Worksheets27 REVIEW on Light
Total questions: 50
Worksheet time: 39mins
Which "item" represents gamma rays:
Which "item" represents x-rays:
Which "item" represents ultraviolet radiation:
Which "item" represents visible light:
Which "item" represents infrared light:
Which "item" represents microwaves:
Which "item" represents radiowaves:
Which "item" represents the electromagnetic radiation with the highest energy:
Which "item" represents the electromagnetic radiation with the lowest energy:
Which "item" represents the electromagnetic radiation that humans can see:
Identify each part of the electromagnetic spectrum:
What did Newton show by putting light through a prism?
White light is actually made of many colors.
White light reflects all the different colors.
White light absorbs all the different colors.
White light doesn't exist.
What is the best way to describe light.
Light is only a wave
Light is only a particle
Light is neither a particle or a wave
light is both a particle and a wave
Which of the following is NOT a wave in the electromagnetic spectrum?
Gamma rays
Sound waves
X-rays
Infrared
Which electromagnetic wave is most commonly used in television remote controls?
Ultraviolet
Infrared
X-rays
Gamma rays
Which of the following is a danger associated with exposure to ultraviolet (UV) radiation?
Skin cancer
Hearing loss
Bone fractures
Tooth decay
Which electromagnetic wave is used in airport security scanners to see through luggage?
X-rays
Infrared
Radio waves
Ultraviolet
A student wants to block out microwaves from entering a room. Which material would be most effective?
Glass
Wood
Metal mesh
Plastic
Which electromagnetic wave is used in night vision devices?
Infrared
Ultraviolet
X-rays
Gamma rays
Which electromagnetic wave is most likely to cause sunburn?
Infrared
Ultraviolet
Radio waves
Microwaves
A student is asked to explain why X-rays are dangerous. Which explanation is most accurate?
They cause dehydration.
They can ionize atoms and damage living tissue.
They cause hearing loss.
They increase body temperature.
If the speed of light in a vacuum is 3.0×108 m/s, what is the time taken for light to travel from the Sun to Earth, a distance of 1.5×1011 m?
500 seconds
5,000 seconds
50 seconds
1,500 seconds
Approximately how much light is blocked by a single polarizing filter?
0%
50%
75%
100%
Approximately how much light is blocked by two polarizing filters that are perpendicular to each other?
0%
50%
75%
100%
A Polarizing filter is used to reduce glare on reflective surfaces including glass, windows, and water.
True
False
The production of light with a specific pattern of oscillation.
reflection
polarization
refraction
diffraction
If the polarizing axis of the second filter is parallel to
that of the first, the light will .............
pass through it
block
reflect
How do polarizing filters allow each eye to see separate images in the projection of 3-d movies?
No one really knows...
Each glasses lens is polarized the same and two polarized images are projected onto the screen
Each glasses lens is polarized 45 degrees from the other and two polarized images are projected onto the screen
Each glasses lens is polarized 90 degrees from the other and two polarized images are projected onto the screen
Why is light from a lamp or candle frame nonpolarized?
The electrons are vibrating in one direction
The electrons are vibrating in random directions
The electrons are not moving
They emit polarized light
What is the difference between light that is polarized and light that is not?
polarized light vibrates along multiple planes; unpolarized light vibrates along a single plane
there is no difference
polarized light vibrates along a single plane; unpolarized light vibrates along multiple planes
A Polarizing filter is used to reduce glare on reflective surfaces including glass, windows, and water.
True
False
Which of the following types of wave cannot be plane polarised?
light
microwaves
ultrasound
ultraviolet
Glass is transparent to visible light, but mostly opaque to...
infrared
ultraviolet
both
neither
Transparency is caused by the _____ of light waves.
transmission
reflection
absorption
refraction
Electrons in atoms interact with light
at all frequencies
at low frequencies
at high frequencies
only at very specific frequencies
Shadows are formed when an __________ object comes in the path of light.
transparent
reflective
polarized
opaque
What is the center, darker part of an eclipse shadow called?
Perinumbra
Hyperumbra
Penumbra
Umbra
What is the lighter part of an eclipse shadow, where the light is only partially blocked, called?
Perinumbra
Hyperumbra
Penumbra
Umbra
Which letter or letters in the picture identify the penumbra?
A
B
C
Which letter or letters in the picture identify the umbra?
A
B
C
What is the main function of binocular vision in humans?
Detecting color
Enhancing depth perception
Increasing field of view
Improving night vision
Which of the following is a cognitive factor that can cause optical illusions?
Expectation
Blood pressure
Muscle strength
Lung capacity
Which of the following best explains why some optical illusions persist even when we know they are illusions?
The brain automatically interprets visual information based on learned patterns
The eyes are malfunctioning
The air is polluted
The light is too dim
Compare monocular and binocular cues in depth perception.
Monocular cues use one eye; binocular cues use both eyes for depth perception
Both use two eyes
Monocular cues are only for color vision
Binocular cues are only for night vision
A person experiences an optical illusion where two lines of equal length appear different. What reasoning can explain this phenomenon?
The brain interprets contextual cues, leading to a misperception of length
The eyes are not functioning
The lines are actually different lengths
The room is too dark
A beam of unpolarized light passes through a polarizing filter. What is the intensity of the transmitted light compared to the original?
The same as the original
Half of the original intensity
Double the original intensity
Zero
Which of the following best explains why polarized sunglasses reduce glare from horizontal surfaces?
They absorb all light
They block vertically polarized light
They block horizontally polarized light, which is the main component of reflected glare
They increase the intensity of light
What is this filter doing to the light waves passing through?
Linearizing them
Refracting them
Amplifying them
Polarizing them
A beam of unpolarized light passes through three polarizers. The first and third are aligned, and the second is at 45∘ to them. What fraction of the original intensity is transmitted?
0
21
41
81
Suppose you are standing in the penumbra during a solar eclipse. What would you observe, and why?
Complete darkness, because all sunlight is blocked.
Partial sunlight, because only part of the sun is blocked.
No change, because the moon is too small.
A bright flash, because of light refraction.
