Tennessee Science Grade 7

Chapter 15: Waves

Waves

1
Why can't you see your reflection in a brick wall?
A)Light rays are reflected in many directions from the uneven surface.
B)No light is reflected from a brick wall.
C)Light rays are reflected in only one direction from the rough surface.
D)Reflection of light from a rough surface is regular reflection.
2
Reflection occurs when a wave __________.
A)strikes an object and bounces off of it
B)compresses air particles as it travels
C)causes ripples in a pool of water
D)bends and changes speeds as it travels
3
What is the region of a compressional wave where particles are far apart called?
A)rarefaction
B)crest
C)rest position
D)trough
4
The process in which two waves overlap and form a new wave is called __________.
A)refraction
B)wave joining
C)diffraction
D)interference
5
The bending of a light wave as it moves from one medium into another is called __________.
A)reflection
B)refraction
C)diffraction grating
D)interference
6
The __________ of a wave is how many wavelengths pass a fixed point each second.
A)velocity
B)frequency
C)compression speed
D)amplitude
7
In __________ waves, matter in the medium moves back and forth at right angles to the direction the wave travels.
A)compressional
B)light
C)transverse
D)sound
8
__________ occurs when the crest of one wave overlaps the crest of another wave.
A)Rarefaction
B)Constructive interference
C)Diffraction
D)Destructive interference
9
A __________ is a repeating disturbance that transfers energy through matter or open space.
A)wave
B)conductor
C)medium
D)frequency
10
__________ is the distance from the top of one crest of a transverse wave to the top of the next crest in that wave.
A)Wavelength
B)Amplitude
C)Frequency
D)Wave velocity
11
Waves that use matter to transfer energy are called __________ waves.
A)mechanical
B)electromagnetic
C)medium
D)mass
12
Sound waves are __________ waves.
A)radio
B)molecular
C)compressional
D)transverse
13
In __________ waves, matter in the medium moves forward and backward in the same direction the wave travels.
A)ocean
B)radio
C)compressional
D)transverse
14
__________ occurs when the crest of one wave overlaps the trough of another wave.
A)Wave cancellation
B)Destructive interference
C)Amplitude shift interference
D)Constructive interference
15
Which of the following will travel faster through water than through air?
A)red visible light
B)infared radiation
C)thunder
D)blue visible light
16
Sound waves cannot travel in outer space because __________.
A)they are mechanical waves
B)they cannot travel through a medium
C)they are electromagnetic waves
D)the gas molecules in outer space air are too far apart
17
The __________ of an electromagnetic light wave determines the color of the light.
A)compression speed
B)amplitude
C)pitch
D)frequency
18
Which of the following does a transverse wave have?
A)compressions
B)ability to travel through space
C)amplitude
D)rarefactions
19
__________ is a measure of the energy in a wave.
A)Wavelength
B)Amplitude
C)Wave velocity
D)Frequency
20
The matter through which a mechanical wave travels is called a __________.
A)conductor
B)substrate
C)medium
D)wave relay
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.