Page 1 - CBW Measurement & Motion

SAI INTERNATIONAL SCHOOL

Class 6

Competency Based Worksheet
Subject- Physics

Ch. – Measurement and Motion

For Assertion& Reason question follow the following directions.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of
Assertion
(c) If Assertion is correct but Reason is incorrect
(d) If Assertion is incorrect but Reason is correct
(e) If Assertion & Reason both are incorrect
1. Assertion (A): Stopwatch is used to measure very short time intervals accurately.
Reason (R): Stopwatch can measure time intervals up to fractions of a second.
2. Assertion (A): The hands of a clock exhibit periodic motion.
Reason (R): Periodic motion occurs only once and does not repeat.
3. How many metres are there in 1.2 kilometres?
a) 120 m
b) 1200 m
c) 12,000 m
d) 12000 m
4. Which of the following statements is TRUE about random motion?
a) It follows a fixed path
b) It occurs only in liquids
c) It has no definite path and direction
d) It is slower than rectilinear motion

5. The thickness of 10 coins is 1.8 cm. What would be the thickness of 25 coins of the
same type?
a) 3.6 cm
b) 4.5 cm
c) 6.8 cm
d) 7.2 cm

6. A sewing machine needle shows which two types of motion together?
a) Rectilinear and Oscillatory motion
b) Oscillatory and Rotational motion
c) Rectilinear and Rotational motion
d) Random and Circular motion

Picture-Based Questions
7.