Chapter 10: Motion and Measurement of Distances

The tenth chapter of Class 6 Science, Motion and Measurement of Distances, helps students understand how distances are measured and how motion is described scientifically. From ancient times to modern technology, humans have developed different ways of measuring distances, and this chapter traces that journey.

The chapter begins with the historical methods of measurement, where people used body parts such as a handspan, cubit, or foot. However, these were not uniform and varied from person to person, which led to the development of standard units of measurement. Today, the metric system is followed worldwide, where the metre is the basic unit of length. Next, the chapter explains motion and its different types. For example, linear motion (straight-line movement like a train on tracks), circular motion (a fan blade or a wheel), and periodic motion (a pendulum). It also explains how objects may appear to be at rest or in motion depending on the observer’s point of view. With NCERT Solutions for Class 6 Science, students can clearly understand textbook exercises that ask them to measure lengths, classify motions, and explain standard units. The NCERT Exemplar for Class 6 Science Solutions includes additional problems, such as why ancient methods were unreliable, or how to measure the length of a curved line using a thread. These higher-order questions strengthen logical thinking and practical skills.

Important points of the chapter include:

Evolution of measurement methods.
Standard units of length in the metric system.
Types of motion: linear, circular, and periodic.
Importance of accurate measurement in daily life.

By studying this chapter and practicing NCERT and Exemplar problems, students develop a clear idea of how motion and distance are measured scientifically. This forms the base for physics topics they will encounter in higher classes.