Ps Unit 7 Test
- 1.____ are used for medical imaging.
- A.
Gamma rays
- B.
Infrared waves
- C.
X-rays
- D.
Radio waves
- 2.An ocean wave has a frequency of 2.5 Hz with a wavelength of 10 m. What is the velocity of the wave?
- A.
25 m/s
- B.
.25 m/s
- C.
4 m/s
- D.
.25 m
- 3.Energy (in scientific terms) is defined as ______________.
- A.
Moving an object a certain distance
- B.
The force exerted on an object
- C.
The ability to do work
- D.
The side effect of drinking a red bull
- 4.The highest pitch humans can hear has a wavelength of 0.02 m in air and a speed of 340 m/s. What is the frequency of this sound wave?
- A.
17000 Hz
- B.
6.8 HZ
- C.
.000588 Hz
- D.
170 Hz
- 5.
![Using figure 7.1, what is the highest point on the wave called? - ProProfs]( "Using figure 7.1, what is the highest point on the wave called?")
Using figure 7.1, what is the highest point on the wave called?- A.
Crest
- B.
Trough
- C.
Rarefaction
- D.
Compression
- 6.The electromagnetic waves interacting with the water molecules in your food to make it hot are ____.
- A.
Microwaves
- B.
X-rays
- C.
Gamma rays
- D.
Ultraviolet rays
- 7.
![What type of wave is shown in figure 7.1? - ProProfs]( "What type of wave is shown in figure 7.1?")
What type of wave is shown in figure 7.1?- A.
Longitudinal
- B.
Compressional
- C.
Transverse
- D.
Tsunami
- 8.
![Using figure 7.1, what is the minimum point on the wave called? - ProProfs]( "Using figure 7.1, what is the minimum point on the wave called?")
Using figure 7.1, what is the minimum point on the wave called?- A.
Crest
- B.
Trough
- C.
Rarefaction
- D.
Compression
- 9.A circuit that has two or more separate loops for the current go through is a ____.
- A.
Parallel circuit
- B.
Series circuit
- C.
Circuit diagram
- D.
Electron circuit
- 10.The electromagnetic waves with wavelengths slightly longer than visible light are ____.
- A.
X-rays
- B.
Microwaves
- C.
Infrared waves
- D.
Radio waves
- 11.A wave has a speed of 250 m/s and frequency of 25 Hz. What is the wavelength?
- A.
10.0 m
- B.
10.0 Hz
- C.
.10 m
- D.
.10 Hz
- 12.For a given wave, if the frequency increases, the wavelength ____.
- A.
Increases
- B.
Decreases
- C.
Stays the same
- D.
Does not exist
- 13.The electromagnetic waves that come from the sun and tanning beds (which can cause skin cancer) are ____.
- A.
Radio waves
- B.
Microwaves
- C.
Infrared waves
- D.
Ultraviolet rays
- 14.Electromagnetic waves ____.
- A.
Are compressional waves
- B.
Are transverse waves
- C.
Must have a medium
- D.
Are generated by static electricity
- 15.Electromagnetic radiation with the shortest wavelengths is ____.
- A.
Gamma rays
- B.
Visible light
- C.
Radio waves
- D.
Infrared waves
- 16.Sound travels faster in ____ than in water.
- A.
Air
- B.
Steel
- C.
Cork
- D.
Water vapor
- 17.The unit used to measure frequency is the ____.
- A.
Newton
- B.
Joule
- C.
Decibel
- D.
Hertz
- 18.Waves in which the particles of the medium move only perpendicular to the motion of the wave are ____ waves.
- A.
Transverse
- B.
Compressional
- C.
Uniform
- D.
Light
- 19.Electromagnetic radiation with the longest wavelengths is ____.
- A.
Gamma rays
- B.
Visible light
- C.
Radio waves
- D.
Infrared waves
- 20.Wave A carries more energy than wave B. Wave B has a smaller ____ than wave A.
- A.
Frequency
- B.
Wavelength
- C.
Speed
- D.
Amplitude
- 21.A wave will travel only as long as it has ____ to carry.
- A.
Energy
- B.
Mass
- C.
Amplitude
- D.
Matter
- 22.Waves in which the particles of the medium move only in the same direction as the motion of the wave are ____ waves.
- A.
Transverse
- B.
Compressional
- C.
Uniform
- D.
Light
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