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Name: 
 

Practice Test 2B



Multiple Choice (2 Points each)
 

 1. 

A body at rest may have
A)
velocity
B)
momentum
C)
speed
D)
energy
 

 2. 

Pitch of a sound corresponds to its
A)
amplitude
B)
frequency
C)
period
D)
speed
 

 3. 

The color of light  depends on its
A)
wavelength
B)
intensity
C)
amplitude
D)
velocity
 

 4. 

If you warm your hand by holding them to one side of a flame, heat transfer is primarily by
A)
radiation
B)
convection
C)
vaporization
D)
conduction
 

 5. 

A red rose
A)
reflects all colors
B)
absorbs all colors but red
C)
absorbs red light
D)
refracts red light
 

 6. 

The temperature of a substance remains constant while it absorbs heat.  Which of the following best describes the substance?
A)
solide
B)
gas
C)
liquid
D)
substance undergoing a phase change
 

 7. 

Police radar uses the principle of
A)
Doppler effect
B)
interference
C)
resonance
D)
refraction
 

 8. 

If the speed of light through a liquid is measured at 2.4x108 m/s, what is the index of refraction of the liquid? (c = 3x108 m/s)
A)
1.33
B)
0.80
C)
1.25
D)
1.8
 

 9. 

In winter dark-colored clothes keep you warmer than light-colored clothes because
A)
light-colored clothes absorb all light and heat associated with it.
B)
light-colored clothes reflect all light and heat associated with it.
C)
dark-colored clothes reflect all light and heat associated with it.
D)
dark-colored clothes absorb all light and heat associated with it.
 

 10. 

A spectrum of colors seen on an oil slick on a wet street is primarily a result of
A)
interference
B)
diffraction
C)
scattering
D)
polarization
 

 11. 

The amplitude of the wave shown below is

mc011-1.jpg
A)
20 cm
B)
9 cm
C)
10 cm
D)
18 cm
 

 12. 

As the temperature of air increases, the velocity of sound waves in air
A)
decreases
B)
remain constant
C)
increases
D)
may increase or decrease
 

 13. 

Which of the following electromagnetic waves has the longest wavelength?
A)
radio waves
B)
blue light
C)
red light
D)
infrared
 



 
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