NCERT Class VII Science Solutions: Chapter 13-Motion and Time Part 1 (For CBSE, ICSE, IAS, NET, NRA 2023)

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Question 1:

Which of the following cannot be used for measurement of time?

  1. A leaking tap.
  2. Simple pendulum.
  3. Shadow of an object during the day.
  4. Blinking of eyes.

Answer: D

Question 2:

Two clocks A and B are shown in Figure Clock A has an hour and a minute hand, whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks?

  1. A time interval of 30 seconds can be measured by clock A.
  2. A time interval of 30 seconds cannot be measured by clock B.
  3. Time interval of 5 minutes can be measured by both A and B.
  4. Time interval of 4 minutes 10 seconds can be measured by clock A.
Two Clocks a and B Are Shown in Figure

Answer: C

Question 3:

Two students were asked to plot a distance-time graph for the motion described by Table A and Table B.

Table A

Distance-Time Graph (Q)






Table B

Distance-Time Graph (A)





As Showing in Images is a Distance-Time Graph of the Uniform

The graph given in Figure is true for

  1. Both A and B.
  2. A only.
  3. B only.
  4. Neither A nor B.

Answer: A