WorksheetsElectromagnetic Spectrum and Light Review HW
Total questions: 54
Worksheet time: 18mins
a form of energy that can move through the vacuum of space
(a)
a region around a charged object where the object's electric force is exerted on other charged objects
(a)
a region around a magnetic material or a moving electric charge within which the force of magnetism acts
(a)
a form of energy that exhibits wavelike behavior as it travels through space
(a)
the range of wavelengths or frequencies over which electromagnetic radiation extends
(a)
clear
(a)
semitransparent
(a)
not letting light through
(a)
a copy of an object formed by reflected or refracted rays of light
(a)
reflection of light from a smooth, shiny surface
(a)
reflection of light from a rough surface
(a)
unreal reflection; an optical illusion
(a)
light with waves that vibrate in only one plane
(a)
reflection of light in all directions
(a)
horizontal distance between the crests or between the troughs of two adjacent waves
(a)
the number of complete wavelengths that pass a point in a given time
(a)
the unit of frequency; equal to one cycle per second
(a)
a wave vibrating at right angles to the direction of its propagation
(a)
speed of light = frequency x wavelength; c = f x λ
(a)
Electromagnetic waves are transverse waves that consist of changing electric fields and changing magnetic fields.
True
False
Electric fields are produced by electrically charged particles and by changing (a) .
Magnetic fields are produced by magnets and changing (a) .
Electromagnetic waves need a medium to travel through.
True
False
The transfer of energy by electromagnetic waves traveling through matter or across space is called (a) .
What is the speed of light in a vacuum?
3.0 x 108 kilometers per second
3.0 x 108 meters per hour
3.0 x 108 meters per second
3.0 x 108 kilometers per hour
As the wavelengths of electromagnetic waves increase, the frequencies (a) , for waves moving in a vacuum.
The full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum.
True
False
Which of the following statements is true about electromagnetic waves?
different electromagnetic waves can have different frequencies
wavelength is directly proportional to frequency
electromagnetic waves always travel at the speed of light
all electromagnetic waves travel at the same speed in a vacuum
Choose the letter of each way that radio waves might be used.
x-rays machines
microwaves ovens
radio technology
television technology
Which of the following are ways that infrared rays are used?
source of light
to discover areas of heat differences
source of heat
to discover areas of depth differences
Visible light is made up of blue, red, green, orange, yellow, violet and (a) .
Ultraviolet radiation helps your skin produce vitamin D.
True
False
X-rays have higher frequencies than ultraviolet rays.
True
False
Gamma rays have the highest frequencies and therefore the most (a) and the greatest penetrating ability of all the electromagnetic waves.
Without light, nothing is visible to humans.
True
False
material that absorbs or reflects all of the light that strikes it
transparent
opaque
translucent
material that transmits light
transparent
opaque
translucent
material that scatters light
transparent
opaque
translucent
A copy of an object formed by reflected or refracted light waves is known as a(n) (a) .
When parallel light waves strike an uneven surface and reflect off it in the same direction, (a) reflection occurs.
When parallel light waves strike a rough, uneven surface and reflect in many different directions, (a) reflection occurs.
Light bends, or (a) , when it passes at an angle from one type of medium into another.
Light with waves that vibrate in only one plane is polarized light.
True
False
The effect when light is redirected as it passes through a medium is called (a) .
Shorter wavelengths refract more than longer wavelengths, and the colors separate as white light passes through a prism.
True
False
What is the process in which white light is separated into the colors of the rainbow?
reflection
dispersion
absorption
polarization
I see a red car in sunlight because the pigments in the car paint absorb red light.
True
False
These are the primary light colors.
cyan, yellow and magenta
blue, yellow and red
red, green and blue
These are the secondary light colors.
cyan, yellow and magenta
blue, yellow and red
red, green and blue
Pick the most appropriate statement regarding primary light colors.
formed when two primary colors combine
combine in varying amounts to form all possible colors
combine to form white light
Pick the most appropriate statement regarding secondary light colors.
formed when two primary colors combine
combine in varying amounts to form all possible colors
combine to form white light
A pigment is a material that absorbs some colors of light and reflects other colors.
True
False
These are the primary pigment colors.
red, green and blue
blue, yellow and red
cyan, yellow and magenta
These are the secondary pigment colors.
red, green and blue
blue, yellow and red
cyan, yellow and magenta
