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______________.
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______________.
(i) One metre is __100__ cm.
(ii) Five kilometres is __5000__ m.
1 km = 1000 m
5 km = 1000 × 5 = 5000 m
Hence, the answer is 5000 m.
(iii) Motion of a child on a swing is __periodic__.
Periodic motion:
The motion of a swing repeats itself at a certain time interval. Therefore, it has periodic motion. Hence, a child on a swing is said to have periodic motion.
(iv) Motion of the needle of a sewing machine is __periodic__.
Periodic motion:
The needle of a sewing machine moves up and down repeatedly with a certain time interval. Hence, it is an example of periodic motion.
(v)Motionof the wheel of a bicycle is __circular__.
Circular motion:
The central part of the wheel of a bicycle is attached to a fixed point. The wheel rotates about this fixed point as the bicycle moves. Hence, the wheel has a circular motion.
(i) One metre is __100__ cm.
(ii) Five kilometres is __5000__ m.
1 km = 1000 m
5 km = 1000 × 5 = 5000 m
Hence, the answer is 5000 m.
(iii) Motion of a child on a swing is __periodic__.
Periodic motion:
The motion of a swing repeats itself at a certain time interval. Therefore, it has periodic motion. Hence, a child on a swing is said to have periodic motion.
(iv) Motion of the needle of a sewing machine is __periodic__.
Periodic motion:
The needle of a sewing machine moves up and down repeatedly with a certain time interval. Hence, it is an example of periodic motion.
(v)Motionof the wheel of a bicycle is __circular__.
Circular motion:
The central part of the wheel of a bicycle is attached to a fixed point. The wheel rotates about this fixed point as the bicycle moves. Hence, the wheel has a circular motion.
