Indiana Science Grade 7

Chapter 14: Waves, Sound, and Light

Light

1.
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.
2.
Which of the following has the shortest wavelength?
A)X rays
B)ultraviolet waves
C)infrared waves
D)radio waves
3.
The shape of the _______ changes when you focus on nearby and distant objects.
A)lens
B)cornea
C)retina
D)optic nerve
4.
Light waves are _______ waves.
A)electromagnetic
B)sound
C)compressional
D)energy
5.
All warm bodies emit _______ waves.
A)infrared
B)radio
C)light
D)ultraviolet
6.
What determines the intensity of light waves?
A)energy
B)frequency
C)direction
D)pitch
7.
The electromagnetic spectrum is the complete range of electromagnetic wave frequencies and _______.
A)wavelengths
B)directions
C)angles
D)colors
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