Zech's Science - Light

Question 1

Light travels in a _____________ until it strikes an object.

Answer 1

Light travels in a straight path until it strikes an object.

Question 2

Once light strikes an object, it can be __________, ___________, or ____________

Answer 2

Once light strikes an object, it can be absorbed, reflected, or refracted

Question 3

Reflection is the ______________ of light.

Answer 3

Reflection is the “bouncing off” of light.

Question 4

Refraction is the ______________ of light.

Answer 4

Refraction is the bending of light.

Question 5

________ objectes reflect some light.

Answer 5

All objects reflect some light.

Question 6

______ objects reflect more light than _______ objects.

Answer 6

shiny objects reflect more light than Non-shiny objects.

Question 7

______occurs when an object travels from one medium Material to another. Example: Light travels from air to water.

Answer 7

Refraction occurs when an object travels from one medium Material to another. Example: Light travels from air to water.

Question 8

Objects can ____ light.

Answer 8

Objects can absorb light.

Question 9

When an object absorbs light, its temperature increases because __________.

Answer 9

When an object absorbs light, its temperature increases because Light is a form of heat .

Question 10

__________ absorb _____ light than light colors.

Answer 10

Dark colors absorb more light than light colors.

Question 11

on a ____ day, you stay cooler by wearing a _____ T-shirt, because _____ absorbs less heat.

Answer 11

on a hot day, you stay cooler by wearing a white T-shirt, because white absorbs less heat.

Question 12

On a ___ day, you stay warmer by wearing a black jacket because_____ absorbs heat.

Answer 12

On a cold day, you stay warmer by wearing a black jacket because black absorbs heat.

Question 13

Transparent

Answer 13

• Definition
• Allowing light to pass through so that objects behind can be distinctly seen.

Question 14

Translucent

Answer 14

Definition

allowing light, but not detailed shapes, to pass through

Question 15

Opaque

Answer 15

Defanition

not able to be seen through

Question 16

Reflect

Answer 16

Definition

When light bounces of an object

Question 17

Refract

Answer 17

Definition

When light bends off an object

Question 18

Absorb

Answer 18

Definition

to soak up energy

Question 19

Shadow

Answer 19

Definition

The absence of light

Question 20

Light Can travel through a ___________________ (outer space).

Answer 20

Light Can travel through a Vacuum (outer space).

Question 21

Light can also travel through ______________.

Answer 21

Light can also travel through Matter.

Question 22

A ____________ is a tool that can be used to see objects that are out of a person’s line of sight.

Answer 22

A periscope is a tool that can be used to see objects that are out of a person’s line of sight.

Question 23

The ______________ from the room strikes the mirror near the top of the periscope.

Answer 23

The light from the room strikes the mirror near the top of the periscope.

Question 24

The light is _____________ to the mirror at the bottom of the periscope. Finally, the light reaches your eye.

Answer 24

The light is reflected to the mirror at the bottom of the periscope. Finally, the light reaches your eye.

Question 25

____________\_ is ____________ in order to see.

Answer 25

Light is necessary in order to see.

Question 26

Without __________ you would not be able to see anything.

Answer 26

Without light you would not be able to see anything.

Question 27

Some objects ____________ (give off) light.

Answer 27

Some objects emit (give off) light.

Question 28

Some objects that emit light are __________\_ and others are ________________ .

Answer 28

Some objects that emit light are artificial and others are natural.

Question 29

Lamps*, *night-lights, and electronic screens are a few examples (there are many more) _______________ that emit light.

Answer 29

Lamps, night-lights, and electronic screens are a few examples (there are many more) artificial objects that emit light.

Question 30

The sun, lighting strikes and stars are a few examples (ther are many more ) of _______________ that emit light.

Answer 30

The sun, lighting strikes and stars are a few examples (ther are many more ) of natural sources that emit light.

Question 31

___________** is made of **_________\_ of the visible spectrum

Answer 31

White light is made of all colors of the visible spectrum

Question 32

The reason an object appears to have a particular color is because all colors of the spectrum are being _________________ except for the __________ that we see.

Answer 32

The reason an object appears to have a particular color is because all colors of the spectrum are being absorbed except for the color that we see.

Question 33

The _________ that we see is the color that is __________ back to our eye.

Answer 33

The color that we see is the color that is reflected back to our eye.

Question 34

___________________ objects allow ________ light to pass through.

Answer 34

Transparents objects allow all light to pass through.

Question 35

_______________ objects allow some light to pass throught.

Answer 35

Translucent objects allow some light to pass throught.

Question 36

_____________ objects allow all light to pass throught.

Answer 36

Transparent objects allow all light to pass throught.

Question 37

____________________ objects block or reflect all light from traveling through.

Answer 37

Opaque objects block or reflect all light from traveling through.

Question 38

Opaque objects _________or ___________ all light from traveling through.

Answer 38

Opaque objects block or reflect all light from traveling through.

Question 39

A_______________ is formed when light strikes opaque objects

Answer 39

A shadow is formed when light strikes opaque objects

Question 40

A ______________ is a figure that separates white light into colored light.

Answer 40

A Prism is a figure that separates white light into colored light.

Question 41

White light travels in a ____________ line to the prism.

Answer 41

White light travels in a straight line to the prism.

Question 42

When Light reaches the prism, the light is _______________ (bent) because the medium (material) that the light travels through changes from air to glass.

Answer 42

When Light reaches the prism, the light is refracted (bent) because the medium (material) that the light travels through changes from air to glass.

Question 43

The prism _________________ the white light into a spectrum of colored light.

Answer 43

The prism separates the white light into a spectrum of colored light.

Question 44

Christian Huygen in the 1600s developeda theory that light was ____________.

Answer 44

Christian Huygen in the 1600s developeda theory that light was waves.

Question 45

_____________________ designed experiements in 1800s that showed the ancient Greeks (light as particles flowed like water) and Huygens (light moved in waves, long or short, by a straight line) were both right.

Answer 45

Thomas Young designed experiements in 1800s that showed the ancient Greeks (light as particles flowed like water) and Huygens (light moved in waves, long or short, by a straight line) were both right.

Question 46

The type of light our eyes can see is _________\_ light energy.

Answer 46

The type of light our eyes can see is visible light energy.

Question 47

Sometimes the light is _______ when it strikes matter

Answer 47

Sometimes the light is absorbed when it strikes matter

Question 48

Light travels about ______Miles per second

Answer 48

Light travels about 186000 Miles per second

Question 49

When light travels through a _______ it ______ down

Answer 49

When light travels through a window it slows down