WorksheetsStarting Optics
Total questions: 46
Worksheet time: 59mins
This is an example of an optical illusion.
True
False
What day is it?
Is this two faces or one vase?
Two faces
One vase
Both
Sun is a natural source of light
True
False
The light received from candle is...
Natural Source of light
Artificial Source of light
Fireflies have artificial source of light
True
False
Jelly fish are bio-luminescent and create their own light
False
True
Infrared waves have a shorter wavelength than...
ultraviolet waves
x-rays
radio waves
gamma waves
Which is an example of a radio wave?
television
lasers
remote controls
cancer treatments
The portion of the electromagnetic spectrum that humans can see is called:
radio waves
visible light
gamma rays
x-rays
the distance between peaks of adjacent electromagnetic waves is called:
wavelength
frequency
energy
amplitude
We perceive various wavelengths within the visible light spectrum as:
sound
colour
time
smell
Which of the following is a unit for frequency?
Joules
Hertz
meters per second
seconds
If you see an object that is "red", what does this mean?
The object is absorbing only red wavelengths
The object is reflecting only red wavelengths
All electromagnetic waves travel through space at the same speed.
True
False
The only type of electromagnetic waves you can see are
infrared waves
ultraviolet waves
visible light waves
Which is the shortest electromagnetic wave?
gamma
x-ray
ultraviolet
sound
Which is the longest electromagnetic wave?
gamma
radio
ultraviolet
microwave
Waves, whether ocean, electromagnetic, or sound waves, all transmit what?
Radiation
Electrons
Atoms
Energy
The frequency of a wave measures:
the length of the wave
how many times a wave passes a point in a second
how many times the waves oscillates back and forth
the number of molecular collisions per second
Do plants absorb visible light?
Yes, plants absorb all visible light
No, plants do not absorb visible light
Plants all absorb visible light except green light
Plants only absorb green light
The thick, tough, white outer covering of the eyeball is called the __________________.
sclera
lens
pupil
cornea
The place where the optic nerve leaves the retina, where there are no light-sensitive cells is the ________________.
lens
cornea
blind spot
sclera
The tough, clear covering over the iris and pupil that helps protect the eye is the __________________.
retina
lens
sclera
cornea
Which type of EM radiation has the shortest wavelengths?
gamma rays
infrared waves
blue light
microwaves
The ______________ is a muscle that controls how much light enters the eye.
iris
pupil
cornea
blind spot
The layer of light-sensitive cells at the back of the eye that detects images focused by the cornea and the lens is called the ___________________.
blind spot
sclera
retina
optic nerve
The ________________ is the dark circle in the center of your iris that lets light into the inner eye.
retina
cornea
iris
pupil
The bundle of fibers that carry information from the retina to the brain is called the ____________________.
optic nerve
blind spot
vitreous humor
aqueous humor
A clear, flexible structure that makes an image on the eye's retina. The _______________ is flexible so that it can change shape, focusing on objects that are close up and objects that are far away.
lens
cornea
pupil
retina
Identify the part of the eye colored red in this diagram.
cornea
pupil
iris
sclera
Identify the part of the eye colored red in this diagram.
cornea
pupil
iris
retina
Why did Crane not believe his eyes?
The eyes had run away.
They had mistaken Crane for someone else.
The eyes had mistaken an old spruce tree and a piece of tundra for people.
Crane was flying and he was a long distance from the land where he was looking.
What happened to Crane's eyes?
People coming down the stream took them off the log.
Crane accidently dropped them in the river.
Crane forgot what log he left them on.
An Eagle came and ate them.
When we see the moon shining, it is . . . .
glowing because it is a source of light.
glowing because it is reflecting light.
luminescent light is divided into four types
Bright
Lower
Middle
Dull
Fluorescent
Phosphorescent
Chemiluminescent
Bioluminescent
Red
Green
Blue
Yellow
Incandescent
Visible
Luminous
Bioluminescent
What are the three primary colours of light?
Cyan
Magenta
White
Violet
Indigo
Yellow
Red
Blue
Green
White
Black
Green
These EM waves can lead to cancer or sunburn.
Visible Rays
Infrared Rays
Ultraviolet Rays
X Rays
What is the function of sensor in a digital camera?
stops the light hitting it.
detects light falling on it.
adjusts the amount of light that enters into camera.
Which part of the camera focuses light?
sensor
shutter
lens
Which one of the following is not true for human eye?
the picture that forms on retina is upside down.
the pupil size changes due change in amount of light.
the iris is the transparent part of the eye.
The light energy transferred by sensor into electrical signals is stored on _________________ in a digital camera.
shutter
aperture
memory card
