NSO Level 1- Science Olympiad (SOF) Class 8: Questions 793 - 798 of 1076
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Question number: 793
Question
The effect of force is experienced only by contact with each other. This force is called
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Contact force |
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| b. | Frictional force |
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| c. | Muscular force |
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| d. | Gravitational force |
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Question number: 794
Question
The direction of gravity is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Upwards |
|
| b. | Northwards |
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| c. | Downwards |
|
| d. | Southwards |
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Question number: 795
Question
A force which can produce its effect only by making a contact with object is called
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Gravity |
|
| b. | Friction |
|
| c. | Muscular force |
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| d. | Contact force |
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Question number: 796
Question
Force may change the shape of objects. Which of the following is an example of this statement?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Hitting with a spoon on a steel plate |
|
| b. | Catching a cricket ball |
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| c. | Kicking a football |
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| d. | Hitting with hammer on an aluminium vessel |
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Question number: 797
» Friction
Question
In the figure the friction experienced on the wheels is called
Image of Rolling Friction
Image of Rolling friction
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rolling friction |
|
| b. | Static friction |
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| c. | Sliding friction |
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| d. | None of the above |
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Question number: 798
» Friction
Question
It is easy to use a crowbar to move a heavy log than to drag it by tying with a rope. The explanation of this statement is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Static friction is greater than sliding friction |
|
| b. | Static friction is less than rolling friction |
|
| c. | Sliding friction is greater than rolling friction |
|
| d. | Question does not provide sufficient data or is vague |
|