Introduction To Physical Science

Chapter 18: Electromagnetic Waves

Electromagnetic Waves

1
__________ is the distance from the top of one crest of a transverse wave to the top of the next crest in that wave.
A)Wave velocity
B)Frequency
C)Amplitude
D)Wavelength
2
Magnetic fields that surround all magnets exert __________.
A)air pressure
B)the magnetic force
C)electric current
D)resistance
3
The entire range of electromagnetic wave frequencies is known as __________.
A)the electromagnetic spectrum
B)ultraviolet radiation
C)visible light
D)magnetism
4
What type of waves do not require matter to carry energy?
A)electromagnetic
B)compressional
C)transverse
D)mechanical
5
Protons have a __________ charge and electrons have a __________ charge.
A)negative, neutral
B)positive, neutral
C)positive, negative
D)negative, positive
6
Which of the following enables your body to make vitamin D?
A)ultraviolet radiation
B)gamma rays
C)visible light
D)infared waves
7
Which of the following types of waves can travel through space?
A)transverse
B)compressional
C)mechanical
D)electromagnetic
8
The interaction between two magnets is called __________.
A)magnetic force
B)a magnetic field
C)current
D)polarity
9
The negatively charged particles in an atom are called __________.
A)negatrons
B)protons
C)electrons
D)neutrons
10
The specific frequency of the electromagnetic wave that a radio station is assigned is called the __________.
A)cathode
B)amplitude modulation
C)carrier wave
D)frequency modulation
11
Which of the following has the shortest wavelength?
A)green light
B)X rays
C)radio waves
D)infared radiation
12
In which of the following materials will light travel fastest?
A)vacuum
B)air
C)water
D)glass
13
__________ is a molecule composed of three oxygen atoms.
A)An antioxidant
B)CFC
C)Ozone
D)Nitric oxide
14
Sound waves cannot travel in outer space because __________.
A)they are electromagnetic waves
B)they are mechanical waves
C)they cannot travel through a medium
D)the gas molecules in outer-space are too far apart
15
Electromagnetic waves are made by __________.
A)vibrating water molecules
B)strong compressions
C)vibrating air molecules
D)vibrating electrical charges
16
__________ is the number of vibrations that occur in 1 s.
A)Amplitude
B)Interference
C)Wavelength
D)Frequency
17
Waves that use matter to transfer energy are called __________ waves.
A)mass
B)electromagnetic
C)mechanical
D)medium
18
As frequency increases, wavelength __________.
A)decreases
B)remains constant
C)increases
D)becomes faster
19
The energy carried by an electromagnetic wave is called __________ energy.
A)thermal
B)mechanical
C)potential
D)radiant
20
Which of the following devices does NOT utilize radio waves?
A)cellular telephone
B)radar
C)television remote control
D)satellite
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