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NCERT Solutions For Class 8 Science Chapter 11 Force and Pressure: In Class 8, you've probably noticed those stickers saying "push" and "pull" on doors in various places. When we push or pull, we're essentially applying a force that causes the door to move either forward or backwards. These actions involve the fundamental concepts of force and how it influences the motion of an object in a specific direction.
In this chapter, "Force and Pressure," which is part of the NCERT Solutions for Class 8, we look into different types of forces and the concept of pressure. There are a total of 13 questions are explained comprehensively in the CBSE NCERT solutions for Class 8 Science Chapter 11: Force and Pressure. Importantly, all these 13 questions presented are rooted in real-life examples. As you study this force and pressure class 8 solutions, take a moment to observe the various types of forces that exist in your surroundings.
These NCERT solutions for Class 8 Science Chapter 11: Force and Pressure serve as invaluable tools to gauge your understanding of the chapter's concepts. When working on force and pressure class 8 NCERT solutions, it's a good practice to initially attempt them on your own and then refer to the solutions for further clarity.
By understanding this class 8 science chapter 11 question answer, you not only enhance your knowledge of forces and pressure but also increase your chances of scoring well in your examinations. So, solve these force and pressure class 8 question answers, explore the dynamics of pressure, and take full advantage of these class 8 science chapter 11 NCERT solutions to excel in your studies.
This chapter has been renumbered as Chapter 8 in accordance with the CBSE Syllabus 2024–25.
Answer:
Two examples of the situation in which the state of motion of an object is changed through a push are as follows:
(a) A table whose position in a room has to be changed is moved by pushing it.
(b) In a match of cricket, the batsman hits the ball by pushing it with a bat.
Two examples of the situation in which the state of motion of an object is changed through a pull are as follows:
(a) In a game of tug of war, both teams try to bring the rope towards their side by pulling it.
(b) A train moves when the engine pulls the rest of the bogies.
Q2. Give two examples of situations in which applied force causes a change in the shape of an object.
Answer:
Two examples of situations in which applied force causes a change in the shape of an object are as follows:
(a) The shape of a rubber band changes (it stretches) once it is pulled from both ends.
(b) The shape of dough is changed before making it into a roti.
Q3. Fill in the blanks in the following statements.
Answer:
(a) To draw water from a well we have to pull at the rope.
(b) A charged body attracts an uncharged body towards it.
(c) To move a loaded trolley we have to either pull or push it.
(d) The north pole of a magnet repels the north pole of another magnet.
muscular, contact, non-contact, gravity, friction, shape, attraction
Answer:
a) To stretch the bow, the archer applies a force that causes a change in its shape .
(b) The force applied by the archer to stretch the bow is an example of muscular force.
(c) The type of force responsible for a change in the state of motion of the arrow is an example of a contact force.
(d) While the arrow moves towards its target, the forces acting on it are due to gravity and that due to the friction of air.
(a) Squeezing a piece of lemon between the fingers to extract its juice.
Answer:
The fingers exert muscular force on the lemon . As an effect of this force, the lemon gets squeezed .
(b) Taking out paste from a toothpaste tube.
Answer:
We use our fingers to apply muscular force on the toothpaste tube . This applied muscular force changes the shape of the tube causing the toothpaste to come out of it.
(c) A load suspended from a spring while its other end is on a hook fixed to a wall.
Answer:
The load pulls the spring . As an effect of this pull, the spring stretches .
(d) An athlete making a high jump to clear the bar at a certain height.
Answer:
The athlete pushes the ground using muscular force. This causes the athlete to rise in the air.
Answer:
While hammering a hot piece the blacksmith applies force on it using the hammer thus causing a change in the shape of the piece of iron. For example, the blacksmith can make a cylindrical block of iron to rectangular block by heating it and hammering.
Answer:
On rubbing the balloon against a piece of synthetic cloth the balloon gains charge . The wall is uncharged and is attracted by the charged balloon since a charged body attracts an uncharged body . The electrostatic force is responsible for the attraction between the balloon and the wall.
Answer:
The forces acting on the bucket are muscular force applied by our hand and gravitational force. The forces acting do not bring a change in the state of the motion as the forces are equal in magnitude and act in the opposite direction.
Answer:
Two forces acting on the rocket are the gravitational force and friction of the air in the atmosphere. The gravitational force pulls the rocket towards the earth and the friction force also opposes the motion of the rocket.
(a) the pressure of water.
(b) the gravity of the earth.
(c) the shape of a rubber bulb.
(d) atmospheric pressure.
Answer:
The rise of water in the dropper is due to atmospheric pressure. The atmospheric pressure is more than the pressure inside the dropper thus pushing the water inside it.
