Year 5 Exam  >  Year 5 Notes  >  Year 5 Science  >  Friction, Air and Water Resistance

Friction, Air and Water Resistance | Year 5 Science PDF Download

Understanding Friction

  • Definition of Friction: Friction is a force that occurs between two surfaces that are either moving across each other or attempting to move. For instance, when you try to push a book along the floor, friction makes this task challenging.
  • Direction of Friction: Friction always acts in the opposite direction to the motion of an object, which results in slowing down the object.

Friction, Air and Water Resistance | Year 5 Science

Why do we need friction?

  • Impacts of Friction: The amount of friction is influenced by the materials of the surfaces involved. Rougher surfaces generate more friction. Friction also leads to the production of heat. When you rub your hands together briskly, you can feel them getting warmer.
  • Utility of Friction: Friction serves as a beneficial force in various scenarios. It prevents shoes from slipping on pavements while walking and helps car tires grip the road surface to prevent skidding. For example, when you walk, friction occurs between the tread on shoes and the ground, providing traction and preventing sliding.
  • Friction Reduction: Sometimes, it is necessary to reduce friction. One common example is using oil to decrease friction between moving parts inside a car engine. The oil acts as a lubricant, keeping the surfaces apart and flowing between them. Reduced friction results in less wear on the car's moving components and reduces heat generation.

Question for Friction, Air and Water Resistance
Try yourself:
Which of the following is a benefit of friction?
View Solution

Different forces

  • Friction: Friction is a force that acts to slow down the motion of objects. It occurs when objects move through substances like water or air. For instance, when you slide a book across a table, the force that resists the motion is friction.
  • Air Resistance: Air resistance is a type of friction that happens between air and an object moving through it. Objects with larger surface areas experience more air resistance, causing them to move more slowly through the air. This is why skydivers use parachutes to increase their surface area and slow down their fall.
    Friction, Air and Water Resistance | Year 5 Science
  • Water Resistance: Similar to air resistance, water resistance occurs when an object moves through water. When you swim, your body experiences water resistance as you move through the water. It makes it harder to move swiftly through the water.
    Friction, Air and Water Resistance | Year 5 Science
The document Friction, Air and Water Resistance | Year 5 Science is a part of the Year 5 Course Year 5 Science.
All you need of Year 5 at this link: Year 5
19 videos|22 docs|6 tests

Top Courses for Year 5

FAQs on Friction, Air and Water Resistance - Year 5 Science

1. What is friction?
Ans. Friction is the force that resists the motion of an object when it is in contact with another surface. It acts in the opposite direction to the force applied to the object.
2. How does friction affect the movement of objects?
Ans. Friction can slow down or stop the movement of objects by creating resistance between the object and the surface it is moving on. It can also cause wear and tear on the surfaces in contact.
3. What are the different types of friction?
Ans. The main types of friction are static friction (when an object is at rest), kinetic friction (when an object is in motion), and rolling friction (when an object rolls on a surface).
4. How can friction be reduced or increased?
Ans. Friction can be reduced by using lubricants or smooth surfaces, while it can be increased by increasing the weight of the object or making the surfaces rougher.
5. How does air and water resistance affect friction?
Ans. Air and water resistance add additional frictional forces to objects moving through these mediums, which can further slow down the objects' movement.
19 videos|22 docs|6 tests
Download as PDF
Explore Courses for Year 5 exam

Top Courses for Year 5

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Important questions

,

pdf

,

Extra Questions

,

shortcuts and tricks

,

Sample Paper

,

ppt

,

Friction

,

Objective type Questions

,

Semester Notes

,

Air and Water Resistance | Year 5 Science

,

Free

,

past year papers

,

study material

,

Air and Water Resistance | Year 5 Science

,

Previous Year Questions with Solutions

,

Viva Questions

,

Air and Water Resistance | Year 5 Science

,

MCQs

,

Friction

,

video lectures

,

practice quizzes

,

Friction

,

Exam

,

mock tests for examination

,

Summary

;