Indiana Science Grade 7

Chapter 14: Waves, Sound, and Light

Waves, Sound, and Light

1.
The distance between one point on a wave and the nearest point moving with the same speed and direction is the _______.
A)wavelength
B)frequency
C)intensity
D)pitch
2.
The _______ of a wave is the number of wavelengths that pass by a point each second.
A)frequency
B)wavelength
C)pitch
D)intensity
3.
_______ is the bending of waves around an object.
A)Diffraction
B)Frequency
C)Intensity
D)Pitch
4.
Which of the following are units for measuring frequency?
A)hertz
B)decibels
C)meters
D)meters/second
5.
A _______ wave causes particles in matter to move back and forth along the same direction in which the wave travels.
A)compressional
B)transverse
C)seismic
D)radio
6.
The _______ of a transverse wave depends on the height of the crests or the depth of the troughs.
A)amplitude
B)frequency
C)pitch
D)intensity
7.
The speed of a wave equals its wavelength multiplied by its _______.
A)frequency
B)amplitude
C)intensity
D)crest
8.
Which of the following best describes why refraction of a wave occurs when the wave travels from one material into another?
A)The speed of the wave changes.
B)The wavelength increases.
C)The amplitude increases.
D)The frequency decreases.
9.
The amount of energy that a wave carries past a certain area each second is the ______.
A)intensity
B)pitch
C)amplitude
D)frequency
10.
Which of the following are units for measuring intensity?
A)decibels
B)hertz
C)meters/second
D)meters
11.
Through which of these materials does sound travel fastest?
A)water
B)air
C)steel
D)empty space
12.
The speed of sound waves depends on the material in which the waves travel and its _______.
A)temperature
B)frequency
C)pitch
D)refraction
13.
_______ is the repeated echoes of sound waves.
A)Reverberation
B)Refraction
C)Frequency
D)Reflection
14.
How does temperature affect the speed of sound through a material?
A)The speed of sound increases as the temperature increases.
B)The speed of sound decreases as the temperature increases.
C)The speed of sound is not influenced by the temperature.
D)The speed of sound increases as the temperature decreases.
15.
Which of the following has the shortest wavelength?
A)X rays
B)ultraviolet waves
C)infrared waves
D)radio waves
16.
The shape of the _______ changes when you focus on nearby and distant objects.
A)lens
B)cornea
C)retina
D)optic nerve
17.
Light waves are _______ waves.
A)electromagnetic
B)sound
C)compressional
D)energy
18.
All warm bodies emit _______ waves.
A)infrared
B)radio
C)light
D)ultraviolet
19.
What determines the intensity of light waves?
A)energy
B)frequency
C)direction
D)pitch
20.
The electromagnetic spectrum is the complete range of electromagnetic wave frequencies and _______.
A)wavelengths
B)directions
C)angles
D)colors
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