AnswersPhysical ScienceWaves, Sound, and Light

Practice Test Answers

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Which of these most directly affects what happens to white light when it hits an object?

A
the distance of the object from the light
B
the properties of the object
C
the speed at which the light travels
D
the source of the light
4

Which situation would result in interference?

A
a wave increasing in energy as it hits another wave
B
a wave bouncing off an object
C
a wave bending as it moves through an object
D
a wave scattering as it moves through an object
5

Donna shines a flashlight and a laser pointer on a sheet of paper. She holds each device at an equal distance from the paper. How does the light hitting the paper from each device appear different?

A
The light from the laser pointer lights up a larger area of the paper.
B
The light from the flashlight magnifies a larger area of the paper.
C
The light from the laser pointer magnifies a larger area of the paper.
D
The light from the flashlight lights up a larger area of the paper.
6

Which best describes what happens if two waves meet and build on each other?

A
constructive interference
B
destructive interference
C
absorption
D
reflection
7

Which do sound waves travel fastest through?

A
gases
B
liquids
C
solids
D
mixtures
8

Noe is studying Wave A and Wave B. Wave A is rated at 100 dB, and Wave B is rated at 90 dB. Which statement can be made about the waves?

A
The intensity of both waves is the same.
B
The amplitude of both waves is the same.
C
Wave A is louder than Wave B.
D
Wave A has fewer decibels than Wave B.
9

Which process would correctly calculate the frequency of a wave?

A
dividing wavelength by period
B
dividing speed by wavelength
C
multiplying frequency by period
D
dividing frequency by wavelength
10

Which waves can travel through space?

A
mechanical waves only
B
longitudinal and electromagnetic waves
C
electromagnetic and mechanical waves
D
electromagnetic waves only
11

Which part of the electromagnetic spectrum is nearest to X-rays?

A
microwaves
B
infrared light
C
gamma rays
D
radio waves
12

Ingrid says that a red ball of clay appears red because the clay reflects red wavelengths. Simon says that the clay appears red because it allows red wavelengths to pass through it. Which statement best explains who is correct?

A
Simon is correct. The clay appears red because it allows red wavelengths to pass through it.
B
Simon is correct. The clay appears red because it is a solid.
C
Ingrid is correct. The clay appears red because it is a type of matter.
D
Ingrid is correct. The clay appears red because it reflects red wavelengths.
13

Which conditions produce low pitches from a guitar string?

A
short strings, more tension, thick strings
B
long strings, less tension, thick strings
C
long strings, more tension, thin strings
D
short strings, less tension, thin strings
14

The lens in the eyepiece of a reflecting telescope breaks. How will this most affect the function of the telescope?

A
Light rays will not be sent to the eyepiece.
B
Magnified images will not be created.
C
Magnified images will appear upside down.
D
Light from distant objects will not be captured.

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