Zech's Science - Light Flashcards
Review for Science Test 1.18.19
Light travels in a _____________ until it strikes an object.
Light travels in a straight path until it strikes an object.
Once light strikes an object, it can be __________, ___________, or ____________
Once light strikes an object, it can be absorbed, reflected, or refracted
Reflection is the ______________ of light.
Reflection is the “bouncing off” of light.
Refraction is the ______________ of light.
Refraction is the bending of light.
________ objectes reflect some light.
All objects reflect some light.
______ objects reflect more light than _______ objects.
shiny objects reflect more light than Non-shiny objects.
______occurs when an object travels from one medium Material to another. Example: Light travels from air to water.
Refraction occurs when an object travels from one medium Material to another. Example: Light travels from air to water.
Objects can ____ light.
Objects can absorb light.
When an object absorbs light, its temperature increases because __________.
When an object absorbs light, its temperature increases because Light is a form of heat .
__________ absorb _____ light than light colors.
Dark colors absorb more light than light colors.
on a ____ day, you stay cooler by wearing a _____ T-shirt, because _____ absorbs less heat.
on a hot day, you stay cooler by wearing a white T-shirt, because white absorbs less heat.
On a ___ day, you stay warmer by wearing a black jacket because_____ absorbs heat.
On a cold day, you stay warmer by wearing a black jacket because black absorbs heat.
Transparent
- Definition
- Allowing light to pass through so that objects behind can be distinctly seen.
Translucent
Definition
allowing light, but not detailed shapes, to pass through
Opaque
Defanition
not able to be seen through
Reflect
Definition
When light bounces of an object
Refract
Definition
When light bends off an object
Absorb
Definition
to soak up energy
Shadow
Definition
The absence of light
Light Can travel through a ___________________ (outer space).
Light Can travel through a Vacuum (outer space).
Light can also travel through ______________.
Light can also travel through Matter.
A ____________ is a tool that can be used to see objects that are out of a person’s line of sight.
A periscope is a tool that can be used to see objects that are out of a person’s line of sight.
The ______________ from the room strikes the mirror near the top of the periscope.
The light from the room strikes the mirror near the top of the periscope.
The light is _____________ to the mirror at the bottom of the periscope. Finally, the light reaches your eye.
The light is reflected to the mirror at the bottom of the periscope. Finally, the light reaches your eye.
____________\_ is ____________ in order to see.
Light is necessary in order to see.
Without __________ you would not be able to see anything.
Without light you would not be able to see anything.
Some objects ____________ (give off) light.
Some objects emit (give off) light.
Some objects that emit light are __________\_ and others are ________________ .
Some objects that emit light are artificial and others are natural.
Lamps*, *night-lights, and electronic screens are a few examples (there are many more) _______________ that emit light.
Lamps, night-lights, and electronic screens are a few examples (there are many more) artificial objects that emit light.
The sun, lighting strikes and stars are a few examples (ther are many more ) of _______________ that emit light.
The sun, lighting strikes and stars are a few examples (ther are many more ) of natural sources that emit light.
___________** is made of **_________\_ of the visible spectrum
White light is made of all colors of the visible spectrum
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.
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.
The _________ that we see is the color that is __________ back to our eye.
The color that we see is the color that is reflected back to our eye.
___________________ objects allow ________ light to pass through.
Transparents objects allow all light to pass through.
_______________ objects allow some light to pass throught.
Translucent objects allow some light to pass throught.
_____________ objects allow all light to pass throught.
Transparent objects allow all light to pass throught.
____________________ objects block or reflect all light from traveling through.
Opaque objects block or reflect all light from traveling through.
Opaque objects _________or ___________ all light from traveling through.
Opaque objects block or reflect all light from traveling through.
A_______________ is formed when light strikes opaque objects
A shadow is formed when light strikes opaque objects
A ______________ is a figure that separates white light into colored light.
A Prism is a figure that separates white light into colored light.
White light travels in a ____________ line to the prism.
White light travels in a straight line to the prism.
When Light reaches the prism, the light is _______________ (bent) because the medium (material) that the light travels through changes from air to glass.
When Light reaches the prism, the light is refracted (bent) because the medium (material) that the light travels through changes from air to glass.
The prism _________________ the white light into a spectrum of colored light.
The prism separates the white light into a spectrum of colored light.
Christian Huygen in the 1600s developeda theory that light was ____________.
Christian Huygen in the 1600s developeda theory that light was waves.
_____________________ 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.
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.
The type of light our eyes can see is _________\_ light energy.
The type of light our eyes can see is visible light energy.
Sometimes the light is _______ when it strikes matter
Sometimes the light is absorbed when it strikes matter
Light travels about ______Miles per second
Light travels about 186000 Miles per second
When light travels through a _______ it ______ down
When light travels through a window it slows down
