# NCERT Solutions for Class 7 Science Chapter 13 - Motion and Time

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NCERT Solutions for Class 7 Science Chapter 13 - Motion and Time: Earlier you have learned about different types of motions. You learned that a motion could be along a straight line, it could be circular or periodic. We know that some vehicles move faster than others. Even the same vehicle may move faster or slower at different times. The most convenient way to find out which of the two or more objects is moving faster is to compare the distances moved by them in unit time. Thus, if we know the distance covered by two buses in one hour, we can tell which one is faster. We call the distance covered by an object in a unit time as the speed of the object. All you will study in this chapter is the motion of any object and the time covered by them.

Here are the important topics of NCERT Solutions for Class 7 Science Chapter 13 - Motion and Time mentioned below:

13.1 Slow or Fast

13.2 Speed

13.3 Measurement of Time

Units of Time and Speed

13.4 Measuring Speed

13.5 Distance-time Graph

This chapter will also tell you that the distance moved by an object in a unit time is called its speed. Speed of objects helps us to decide which one is moving faster than the other. The speed of an object is the distance traveled divided by the time taken to cover that distance. Its basic unit is meter per second (m/s). Periodic events are used for the measurement of time. The periodic motion of a pendulum has been used to make clocks and watches. The motion of objects can be presented in pictorial form by their distance-time graphs. The distance-time graph for the motion of an object moving with a constant speed is a straight line.

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from the Science book of NCERT.

Q1. A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?

Q2. The distance between two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train.

Q3. The odometer of a car reads 57321.0 km when the clock shows the time at 08:30 AM. What is the distance moved by car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.

If you have any problem in answering these questions or you are not getting the correct answers then don't worry, NCERT Solutions for Class 7 Science Chapter 13 - Motion and Time is there for you to help. Solutions for NCERT Class 7 Science Chapter 13 - Motion and Time will give you answers to all the questions which are mentioned in the NCERT book.

First of all, try to answer all the questions by yourself. Then, if you need any help, NCERT Solutions for Class 7  will suggest you the best answers which are written by our experts.

## NCERT Solutions for Class 7 Science – Chapter-wise

 Chapter No. Chapters Name Chapter 1 Nutrition in Plants Chapter 2 Nutrition in Animals Chapter 3 Fibre to Fabric Chapter 4 Heat Chapter 5 Acids, Bases and Salts Chapter 6 Physical and Chemical Changes Chapter 7 Weather, Climate and Adaptations of Animals to Climate Chapter 8 Winds, storms and cyclones Chapter 9 Soil Chapter 10 Respiration in Organisms Chapter 11 Transportation in Animals and Plants Chapter 12 Reproduction in Plants Chapter 14 Electric Current and Its Effects Chapter 15 Light Chapter 16 Water: A Precious Resource Chapter 17 Forests: Our Lifeline Chapter 18 Wastewater Story

## NCERT Solutions for Class 7- Subject Wise

 NCERT Solutions for Class 7 Maths NCERT Solutions for Class 7 Science