Waves_exam
Major Exam on Waves.
ACOS #12
- 1.
What is the main difference between electromagnetic waves and mechanical waves?
- A.
Mechanical waves require a medium and electromagnetic waves do not.
- B.
Electromagnetic waves only travel through space.
- C.
Mechanical waves only travel through space.
- D.
None of the above
Correct Answer
A. Mechanical waves require a medium and electromagnetic waves do not. -
- 2.
George is watching waves at the beach and notices that 10 waves go by every second. George is calculating ________.
- A.
Wavelength
- B.
Amplitude
- C.
Frequency
- D.
None of the above
Correct Answer
C. Frequency -
- 3.
In a longitudinal wave, energy travels ________________.
- A.
In the opposite direction of the disturbance
- B.
In the same direction as the disturbance
- C.
Perpendicular to the the disturbance
- D.
None of the above
Correct Answer
B. In the same direction as the disturbance -
- 4.
Water waves and waves made by moving a rope up and down are examples of ____________ ____________.
- A.
Transverse waves
- B.
EM waves
- C.
Longitudinal waves
- D.
None of the above
Correct Answer
A. Transverse waves -
- 5.
If you are measuring the height of a wave, you are measuring the wave's ______________.
- A.
Wavelength
- B.
Amplitude
- C.
Frequency
- D.
None of the above
Correct Answer
B. Amplitude -
- 6.
A wave has a frequency of 5 Hz and a wavelength of 5 meters. What is the speed of the wave?
- A.
1 m/s
- B.
10 m/s
- C.
25 m/s
- D.
The wave is not moving!
Correct Answer
C. 25 m/s -
- 7.
A transverse wave travels _____________
- A.
Perpendicular to the disturbance
- B.
Parallel to the disturbance
- C.
In the same direction as the disturbance
- D.
None of the above
Correct Answer
A. Perpendicular to the disturbance -
- 8.
The _____________ of a wave is the time it takes for a wave to make one complete cycle. (calculated by 1/f)
- A.
Frequency
- B.
Wavelength
- C.
Period
- D.
None of the above
Correct Answer
C. Period -
- 9.
A wave has a speed of 20 m/s and a frequency of 10 Hz. What is the wavelength?
- A.
200 m
- B.
2 m
- C.
10 m
- D.
30 m
Correct Answer
B. 2 m -
- 10.
The number of waves passing a given point in a certain time is called ______________.
- A.
Frequency
- B.
Wavelength
- C.
Amplitude
- D.
None of the above
Correct Answer
A. Frequency -
- 11.
What affects the pitch of a sound?
- A.
Wavelength
- B.
Amplitude
- C.
Frequency
- D.
None of the above
Correct Answer
C. Frequency -
- 12.
The science of sound is called _______________.
- A.
Acoustics
- B.
Harmonics
- C.
Frequency times wavelength
- D.
None of the above
Correct Answer
A. Acoustics -
- 13.
The bouncing back of a wave after it strkes a barrier is called __________ (like a mirror).
- A.
Diffraction
- B.
Reflection
- C.
Refraction
- D.
Interference
Correct Answer
B. Reflection -
- 14.
What EM waves have the lowest energy (least dangerous)?
- A.
Gamma rays
- B.
X-rays
- C.
UV waves
- D.
Radio waves
Correct Answer
D. Radio waves -
- 15.
The normal range of human hearing is _________________.
- A.
1-10 Hz
- B.
20-20,000 Hz
- C.
200-400 Hz
- D.
75-150,000 Hz
Correct Answer
B. 20-20,000 Hz -
- 16.
Which of the following is NOT a property of waves that affects the energy of a wave?
- A.
Wavelength
- B.
Frequency
- C.
Amplitude
- D.
Trough
Correct Answer
D. Trough -
- 17.
A 'mirage' is an example of which type of wave behavior?
- A.
Reflection
- B.
Constructive interference
- C.
Refraction
- D.
None of the above
Correct Answer
C. Refraction -
- 18.
Sound waves above 20,000 Hz are called _____________.
- A.
Ultrasound
- B.
Infrasound
- C.
Extrasound
- D.
None of the above
Correct Answer
A. Ultrasound -
- 19.
EM waves cannot travel through matter.
- A.
True
- B.
False
Correct Answer
B. False -
- 20.
A wave tranfers energy not matter.
- A.
True
- B.
False
Correct Answer
A. True -
- 21.
As frequency increases, wavelength decreases.
- A.
True
- B.
False
Correct Answer
A. True -
- 22.
The unit for frequency is called Hertz.
- A.
True
- B.
False
Correct Answer
A. True -
- 23.
The change in perceived pitch that occurs when the sound source or receiver are moving is called the Duplex Effect.
- A.
True
- B.
False
Correct Answer
B. False -
- 24.
A wave medium can be a solid, liquid, or a gas.
- A.
True
- B.
False
Correct Answer
A. True -
- 25.
What letter represents the TROUGH of the wave?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
D. D -
- 26.
What letter represents the CREST of the wave?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. A -
- 27.
What letter represents the AMPLITUDE of the wave?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
C. C -
- 28.
What letter represents the WAVELENGTH of the wave?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
B. B -
- 29.
What is the wave's AMPLITUDE in the above picture? (check units)
- A.
4 m
- B.
4 cm
- C.
8 m
- D.
8 cm
Correct Answer
B. 4 cm -
- 30.
What is the wave's FREQUENCY?
- A.
5 Hz
- B.
0.5 Hz
- C.
1 wave per second
- D.
None of the above
Correct Answer
B. 0.5 Hz -
- 31.
Which letter represents the waves with the highest energy?
- A.
G
- B.
C
- C.
A
- D.
E
Correct Answer
A. G -
- 32.
You drop a rock down a well and hear the splash in 0.50 seconds. How deep is the well?
- A.
5 meters
- B.
13.0 meters
- C.
170 meters
- D.
22 meters
Correct Answer
C. 170 meters -
- 33.
Lightening is seen 3,400 meters away. How long does it take to hear the thunder?
- A.
0.1 seconds
- B.
1.0 seconds
- C.
10.0 seconds
- D.
100 seconds
Correct Answer
C. 10.0 seconds -
- 34.
Radar waves with a 5 meter wavelength are sent out from a transmitter with a speed of 25 m/s. What is their frequency? What is the period?
- A.
F = 5 Hz, p = 10 seconds
- B.
F = 10 Hz, p = 5 seconds
- C.
F = 5 Hz, p = 0.2 seconds
- D.
None of the above
Correct Answer
C. F = 5 Hz, p = 0.2 seconds -
- 35.
A person you can see in the distance hits a metal object with a hammer. You hear the sound in 2.0 seconds. How far away is the person from you?
- A.
170 meters
- B.
342 meters
- C.
680 meters
- D.
1,000,000 meters
Correct Answer
C. 680 meters -
- 36.
What are the two major categories of waves?
- A.
Mechanical and electromagnetic
- B.
Mechanical and tranverse
- C.
Electromagnetic and longitudinal
- D.
All waves are electromagnetic
Correct Answer
A. Mechanical and electromagnetic -
- 37.
What are the two major types of waves?
- A.
Mechanical and electromagnetic
- B.
Longitudinal and transverse
- C.
Tranverse and electromagnetic
- D.
All waves are transverse
Correct Answer
B. Longitudinal and transverse -
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Mar 18, 2022Quiz Edited by
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Mar 03, 2009Quiz Created by
Chad.swims
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