Class 8 Science Chapter 11 Force and Pressure Questions And Answers 2023

Class 8 Science Chapter 11 Force and Pressure Questions And Answers 2023 Two Examples of situations in which you PULL to change the state of motion of objects. - ANS-a) In order to open a drawer, we have to pull it. This action changes the state of motion of the drawer. b) To draw water from the well, the rope is pulled. This action changes the state of motion of the bucket. Two Examples of situations in which you PUSH to change the state of motion of objects. - ANS-a) A football is pushed by the foot of a player. This action changes the state of motion of the ball. b) In order to change the place of the heavy box from one room to another, we have to push it. This action changes the motion of the box. Give two examples of situations in which applied force causes a change in the shape of an object. - ANS-The forces which change the shape of an object are as follows: i) By pressing the clay between the hands, it deforms. ii) The shape of the plastic bottle changes by squeezing it. To draw water from a well we have to __________ at the rope. - ANS-pull A charged body ---------an uncharged body towards it. - ANS-attracts To move a loaded trolley we have to -------- it. - ANS-pull or push The north pole of a magnet __________the north pole of another magnet. - ANS-repels (a) To stretch the bow, the archer applies a force that causes a change in its __________. - ANS-shape The force applied by the archer to stretch the bow is an example of __________ force. - ANS-muscular The type of force responsible for a change in the state of motion of the arrow is an example of a -------force. - ANS-contact While the arrow moves towards its target, the forces acting on it are due to __________ and that due to __________ of air - ANS-gravity,Friction State the effect of the force in Squeezing a piece of lemon between the fingers to extract its juice. - ANS- CONTINUES...