Waves Unit Test
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Question
Use the diagram to complete the statement.
An illustration shows the propagation of two waves for a period of one second. The first wave has a lower number of cycles than the second wave, but both the waves travel an equal horizontal distance in one second.
The bottom wave has a greater _____
(1 point)
1.The bottom wave has a greater _____
Responses
trough.
amplitude
frequency... Answer
wavelength.
2. Which type of wave can carry energy through a vacuum?
Responses
seismic
electromagnetic ... Answer
sound
mechanical
3.Use the table to answer the question.
Wave Wavelength (meters) Frequency (hertz)
W 5 200
X 3 300
The table shows information about two waves. Based on the given information, which conclusion can be made?
Responses
Wave W has a faster speed... Answer
Wave X has a greater amplitude.
Wave W has a greater amplitude.
Wave X has a faster speed.
4. A student drops a rock in a pond and notices that her reflection in the water becomes less clear. Which statement best explains the student’s observation?
Responses
The surface of the water is not shiny after the rock is dropped in the pond.
The water is not a smooth surface after the rock is dropped in the pond.
... Answer ^
The water is not able to reflect waves after the rock is dropped in the pond.
The surface of the water is no longer hard after the rock is dropped in the pond.
5. A room with which type of surface will most likely produce an echo?
Responses
carpet
glass ... Answer
dirt
foam
6. A builder wants to make a room soundproof in a new home. The builder should use materials that _____.
Responses
reflect sound waves and prevent echoes
reflect sound waves and create echoes
absorb sound waves and prevent echoes ...Answer
absorb sound waves and create echoes
7.A student puts a piece of black paper and a piece of white paper in the same sunny spot. After 30 minutes, she observes that the black paper feels warmer than the white paper. Which best explains the student’s observation?
Responses
The black paper prevents waves from the sun from reaching the white paper.
The black paper reflects more waves from the sun than the white paper.
The black paper receives stronger waves from the sun than the white paper.
The black paper absorbs more waves from the sun than the white paper. .
answer ^
8.During a baseball game, the sound of the bat hitting the ball can be heard in most parts of the stadium. That sound is weaker at greater distances. What is the cause of this phenomenon?
Responses
The sound waves are spread out over a large area. .. Answer
The sound waves slow down as they move away from the bat.
The sound waves are blocked by people in the stadium.
The sound waves can only travel through certain materials.
9.Which type of wave can travel through a vacuum?
Responses
seismic
mechanical
sound
light ... Answer
10.AM waves have a wavelength of approximately 100 meters. FM waves have a wavelength of approximately 1 meter. Which one has a higher frequency? Which one has higher energy?
Responses
FM has a higher frequency, but AM is higher energy.
AM has a higher frequency, but FM is higher energy.
FM has a higher frequency and higher energy... Answer
AM has a higher frequency and higher energy.
11.Why would a person feel cooler wearing a white shirt rather than a black shirt on a sunny day?
Responses
Light would be mostly absorbed or reflected rather than transmitted.
Light would be mostly absorbed or transmitted rather than reflected.
Light would be mostly transmitted rather than absorbed or reflected.
Light would be mostly reflected rather than absorbed or transmitted... ANSWER