Motion and Measurement of Distances Class 6 Worksheet Science Chapter 7

Q1. Fill in the blanks:

i. Measurement is the comparison of an unknown quantity with some              quantity.
ii. 1 km =            m.
iii. Standard unit of length is              .
iv. The length of curved line can be measured using a               .
v.              is the distance between two points or ends of an object.
vi.                   means the change in position of an object with time.

Q2. True/False:

i. The choice of device used for the measurement depends on the type of measurement to be made. 
ii. Our senses are reliable for accurate measurement. 
iii. 1m = 100cm. 
iv. 5km = 5000cm. 
v. Motion of a child on a swing is periodic motion. 
vi. Motion of a wheel of a cycle is random motion. 

Q3. Which measuring device can be used to measure the girth of a tree?

Q4. Write the type of motion in which a body moves along a straight path.

Q5. Which unit of length is used to measure a large distance?

Q6. Write one example of circular motion.

Q7. Write one example of rectilinear motion.

Q8. Write one example of periodic motion.

Q9. Name the type of motion in which a body moves along a curved path.

Q10. Name the type of motion in which motion repeats after equal time interval.

Q11. The distance between Ria’s house and temple is 1340 m. Express this distance in kilometre.

Q12. Find the length of square in mm.

Q13. Define ‘unit’.

Q14. When object is said to be in rest?

Q15. What do you understand by ‘measurement’?

Q16. What is the common in between hand span, pace, angul and fist?

Q17. When object is said to be in motion?

Q18. Why is the hand span not considered as a reliable unit for measuring the length?

Q19. What do you understand by standard unit of measurement?

Assertion and Reason Questions
Q20. Assertion (A): Motion of moon around the earth is a circular motion.
Reason (R): In a circular motion, the distance of object from a fixed point remains the same.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Q21. Assertion (A): In ancient times bullock cart was used as a means of transport.
Reason (R): Aeroplanes were developed only in 1800 AD.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Q22. Assertion (A): The motion of a ball rolling on the ground is nothing but a rectilinear motion.
Reason (R): The motion of ball rolling on the ground is a combination of different types of motion.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Q23. Assertion (A): If an object travels in such a way that it comes back to the starting position, then the displacement is zero but, the distance travelled is not zero.
Reason (R): The displacement is the shortest distance between the initial and final position of the body whereas, distance is the actual path length covered by an object.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Q24. Assertion (A): While measuring the length, the eye of the observer should be exactly above that point of measurement to avoid the parallax error.
Reason (R): The scale used to measure the length of the object must be greater than the length of the object.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

You can access the solutions to this worksheet here.