Electromagnetic Waves
Class:
Name:
1.
___________
Date:
The accompanying diagram below shows
an antenna emitting an electromagnetic
wave.
3.
4.
In what way did the electrons in the
antenna produce the electromagnetic
wave?
(1) by remaining stationary
A monochromatic beam of light has a
frequency of 6:5 1014 hertz. What color
is the light?
(1) yellow
(2) orange
(3) violet
(4) blue
A beam of green light may have a
frequency of
7 Hz
(1) 5:0
10
(3) 3:0
108 Hz
(2) 1:5
102 Hz
(4) 6:0
1014 Hz
(2) by moving at constant speed upward,
only
(3) by moving at constant speed
downward, only
5.
(4) by accelerating alternately upward
and downward
Compared to wavelengths of visible light,
the wavelengths of ultraviolet light are
(1) shorter
(2) longer
(3) the same
2.
A typical microwave oven produces
radiation at a frequency of 1:0 1010
hertz. What is the wavelength of this
microwave radiation?
(1) 3:0
10
1m
(2) 3:0
10
(3) 3:0
1010 m
(4) 3:0
1018 m
6.
2m
page 1
Which characteristic of electromagnetic
radiation is directly proportional to the
energy of a photon?
(1) wavelength
(2) period
(3) frequency
(4) path
7.
11.
Orange light has a frequency of 5:0 1014
hertz in a vacuum. What is the
wavelength of this light?
(1) 1:5
1023 m
(2) 1:7
106 m
(3) 6:0
10
7m
(4) 2:0
10
15 m
12.
8.
In a vacuum, all electromagnetic waves
have the same
(1) wavelength
(2) frequency
(3) speed
(4) amplitude
An electromagnetic AM-band radio wave
could have a wavelength of
(1) 0.005 m
(2) 5 m
(3) 500 m
(4) 5 000 000 m
A television remote control is used
to direct pulses of electromagnetic
radiation to a receiver on a television.
This communication from the remote
control to the television illustrates that
electromagnetic radiation
(1) is a longitudinal wave
(2) possesses energy inversely
proportional to its frequency
9.
(3) di racts and accelerates in air
What is the period of a 60.-hertz
electromagnetic wave traveling at
3:0 108 meters per second?
2s
(1) 1:7
10
(3) 6:0
101 s
(4) transfers energy without transferring
mass
7s
(2) 2:0
10
(4) 5:0
106 s
13.
What is characteristic of both sound
waves and electromagnetic waves?
(1) They require a medium.
10.
(2) They transfer energy.
An electromagnetic wave traveling
through a vacuum has a wavelength of
1:5 10 1 meter. What is the period of
this electromagnetic wave?
10 s
(1) 5:0
10
(3) 4:5
107 s
Class: ___________
(2) 1:5
10 1 s s
(4) 2:0
109 s
(3) They are mechanical waves.
(4) They are longitudinal waves.
14.
page 2
Determine the color of a ray of light
with a wavelength of 6:21 10 7 meter.
Electromagnetic Waves
15.
16.
Exposure to ultraviolet radiation can
damage skin. Exposure to visible light
does not damage skin. State one possible
reason for this di erence.
18.
Base your answer(s) to the following
question(s) on the information and
diagram below.
A 1:50 10 6 -meter-long
segment of an electromagnetic wave
having a frequency of 6:00 1014
hertz is represented below.
Base your answer(s) to the following
question(s) on the information and graph
below.
On the diagram above, mark two points
on the wave that are in phase with each
other. Label each point with the letter P.
Sunlight is composed of various
intensities of all frequencies of
visible light. The graph represents
the relationship between light
intensity and frequency.
19.
According to the Reference Tables for
Physical Setting/Physics, which type of
electromagnetic wave does the segment
in the diagram represent?
20.
Base your answer(s) to the following
question(s) on the information below.
Based on the graph, which color of
visible light has the lowest intensity?
17.
A 0.12-meter-long
electromagnetic (radar) wave is
emitted by a weather station
and re ected from a nearby
thunderstorm.
It has been suggested that re trucks
be painted yellow green instead of
red. Using information from the
graph, explain the advantage of using
yellow-green paint.
Class: ___________
Determine the frequency of the radar
wave. [Show all calculations, including
the equation and substitution with units.]
page 3
Electromagnetic Waves
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Class: ___________
1.
Answer:
4
2.
Answer:
4
3.
Answer:
4
4.
Answer:
4
5.
Answer:
1
6.
Answer:
3
7.
Answer:
3
8.
Answer:
3
9.
Answer:
1
10.
Answer:
1
11.
Answer:
3
12.
Answer:
4
13.
Answer:
2
14.
Answer:
orange
15.
Answer:
— Visible light has less energy.
Electromagnetic Waves
— Visible light has lower frequency.
— Visible light has longer wavelength.
— Ultraviolet has higher energy.
— Ultraviolet has higher frequency.
— Ultraviolet has shorter wavelength.
— Ultraviolet radiation resonates with the cell membrane.
16.
Answer:
violet the one with the greatest
frequency
17.
Answer:
06/28/2013
Yellow green has a higher intensity.
Yellow green is brighter than red.
18.
Answer:
19.
Answer:
visible light or green light
20.
Answer:
2:5
109 Hz