Friction Worksheet | Forces and Motion | Primary Resources - Free Printable

I'll solve this problem by analyzing the friction worksheet in the image. Let me break down what I need to do and then fill in the table with appropriate examples.

First, I need to understand what the worksheet is asking for. It wants me to categorize examples of friction into "High Friction" and "Low Friction" and also determine whether they are "Useful" or "Not Useful".

Let me examine the images provided for guidance:
1. A girl pushing a box (likely showing high friction as she's exerting effort)
2. A child sliding down a slide (likely showing low friction as sliding occurs easily)
3. A person pulling a rope (could be demonstrating friction between hands and rope)

Now, I'll think about common examples of friction in the world around us and categorize them appropriately.

For High Friction (Useful):
- Car tires on road (provides grip for driving)
- Shoe soles on pavement (prevents slipping)
- Brakes on bicycles/cars (stops motion)
- Hands gripping objects (allows us to hold things)

For High Friction (Not Useful):
- Rusty door hinges (makes opening difficult)
- Worn-out engine parts (causes wear and reduces efficiency)
- Drag on moving vehicles (reduces fuel efficiency)

For Low Friction (Useful):
- Ice skating (allows smooth gliding)
- Ball bearings in machinery (reduces wear and allows smooth rotation)
- Lubricated joints (reduces friction for smoother movement)
- Slide at playground (allows children to slide down easily)

For Low Friction (Not Useful):
- Wet roads (reduces tire grip, can cause accidents)
- Banana peel on floor (causes slipping)
- Oily surfaces (can cause loss of grip)

Based on this analysis, I can now fill in the table:

High Friction - Useful:
- Car tires on road
- Shoe soles on pavement
- Brakes on vehicles
- Hands gripping tools

High Friction - Not Useful:
- Rusty door hinges
- Worn-out engine parts
- Excessive air resistance on vehicles

Low Friction - Useful:
- Ice skating
- Ball bearings in machines
- Playground slides
- Lubricated bicycle chains

Low Friction - Not Useful:
- Wet roads
- Banana peels on floors
- Oily kitchen floors

This completes the task of filling in the friction worksheet with appropriate examples categorized by whether they represent high or low friction and whether they are useful or not useful in everyday life.