NCERT Exemplar Solution for Class 7 Science Chapter-13 Motion and Time
Motion and Time is one of the most interesting chapters in middle school science because it explains how objects move and how we measure that movement in everyday life. Students learn about different types of motion, the importance of time measurement, speed, distance, and the use of devices such as clocks and speedometers. This chapter also helps students understand practical examples like moving vehicles, pendulums, and the movement of the Earth. The NCERT Exemplar Solution for Class 7 Science provides detailed explanations and practice questions that improve conceptual clarity and analytical thinking. Students using the NCERT Exemplar Solution for class 7 can strengthen their understanding of numerical problems and scientific concepts. These NCERT solutions for class 7 are highly useful for exam preparation and daily revision because they simplify difficult topics in an easy-to-understand format.
Find the Exercises PDF of NCERT Exemplar Solution for Class 7 Science Chapter-13 Motion and Time
Understanding Motion and Types of Movement
The chapter introduces students to the concept of motion through real-life situations. Anything that changes its position with time is said to be in motion. A bus moving on the road, a flying bird, or even a rotating fan are examples of motion. Students also learn that some objects may appear stationary from one point of view but moving from another.
Different types of motion are discussed in this chapter. Rectilinear motion occurs when an object moves in a straight line. Circular motion is observed when an object moves along a circular path, such as the hands of a clock. Periodic motion is repetitive and occurs after equal intervals of time, like the swinging of a pendulum. Understanding these forms of motion helps students identify scientific principles in daily activities.
The chapter also highlights the importance of comparing motion. For example, passengers sitting inside a moving train may feel at rest with respect to each other, but they are actually moving with the train. Such examples help students develop observational and reasoning skills. The exemplar questions challenge learners to think deeply and apply concepts practically.
Measurement of Time and Speed
Time measurement has evolved from ancient methods to modern clocks and watches. Earlier, people used shadows, sand clocks, and water clocks to estimate time. Today, precise instruments make time calculation simple and accurate. The chapter explains how measuring time is essential in understanding motion and calculating speed.
Students learn the relationship between distance, time, and speed. Speed tells us how fast an object moves and is calculated by dividing the distance travelled by time taken. This concept is explained with simple examples involving bicycles, cars, and runners. Numerical problems in the chapter teach students how to calculate average speed and compare the movement of different objects. The role of measuring devices is also important. Speedometers in vehicles show speed, while odometers record the distance travelled. Clocks and stopwatches help in recording accurate time intervals. Through these concepts, students understand how science is connected to transportation, sports, and daily routines.
Practising exemplar questions helps students improve accuracy in solving numerical problems. Many questions focus on logical thinking, interpretation of data, and practical application of formulas. This makes the chapter highly valuable for building foundational scientific understanding.
Importance of Motion and Time in Daily Life
Motion and time are closely linked with human activities. From travelling to school to watching sports competitions, every activity depends on accurate measurement of movement and duration. This chapter encourages students to observe the scientific principles hidden in ordinary experiences.
The concept of periodic motion is especially important in understanding natural phenomena. Day and night occur because of Earth’s rotation, while seasons change because of Earth’s revolution around the Sun. Such examples make the chapter more engaging and relatable for students. The chapter also develops mathematical skills through calculations involving distance and speed. Students become more confident in solving word problems and interpreting scientific information. These abilities are useful not only in science but also in higher-level mathematics and physics.
The exemplar solutions provide step-by-step explanations that help students identify mistakes and improve problem-solving techniques. Regular practice builds confidence and prepares students for school examinations as well as competitive assessments. Learning this chapter carefully creates a strong base for future science studies.