ESS
Grade-8
Easy
Question
___________is a renewable resource.
- Water
- Coal
- Natural gas
- Petroleum
Hint:
Water is a renewable natural resource.
The correct answer is: Water
- Natural resources are of two types that are renewable and nonrenewable.
- Renewable resources can be replaced rapidly by natural resources.
- Water is a good example of a renewable natural resource.
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Coal is a __________.
Coal is a __________.
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The basic needs of human being are________________.
The basic needs of human being are________________.
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Sound is generated when an object ____ and is propagated when it is in a ____.
Sound is generated when an object ____ and is propagated when it is in a ____.
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Rarefactions are the regions where the ____ is low.
Rarefactions are the regions where the ____ is low.
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The particles of the medium do not actually move to carry the sound wave from one place to another. They simply vibrate about their equilibrium positions. This statement is ____.
The particles of the medium do not actually move to carry the sound wave from one place to another. They simply vibrate about their equilibrium positions. This statement is ____.
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Propagation of sound can be visualized as the propagation of ____ variations.
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In the options given below, if ‘C’ means compression and ‘R’ means rarefaction figure out which of the patterns represent the pattern of particles of the medium through which sound propagates.
In the options given below, if ‘C’ means compression and ‘R’ means rarefaction figure out which of the patterns represent the pattern of particles of the medium through which sound propagates.
PhysicsGrade-8
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The particles of the medium move from the origin of sound to the destination to carry it. This statement is ____.
The particles of the medium move from the origin of sound to the destination to carry it. This statement is ____.
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Sound waves are produced from an object which ____.
Sound waves are produced from an object which ____.
PhysicsGrade-8
