New York Science Grade 7

Section 2: Sound Waves

Section Quizzes - English

1
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.
2
The amount of energy that a wave carries past a certain area each second is the ______.
A)intensity
B)pitch
C)amplitude
D)frequency
3
Which of the following are units for measuring intensity?
A)decibels
B)hertz
C)meters/second
D)meters
4
Through which of these materials does sound travel fastest?
A)water
B)air
C)steel
D)empty space
5
The speed of sound waves depends on the material in which the waves travel and its _______.
A)temperature
B)frequency
C)pitch
D)refraction
6
_______ is the repeated echoes of sound waves.
A)Reverberation
B)Refraction
C)Frequency
D)Reflection
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

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