Question

1. Identify the types of motion in the following examples:
a. Heartbeat
b. Motion of a drawer of a table
c. Potter’s wheel
d. Motion of a drill machine
e. Wheels of a moving car
f. A boy sliding down a slope
g. An apple falling from a tree
h. Needle of a sewing machine

2. Match the following (measurement and motion)
Column A Column B
1) Length a) 1000m
2) 1 Km b) 10m
3) Time c) meter
4) 1 m d) 100m
5) 1 cm e) sec
3. Multiple choice questions (measurement and motion)
a. Which unit of length will you use to express the distance between New Delhi and Agra?
i. m
ii. km
iii. cm
iv. dm
b. Which measuring device will you use to measure the width of a tree?
i. Divider
ii. Ruler
iii. Measuring tape
iv. All the above

c. When an object repeats its motion after a fixed time, then its motion is called .
i. Non-periodic.
ii. Circular.
iii. Periodic.
iv. Rectilinear

d. The S.I unit of length is .
i. Centimeter
ii. Foot
iii. Meter
iv. Kilometer

e. One centimeter is equal to millimeter.
i. 10
ii. 0.1
iii. 100
iv. None of the above

f. Motion of the needle of a sewing machine is .
i. Circular.
ii. Rectilinear.
iii. Periodic.
iv. None of the above

g. Motion of a pendulum is an example of .
i. Periodic motion.
ii. Non-periodic motion.
iii. Rectilinear motion.
iv. Can't be said

h. Motion of a vehicle in a straight line is an example of:
i. Straight motion.
ii. Rectilinear motion.
iii. Circular motion.
iv. All of the above

i. When an object repeats its motion after a fixed time, thenits motion is called .
i. Non-periodic.
ii. Circular.
iii. Periodic.
iv. Rectilinear

j. The S.I unit of length is .
i. Centimeter
ii. Foot
iii. Meter
iv. Kilometer

k. One centimeter is equal to _______millimeter.
i. 10
ii. 0.1
iii. 100
iv. None of the above

l. To measure the girth of a tree one may use:
i. Measuring tape.
ii. Meter scale.
iii. Meter Rod.
iv. One can use any one of them

m. 1 meter is equal to centimeters.
i. 10
ii. 100
iii. 10003
iv. 0.1

n. One Kilometer is equal to meters.
i. 10.
ii. 50.
iii. 80.
iv. 1000

o. For measuring large distances, meter is not convenient; hence we define a larger unit called .
i. Millimeter
ii. Decimeter
iii. Kilometer
iv. Centimeter
p. An object is said to be in motion if:
i. Its position doesn't changes with time.
ii. It doesn't move.
iii. Both (i) and (ii).
iv. Its position changes with time

Answer 1

Q 1
a Periodic motion
b periodic motion
c Rotatory motion
d Linear motion
e Rotatory motion
f Sliding motion
g Linear motion
h Periodic motion

Q 2
1 length-metre
2 1km=1000 m
3 time=sec
4 1 m=100 cm
5 1 cm=10 mm

Q3
a ii km
b iii measuring tape
c iii periodic motion
d iii m
e i 10 mm
f iii periodic motion
g i periodic motion
h ii rectilinear motion
i iii periodic motion
j iii metre
k 10 mm
l i measuring tape
m ii 100 cm
n iv 1000 m
o iii km
p iv it's position changes with time



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Answer 2

Answer:

Q 1

a Periodic motion

b periodic motion

c Rotatory motion

d Linear motion

e Rotatory motion

f Sliding motion

g Linear motion

h Periodic motion

Q 2

1 length-metre

2 1km=1000 m

3 time=sec

4 1 m=100 cm

5 1 cm=10 mm

Q3

a ii km

b iii measuring tape

c iii periodic motion

d iii m

e i 10 mm

f iii periodic motion

g i periodic motion

h ii rectilinear motion

i iii periodic motion

j iii metre

k 10 mm

l i measuring tape

m ii 100 cm

n iv 1000 m

o iii km

p iv it's position changes with time

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Explanation: