Q1) Give two examples each of the modes of transport used on land, water, and air.
Q2) Fill in the blanks:
(i) One metre is __________ cm.
(ii) Five kilometres is __________ m.
(iii) Motion of a child on a swing is ___________.
(iv) Motion of the needle of a sewing machine is ___________.
(v) Motion of wheel of a bicycle is___.
Q3) Why can a pace or a footstep not be used as a standard unit of length?
Q4) Arrange the following lengths in their increasing magnitude:
1 metre, 1 centimetre, 1 kilometre, 1 millimetre
Q5) The height of a person is 1.65 m. Express this in cm and mm.
Q6) The distance between Radha’s home and her school is 3250 m. Express this distance in km.
Q7) While measuring the length of a knitting needle, the reading of the scale at one end is 3 cm and at the other end is 33.1 cm. What is the length of the needle?
Q8) Write the similarities and the differences between the motion of a bicycle and a ceiling fan that has been switched on.
Q9) Why can you not use an elastic measuring tape to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with an elastic tape?
Q10) Give two examples of periodic motion.
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