The experts at Careers360 have created easy-to-understand class 8 science chapter 11 question answer. These solutions are available in the form of a PDF, making it convenient for students to access and utilize them. The Solution of class 8 chapter 11 science consists of a total of thirteen questions, which are a mix of straightforward question-answer and fill-in-the-blanks types. These solutions can aid students in their exam preparation and ensure that they have a clear understanding of the concepts covered in the chapter. Additionally, practising force and pressure class 8 questions answers can help students identify their strengths and weaknesses in the subject and focus on improving their performance.
Chapter 1 | Crop Production and Management |
Chapter 2 | Microorganisms Friend and Foe In Microorganisms |
Chapter 3 | Synthetic Fibres and Plastics |
Chapter 4 | Materials Metals and Non Metals |
Chapter 5 | Coal and Petroleum |
Chapter 6 | Combustion and Flame |
Chapter 7 | Conservation of Plants and Animals |
Chapter 8 | Cell Structure and Functions |
Chapter 9 | Reproduction in Animals |
Chapter 10 | Reaching the Age of Adolescence |
Chapter 11 | Force and Pressure |
Chapter 12 | Friction |
Chapter 13 | Sound |
Chapter 14 | Chemical Effects Of Electric Current |
Chapter 15 | Some Natural Phenomena |
Chapter 16 | Light |
Chapter 17 | Stars and the Solar System |
Chapter 18 | Pollution of Air and Water |
A force is a push or pull on an object.
Forces can change the state of rest or motion of an object.
The SI unit of force is the Newton (N).
Forces can change the shape, size, or speed of an object.
Forces can also change the direction of motion.
Force = mass × acceleration
Pressure is the force applied per unit area.
Pressure (P) = Force (F) / Area (A)
Where: P is in pascals (Pa), F is in Newtons (N), and A is in square meters (m²)
Archimedes' principle states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. This principle explains why objects float or sink in fluids.
Subtopics of the chapter 11 class 8 science are given below:
11.1. Force – A Push or Pull
11.2. Forces are due to an Interaction
11.3. Exploring Forces
11.4. A Force can Change the State of Motion
11.5. Force can Change the Shape of an Object
11.6. Contact Forces
11.7. Non-contact Forces
11.8. Pressure
11.9. Pressure Exerted by Liquids and Gases
11.10. Atmospheric Pressure
The questions explained in the NCERT solutions for class 8 science chapter 11 force and pressure are based on the following points.
There are so many interesting examples and situations that are given in the NCERT book grade eight-chapter 11. You can do all the activities given in the NCERT book and it will be a fun and a learning experience. CBSE NCERT solutions for class 8 science chapter 11 force and pressure helps students in solving homework problems also.
Comprehensive Coverage: Force and pressure class 8 solutions provides comprehensive coverage of various concepts related to force and pressure. It addresses a wide range of topics, ensuring a thorough understanding of the chapter.
Real-Life Examples: Many questions in this force and pressure class 8 ncert solutions are framed using real-life examples. This approach helps students connect theoretical concepts with practical situations, making learning more engaging and relatable.
Conceptual Clarity: The class 8 science chapter 11 ncert solutions are designed to test the student's understanding of fundamental concepts related to force and pressure. They encourage students to think critically and apply their knowledge to solve problems.
Variety of Question Types: The class 8 force and pressure ncert solutions section includes a variety of question types, such as multiple-choice questions, short answer questions, long answer questions, and numerical problems. This diversity allows students to practice different problem-solving techniques.
Application-Based Questions: Some questions require students to apply their knowledge of force and pressure to real-world scenarios. This helps students see the practical implications of the concepts they are learning.
Step-by-Step Solutions: For numerical problems and complex questions, step-by-step force and pressure class 8 questions and answers are often provided. These solutions guide students through the problem-solving process, helping them understand the methodology.
Assessment and Practice: The science chapter 11 class 8 questions serve as a valuable tool for self-assessment and practice. Students can gauge their understanding of the chapter by attempting these questions and then referring to the answers to check their accuracy.
Exam-Orientation: Many questions are framed with a focus on exam preparation. By practising these ch 11 science class 8 questions, students can become better prepared for their Class 8 Science exams
Also Check NCERT Books and NCERT Syllabus here:
Yes, force and pressure are important topics of NCERT Class 9 Syllabus. These are basic concepts in mechanics that will be studied in Class 11 Physics book
Pressure is defined as force per unit area. If F is the force and A is the area, then pressure P=F/A
The SI unit of force is Newton(N)
The SI unit of pressure is Pascal(Pa)
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