Class 8 Science: Advanced Force and Pressure
This worksheet challenges students to apply their understanding of force, pressure, and related concepts in various scenarios. It covers topics like atmospheric pressure, fluid pressure, and the effects of force.
Class 8CBSESciencehardPractice
Preview · 10 questions
- Q1. A person is able to crush a soda can by standing on it. If the same person lies down on the can, it does not crush. This difference is primarily due to:
- The change in the person's weight.
- The difference in the magnitude of force applied.
- The change in the area over which the force is distributed.
- The elasticity of the soda can material.
- Q2. Two objects, X and Y, have the same mass. Object X exerts a pressure of P_X and object Y exerts a pressure of P_Y on the ground. If the area of contact for X is half that of Y, which of the following is true?
- P_X = P_Y
- P_X = 2 * P_Y
- P_Y = 2 * P_X
- P_X = P_Y / 4
- Q3. Why are dams built with a much wider base than their top, even though the water level is uniform throughout the width?
- To provide more space for water storage.
- To withstand the stronger atmospheric pressure at lower depths.
- To counteract the increasing pressure of water with depth.
- To make the dam visually more appealing.
- Q4. Which of the following scenarios best demonstrates a non-contact force at play?
- A car moving after the engine starts.
- A person pushing a shopping cart.
- Leaves falling from a tree.
- A boat propelled by oars.
- Q5. A hydraulic lift uses oil to multiply force. This principle is based on:
- Newton's First Law of Motion.
- Pascal's Law.
- Archimedes' Principle.
- The Venturi effect.
+ 5 more in the printable PDF.