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