science
Grade-4-
Easy
Question
The amplitude of a sound wave represents its ________.
- Loudness
- Pitch
- Speed
- None of these
Hint:
The meaning of the word is a lot of noise.
The correct answer is: Loudness
- Pitch of a sound wave represents its frequency.
- The amplitude of a sound wave represents its loudness.
- So, the correct option is a.
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The frequency of a sound wave represents its ________.
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When we throw a stone in a pond _________ is/are generated.
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The _______ of a wave shows how many waves pass a certain point in one second.
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Which points represent the rarefactions in the graphical wave representation shown?
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Match the following:
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| b | Hertz | ii | Amplitude |
| c | Wavelength | iii | No. of vibrations |
PhysicsGrade-7
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Which of the following is a consequence of longitudinal waves propagating through a medium?
Which of the following is a consequence of longitudinal waves propagating through a medium?
PhysicsGrade-7
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The wavelength of the wave shown below is ____ mm.
The wavelength of the wave shown below is ____ mm.
PhysicsGrade-7
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Match the following:
Match the following:
PhysicsGrade-7
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Which of the following diagrams shows one complete oscillation inside the red box?
Which of the following diagrams shows one complete oscillation inside the red box?
PhysicsGrade-7
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The propagation of waves can be graphically represented by plotting _____ against _____.
The propagation of waves can be graphically represented by plotting _____ against _____.
PhysicsGrade-7
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A peak is called a ____ and a valley is called a ____ of a wave.
A peak is called a ____ and a valley is called a ____ of a wave.
PhysicsGrade-7
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What does the length of the red line represent in the picture of the wave shown below?
What does the length of the red line represent in the picture of the wave shown below?
PhysicsGrade-7
