Quiz about Light Waves/Waves and Information

Question 1

Which term describes a line of energy that continues in one direction until it hits an object?

Accepted Answer

Ray

Answer

Reflect

Answer

Refract

Answer

Shadow

Question 2

When light hits a mirror and bounces off, which word best fits this action?

Accepted Answer

Reflection

Answer

Refraction

Answer

Absorption

Answer

Emission

Question 3

A straw in a glass of water looks bent where it enters the water. Which vocabulary word explains this bending of light?

Accepted Answer

Refract

Answer

Ray

Answer

Reflect

Answer

Glow

Question 4

Look at the model showing light interacting with a material. Which picture label matches when light goes into the material and does not come out?

Accepted Answer

Absorb

Answer

Transmit

Answer

Reflect

Answer

Refract

Question 5

Use the model to reason: If you want a flashlight beam to keep going straight through a window, which interaction should the glass cause?

Accepted Answer

Transmit

Answer

Reflect

Answer

Absorb

Answer

Refract

Question 6

What happens when light rays bounce off a surface and move in a new direction?

Accepted Answer

Reflection

Answer

Refraction

Answer

Absorption

Answer

Transmission

Question 7

Light rays bend when they enter a new medium. What is this called?

Accepted Answer

Refraction

Answer

Reflection

Answer

Absorption

Answer

Diffraction

Question 8

When light hits an object and is not reflected or bent, it is:

Accepted Answer

Absorbed

Answer

Refracted

Answer

Transmitted

Answer

Polarized

Question 9

White light separates into different colors when it refracts through which object?

Accepted Answer

Prism

Answer

Mirror

Answer

Lens

Answer

Glass of water

Question 10

Which part of the eye is the black hole in the center that receives light and lets it in?

Accepted Answer

Pupil

Answer

Lens

Answer

Retina

Answer

Optic nerve

Question 11

Which eye part focuses the light into images you can see?

Accepted Answer

Lens

Answer

Pupil

Answer

Retina

Answer

Optic nerve

Question 12

Which part of the eye receives the image from the lens and sends it to the brain?

Accepted Answer

Retina

Answer

Pupil

Answer

Iris

Answer

Cornea

Question 13

Which structure connects the eye to the brain?

Accepted Answer

Optic nerve

Answer

Lens

Answer

Retina

Answer

Cornea

Question 14

Which type of matter lets no light through?

Accepted Answer

Opaque

Answer

Transparent

Answer

Translucent

Answer

Reflective

Question 15

A material that lets some light through is called:

Accepted Answer

Translucent

Answer

Transparent

Answer

Opaque

Answer

Absorbent

Question 16

Which kinds of waves are invisible to the human eye, even though they can pass through or be absorbed by materials like bone?

Accepted Answer

X-rays, microwaves, and radio waves

Answer

Water waves and sound waves

Answer

Visible light and infrared

Answer

Ultraviolet and visible light

Question 17

Which part of the eye is the colored ring that controls how much light enters?

Accepted Answer

Iris

Answer

Retina

Answer

Lens

Answer

Cornea

Question 18

In the eye diagram, what is the dark opening in the center where light passes through?

Accepted Answer

Pupil

Answer

Retina

Answer

Cornea

Answer

Lens

Question 19

What is the job of the lens in the eye diagram?

Accepted Answer

To focus light onto the retina

Answer

To carry signals to the brain

Answer

To detect light at the back of the eye

Answer

To block light from entering

Question 20

Where does the eye form an image for you to see?

Accepted Answer

Retina

Answer

Iris

Answer

Pupil

Answer

Cornea

Question 21

A bright beam is shown entering the eye in the diagram. Which labeled term best describes this beam?

Accepted Answer

Light

Answer

Lens

Answer

Retina

Answer

Pupil

Question 22

What is a signal?

Accepted Answer

A message with information

Answer

A device that sends out radio waves

Answer

A part of a device that takes in radio waves

Answer

A kind of electrical battery

Question 23

Which part of a device sends out radio signals?

Accepted Answer

Transmitter

Answer

Antenna

Answer

Battery

Answer

Screen

Question 24

A radio is receiving music from a station. Which part is taking in the radio waves?

Accepted Answer

Antenna

Answer

Transmitter

Answer

Speaker

Answer

Microphone

Question 25

Which term describes a device that converts radio waves into a usable message?

Accepted Answer

Receiver

Answer

Transmitter

Answer

Battery

Answer

Antenna

Question 26

Digital information is best described as:

Accepted Answer

Clear-cut values such as numbers

Answer

A continuous stream of changing values

Answer

Random noise with no pattern

Answer

Only sounds and music

Question 27

Which type of wave carries signals from radio and TV stations, cell phones, and Internet satellites?

Accepted Answer

Radio waves

Answer

Sound waves

Answer

Ocean waves

Answer

Light waves

Question 28

What is the main job of a transmitter in a radio frequency device?

Accepted Answer

To send out radio signals

Answer

To store music and images

Answer

To take in radio waves

Answer

To change analog signals to digital

Question 29

Which part of a device takes in radio waves, often located at the top of a tower?

Accepted Answer

Antenna

Answer

Battery

Answer

Receiver

Answer

Speaker

Question 30

What does a receiver (such as in a cell phone) do with radio waves?

Accepted Answer

Converts them into usable messages and turns signals into music, images, or data

Answer

Blocks them from reaching the device

Answer

Only sends them to satellites

Answer

Measures their speed but not their information

Question 31

Digital signals use clear-cut values that are easy for computers to code and decode. Which example best matches a digital signal?

Accepted Answer

Numbers, dots, or dashes

Answer

A smooth, continuous wavy line

Answer

A fading echo of a sound

Answer

A rainbow of colors blending together

Question 32

Analog signals move in which way?

Accepted Answer

In a continuous stream

Answer

In separate steps

Answer

Only when powered by a transmitter

Answer

Back and forth between two fixed values

Question 33

According to the lesson, technology extends the range of our ability to do what?

Accepted Answer

Detect waves

Answer

See colors

Answer

Store food

Answer

Grow plants

Light Waves/Waves and Information

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