Real-world examples of sliding motion for first grade science.

📚 Quick Study Guide

• 🧊 Definition: Sliding motion occurs when an object moves across a surface while maintaining contact.
• 🚗 Friction: Friction is a force that opposes sliding motion.
• 🛹 Examples: A sled going down a hill, a book sliding across a table, or a person sliding on a slide.
• 📐 Factors Affecting Sliding: The weight of the object and the roughness of the surface affect how easily something slides.

🧪 Practice Quiz

1. Which of the following is the BEST example of sliding motion?
   1. A. A ball bouncing up and down.
   2. B. A car rolling down a hill.
   3. C. A book sliding across a desk.
   4. D. A bird flying in the sky.
2. What force opposes sliding motion?
   1. A. Gravity
   2. B. Friction
   3. C. Magnetism
   4. D. Electricity
3. Which surface would make it EASIER for a toy car to slide?
   1. A. A rough carpet
   2. B. A sandy beach
   3. C. A smooth wooden floor
   4. D. A grassy field
4. Imagine you are pushing a box across the floor. What kind of motion is this?
   1. A. Rolling
   2. B. Sliding
   3. C. Bouncing
   4. D. Flying
5. What happens to the speed of a sled if the hill is covered in ice compared to dry grass?
   1. A. It slides slower on ice.
   2. B. It doesn't slide at all on ice.
   3. C. It slides faster on ice.
   4. D. The speed stays the same.
6. Which of these activities involves sliding?
   1. A. Riding a bicycle
   2. B. Skipping rope
   3. C. Playing on a slide
   4. D. Throwing a ball
7. A heavy box is harder to slide than a light box. Why is this?
   1. A. Because heavy boxes have less friction.
   2. B. Because heavy boxes have more gravity.
   3. C. Because heavy boxes have more friction.
   4. D. Because light boxes are always smoother.