Motion and Time Definition, Types, Examples & Uses

Motion and Time

Subject: General Science

Book: NCERT Science Class 7

Motion describes how objects move. It is measured using **speed, time, and distance**.
- **Types of Motion**:
- **Uniform motion**: Moving at a constant speed (Example: Earth orbiting the sun).
- **Non-uniform motion**: Speed varies (Example: A moving bicycle).
- **Measurement of Time**:
- Time is measured in seconds, minutes, and hours.
- Clocks and stopwatches are used for measurement.

**Possible Exam Questions:**
1. What is the difference between uniform and non-uniform motion?
2. How is speed calculated? Provide examples.
3. Explain the importance of accurate time measurement.
4. What are the different types of clocks used in history?
5. How do we measure speed and time in daily life?