque object do to light?

Accepted Answer

Does not allow light to pass through, absorbs or reflects it

Answer

Allows all light to pass through

Answer

Allows some light to pass through but not clearly

Answer

Allows almost all light to pass through clearly

Question 11

What is a characteristic of a translucent object?

Accepted Answer

It allows some light to pass through but not clearly

Answer

You cannot see through it at all

Answer

It allows all light to pass through clearly

Answer

It reflects all light

Question 12

Which of the following best describes a transparent object?

Accepted Answer

It allows almost all light to pass through, so you can see through it clearly

Answer

It does not allow any light to pass through

Answer

It allows some light to pass through and reflects the rest

Answer

It absorbs all light

Question 13

What is white light made up of?

Accepted Answer

All the colors of the rainbow

Answer

Only the primary colors

Answer

Only the secondary colors

Answer

Ultraviolet light only

Question 14

How do we know that white light is made up of all the colors of the rainbow?

Accepted Answer

Because a prism splits the light into its component colors

Answer

Because a filter separates the colors

Answer

Because a mirror reflects the colors differently

Answer

Because a lens focuses the colors to a point

Question 15

What does a blue object do with light?

Accepted Answer

Reflects blue light and absorbs all others

Answer

Reflects all colors except blue

Answer

Absorbs blue light and reflects all others

Answer

Reflects all colors of light equally

Question 16

What happens to light when it hits a black object?

Accepted Answer

It is all absorbed

Answer

It is all reflected

Answer

It is partially absorbed and partially reflected

Answer

It changes color

Question 17

What does a white object do with light?

Accepted Answer

Reflects all colors of light

Answer

Absorbs all colors of light

Answer

Changes the color of light

Answer

Emits its own light

Question 18

What are the three primary colors of light?

Accepted Answer

Red, green, blue

Answer

Red, yellow, blue

Answer

Yellow, green, cyan

Answer

Magenta, yellow, cyan

Question 19

What is created when the three primary colors of light are combined in different combinations and amounts?

Accepted Answer

All colors we see

Answer

A rainbow

Answer

Black light

Answer

Transparent light

Question 20

What secondary color of light is made by combining red and blue light in equal amounts?

Accepted Answer

Magenta

Answer

Yellow

Answer

Cyan

Answer

Green

Question 21

What type of reflection occurs when an object surface is smooth and you see an image?

Accepted Answer

Regular

Answer

Diffuse

Answer

Scattered

Answer

Dispersed

Question 22

What happens during diffuse reflection?

Accepted Answer

Light is scattered in many directions, and no image appears.

Answer

Light is reflected in one direction only.

Answer

Light is focused into a single point.

Answer

Light is absorbed by the surface.

Question 23

What is a lens?

Accepted Answer

A lens is a clear, curved transparent object used to bend light.

Answer

A lens is a clear, curved transparent object used to reflect light.

Answer

A lens is a clear, flat transparent object used to bend light.

Answer

A lens is an opaque, curved object used to block light.

Question 24

What is the purpose of using lenses?

Accepted Answer

To curve light on purpose.

Answer

To straighten curved light.

Answer

To diffuse light into colors.

Answer

To absorb light completely.

Question 25

What do convex lenses do to light rays?

Accepted Answer

Converge

Answer

Diverge

Answer

Absorb

Answer

Reflect

Question 26

What do concave lenses do to light rays?

Accepted Answer

Diverge

Answer

Converge

Answer

Reflect

Answer

Absorb

Question 27

What type of waves are electromagnetic waves?

Accepted Answer

Transverse waves

Answer

Longitudinal waves

Answer

Surface waves

Answer

Mechanical waves

Question 28

Can electromagnetic waves travel through a medium?

Accepted Answer

No, they do not require a medium to travel

Answer

Yes, but only through solid mediums

Answer

Yes, but only through liquid mediums

Answer

No, they require a vacuum to travel

Question 29

What is the term used to describe the highest point of a transverse wave?

Accepted Answer

Crest

Answer

Trough

Answer

Amplitude

Answer

Wavelength

Question 30

What is the term used to describe the lowest point of a transverse wave?

Accepted Answer

Trough

Answer

Amplitude

Answer

Crest

Answer

Wavelength

Question 31

What does the amplitude of a transverse wave measure?

Accepted Answer

The height of the crest or depth of the trough from the rest position

Answer

The distance between two crests

Answer

The distance the wave travels in one cycle

Answer

The number of crests passing a point per unit time

Question 32

What direction do the molecules move in a transverse wave compared to the direction of wave travel?

Accepted Answer

Perpendicular to the direction of travel

Answer

In the same direction

Answer

In the opposite direction

Answer

Randomly

Question 33

How do electromagnetic waves travel?

Accepted Answer

As vibrations in electrical and magnetic fields

Answer

As vibrations in sound waves

Answer

As a steady flow of particles

Answer

As a series of mechanical compressions

Question 34

What properties do electromagnetic waves have?

Accepted Answer

Some magnetic and some electrical properties

Answer

Only magnetic properties

Answer

Only electrical properties

Answer

Neither electrical nor magnetic properties

Question 35

What does an electromagnetic wave consist of?

Accepted Answer

C) Electric and magnetic fields which vibrate, thus making waves

Answer

A) Only electric fields that vibrate

Answer

B) Only magnetic fields that vibrate

Answer

D) Sound waves that create electric and magnetic effects

Question 36

How can wavelength be measured?

Accepted Answer

From crest-to-crest or trough-to-trough.

Answer

From the start of a wave to the end of the same wave.

Answer

From the equilibrium position to the crest.

Answer

From the amplitude to the trough.

Question 37

Light bending due to a change in medium

Accepted Answer

Refraction

Answer

Reflection

Answer

Prism

Question 38

Converges light to form images

Accepted Answer

Convex Lens

Answer

Concave Lens

Answer

Electromagnetic Waves

Question 39

Colored area of the eye controlling pupil size

Accepted Answer

Iris

Answer

Cornea

Answer

Sclera

Question 40

Cells in the retina sensitive to light

Accepted Answer

Photo Receptors

Answer

Pupil

Answer

Lens

Question 41

Locating objects by bouncing sound waves

Accepted Answer

Echolocation

Answer

Partial Reflection

Answer

Wave Behavior

8- Waves and Optics- End of Unit Test

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