Match the two columns: Column A Column B 1. Odometer (i) The time taken by a pendulum to complete one oscillation 2. Time period (ii) A device used by Romans to measure time 3. Sand clock (iii) 10 6 nanosecond 4. One second (iv) Representation of the speed of different moving bodies 5. Distance-time graph (v) A unit of time (vi) 10 9 nanosecond (vii) Gives the distance travelled by a moving vehicle

Odometer — (vii) Gives the distance travelled by a moving vehicle. Odometer is a device used to measure the distance travelled by a moving vehicle. It can read the distance either in miles or kilometers. Time Period — (i) The time taken by a pendulum to complete one oscillation. Time Period of a pendulum is defined as the time taken by a pendulum to complete one oscillation. The unit of time is second. Sand clock — (ii) A device used by Romans to measure time. Sand clock is a device used by Romans to measure time. In a sand clock, a definite amount of sand takes a constant time to fall from the upper chamber to the lower chamber. One second — (v) a unit of time, (vi) 10 9 nanosecond. One second is a SI unit of time and the value equals to 10 9 nanosecond. The other units of time are minute, hour, day, week, month and year. Distance-time graph — (iv) Representation of the speed of different moving bodies. Distance-time graph is a representation of the speed of different moving bodies. The slope represents the speed of the body.

E M B I B E

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B

MEDIUM

7th CBSE

IMPORTANT

Earn 100

The figure given alongside represents the distance-time graph for the motion of three moving bodies $A$ , $B$ and $C$ . Which of them is the fastest moving body and which one is the slowest moving body?

Important Questions on Motion and Time

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7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B

What are the limitations of a sundial?

EASY

7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C

The distance between two cities is measured in _____.

EASY

7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C

Select the correct answer frm the options in the bracket.

A car moving with a constant speed in the same direction is said to be in _____ motion. (Uniform / Non-Uniform)

EASY

7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C

For a body in uniform motion, the distance-time graph is a _____.

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7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C

The time gap between the two events is called _____.

HARD

7th CBSE

IMPORTANT

Start Up Science 7>Chapter 12 - Motion and Time>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C

Match the two columns:

	Column A		Column B
1.	Odometer	(i)	The time taken by a pendulum to complete one oscillation
2.	Time period	(ii)	A device used by Romans to measure time
3.	Sand clock	(iii)	$10^{6}$ nanosecond
4.	One second	(iv)	Representation of the speed of different moving bodies
5.	Distance-time graph	(v)	A unit of time
		(vi)	$10^{9}$ nanosecond
		(vii)	Gives the distance travelled by a moving vehicle