PHYSICS [1 Mark Question Answer]

Answer the following in a word or two or in a sentence.
What do you understand by magnetic force?

Answer the following in a word or two or in a sentence.
Name the force that is responsible for the falling of a stone from a height to the ground.

Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?

Answer the following in a word or two or in a sentence.
Which force is responsible for supporting the weight of a book placed on a table?

Answer the following in a word or two or in a sentence.
Give an example in which a force can change the direction of an object.

Solve the crossword puzzle.
Across
1. Type of force which depends upon the roughness of a surface
2. An effect of friction
3. The force of friction caused due to fluids
4. Type of friction acting between two bodies at rest
5. Type of friction which occurs when applied force overcomes static friction
6. A special body design to enable minimum drage Down

Give a reason for the following.
Brake handles of motorcycles are generally covered with a toweled cloth?

Give a reason for the following.
Boats and ships have streamlined shapes?

Answer the following in short.
List the various states of matter that offer frictional force?

Answer the following in short.
Why do wrestlers rub powder on their hands before getting into the ring?

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How can sliding friction be changed into rolling friction easily?

Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.

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Name the force responsible for opposing the motion between two bodies in contact.

Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?

Answer the following in a word or two or in a sentence.
A child tries to slide a wooden block on the top of a table, but she is unable to get a smooth movement. What material do you suggest she should use in between the block and the table to get a smooth movement?

Answer the following.
Define weight.

Answer the following.
What do you understand by a force?