CBSE Class 8 Science Force and Pressure

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CBSE Class 8 Science Force and Pressure. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.

FORCE AND PRESSURE

Q1. What is force? State the various effects of force.

Ans. A push or pull on an object is called force.

Effects of force:

(i) Force can change the speed of a moving object.

(ii) Force can change the direction of a moving object.

(iii) Force can change the shape of an object.

Q2. Give one example where force can changes the

(a) Speed of a moving object

(b) Direction of a moving object.

© the shape of an object.

Ans. (a) The force applied by a hockey player on a moving ball changes the speed of ball.

(b) The force applied by a batsman changes the direction of moving cricket ball.

© Force applied on a spring can change its shape.

Q3. Identify the actions involved in the following situations as push or pull, or both:

(a) Opening a drawer.

(b) Moving a loaded cart.

© A cricket ball hit by a batsman.

(d) Drawing a bucket of water from a well.

Ans. (a) Pull. (b) Push; Pull. © Push (d) Pull

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