Waves Unit Test
1 of 141 of 14 Items
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
Can u do all 14?
the one that says "answer" is the correct answer.
bruhhhhhhhhhhh
yulyum is right
frequency
Real one fr did u take it
what are the typed responces
Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum.
If the wavelength of the wave increases to 10m while the speed remains 600 m/s, the frequency of the wave will decrease.
I apologize for the confusion. As an AI language model, I do not have access to your test questions or answers. I misunderstood your request earlier. Please provide me with the correct test questions and I will try my best to provide you with the accurate answers.
How are sound waves different from light waves?
Sound waves are mechanical waves that can travel through a medium or through a vacuum, while light waves are electromagnetic waves that can only travel through a medium.
Sound waves are mechanical waves that can travel through a medium or through a vacuum, while light waves are electromagnetic waves that can only travel through a medium.
Sound waves are electromagnetic waves that can only travel through a medium, while light waves are mechanical waves that can travel through a medium or through a vacuum.
Sound waves are electromagnetic waves that can only travel through a medium, while light waves are mechanical waves that can travel through a medium or through a vacuum.
Sound waves are electromagnetic waves that can travel through a medium or through a vacuum, while light waves are mechanical waves that can only travel through a medium.
Sound waves are electromagnetic waves that can travel through a medium or through a vacuum, while light waves are mechanical waves that can only travel through a medium.
Sound waves are mechanical waves that can only travel through a medium, while light waves are electromagnetic waves that can travel through a medium or through a vacuum.
Sound waves are mechanical waves that can only travel through a medium, while light waves are electromagnetic waves that can travel through a medium or through a vacuum.
Sound waves are mechanical waves that can only travel through a medium, while light waves are electromagnetic waves that can travel through a medium or through a vacuum.
How are visible light, the electromagnetic spectrum, and photoreceptors in the eye related?
Photoreceptors in the eye detect the electromagnetic spectrum, which contains a range known as visible light.
Photoreceptors in the eye detect the electromagnetic spectrum, which contains a range known as visible light.
Photoreceptors in the eye detect visible light, which contains a range known as the electromagnetic spectrum.
Photoreceptors in the eye detect visible light, which contains a range known as the electromagnetic spectrum.
Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum.
Photoreceptors in the eye detect visible light, which is part of the wider electromagnetic spectrum.
Photoreceptors in the eye detect the electromagnetic spectrum, which is part of the wider visible light range
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?
The water is not a smooth surface after the rock is dropped in the pond.
The water is not a smooth surface after the rock is dropped in the pond.
The water is not able to reflect waves after the rock is dropped in the pond.
The water is not able to reflect waves after the rock is dropped in the pond.
The surface of the water is not shiny after the rock is dropped in the pond.
The surface of the water is not shiny 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.
The water is not a smooth surface after the rock is dropped in the pond.
A room with which type of surface will most likely produce an echo?
carpet
glass
dirt
foam
Glass.
A builder wants to make a room soundproof in a new home. The builder should use materials that _____.
reflect sound waves and create echoes
reflect sound waves and prevent echoes
absorb sound waves and prevent echoes
absorb sound waves and create echoes
Absorb sound waves and prevent echoes.
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?
The black paper prevents waves from the sun from reaching the white paper.
The black paper prevents waves from the sun from reaching the white paper.
The black paper receives stronger waves from the sun than the white paper.
The black paper receives stronger waves from the sun than the white paper.
The black paper reflects more waves from the sun than the white paper.
The black paper reflects more waves from the sun than the white paper.
The black paper absorbs more waves from the sun than the white paper.
The black paper absorbs more waves from the sun than the white paper.
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?
The sound waves are blocked by people in the stadium.
The sound waves can only travel through certain materials.
The sound waves are spread out over a large area.
The sound waves slow down as they move away from the bat.
The sound waves are spread out over a large area.
Which type of wave can travel through a vacuum?
mechanical
sound
seismic
light
Light waves can travel through a vacuum.
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?
FM has a higher frequency, but AM is higher energy.
FM has a higher frequency, but AM is higher energy.
AM has a higher frequency and higher energy.
AM has a higher frequency and higher energy.
FM has a higher frequency and higher energy.
FM has a higher frequency and higher energy.
The formula vw=f⋅λ
describes the relationship between the speed of a wave (vw
), and its frequency (f
) and wavelength (λ
).
For example, if a wave has a frequency of 120 Hz and a wavelength of 5m, it would have a speed of 600 m/s.
In one or two sentences, describe what would happen to the frequency of this wave if the wavelength is increased to 10m but the speed stays the same at 600 m/s.
A student performs an experiment by ringing a bell in the air and in a pool and measuring the time it takes for a friend to hear the bell. In one or two sentences, make and justify a hypothesis on which medium the friend would hear the bell the fastest.
The friend would hear the bell faster in air than in water because air is a less dense medium than water which allows sound waves to travel faster in air with less resistance.
Red tape can be used to repair a broken taillight on a car. In one or two sentences, explain how different colors of light are transmitted, reflected, and absorbed by this kind of tape.(2 points)
Different colors of light are transmitted, reflected, and absorbed differently by red tape. Red light is transmitted through the tape, while other colors of light are absorbed by it. The tape reflects some of the light back and passes the rest through.
You want to make a photo album for your friend. In three to five sentences, describe at least one advantage and one disadvantage of choosing a digital photo album rather than a physical one. Analyze a potential solution to the disadvantage.(4 points)
One advantage of choosing a digital photo album is that it allows the storage of a large number of photos in a small space, making them easy to access and share with others. However, one disadvantage of choosing a digital photo album is that it can be easily damaged or lost due to technical glitches or hardware failure. A potential solution to this disadvantage can be to make multiple digital copies of the photo album and store them in different secure locations. It is also advisable to save the album on external hard drives or cloud storage to ensure its safety.
i will give the answers when im done taking the test since no one else will give them 👍
i need answers 😭
1.-frequency
2. electromagnetic
3. Wave W has a faster speed.
4. The water is not a smooth surface after the rock is dropped in the pond.
5. glass
6. absorb sound waves and prevent echoes
7. The black paper absorbs more waves from the sun than the white paper.
8. The sound waves are spread out over a large area.
9. light
10. FM has a higher frequency and higher energy.
11. Light would be mostly reflected rather than absorbed or transmitted.