📘 Chapter 8 – Measurement of Time and Motion

🔹 Part 1: Types of Motion (Q1–Q25)

Q1. Which of these is an example of rectilinear motion?

A) Spinning top
B) Train moving on a straight track
C) Pendulum swinging
D) Fan rotating

✅ Answer: B) Train moving on a straight track

Explanation:

• (A) Spinning top → Rotational motion.
• (B) Train on straight track → Rectilinear (straight line) motion (Correct).
• (C) Pendulum → Periodic motion.
• (D) Fan → Rotational motion.

Q2. A child on a swing shows:

A) Rectilinear motion
B) Periodic motion
C) Circular motion
D) Rotational motion

✅ Answer: B) Periodic motion

Q3. Motion that repeats itself at regular intervals is called:

A) Random motion
B) Periodic motion
C) Circular motion
D) Rotational motion

✅ Answer: B) Periodic motion

Q4. Which of the following shows circular motion?

A) Hands of a clock
B) Car on a straight road
C) Pendulum
D) Person walking

✅ Answer: A) Hands of a clock

Q5. A spinning fan shows:

A) Oscillatory motion
B) Rotational motion
C) Random motion
D) Rectilinear motion

✅ Answer: B) Rotational motion

Q6. The swinging of a pendulum is an example of:

A) Rectilinear motion
B) Oscillatory motion
C) Rotational motion
D) Circular motion

✅ Answer: B) Oscillatory motion

Q7. Which of these is NOT a type of motion?

A) Rectilinear
B) Random
C) Oscillatory
D) Chemical

✅ Answer: D) Chemical

Q8. The earth revolving around the sun is an example of:

A) Rectilinear motion
B) Circular motion
C) Oscillatory motion
D) Periodic motion

✅ Answer: D) Periodic motion
(Also circular motion, but best answer is periodic since it repeats every year.)

Q9. The blades of a windmill rotate showing:

A) Rectilinear motion
B) Oscillatory motion
C) Rotational motion
D) Random motion

✅ Answer: C) Rotational motion

Q10. Which is an example of random motion?

A) Moving train
B) Motion of insects
C) Swing of pendulum
D) Earth’s rotation

✅ Answer: B) Motion of insects

Q11. A boy running along a circular track shows:

A) Circular motion
B) Rectilinear motion
C) Oscillatory motion
D) Periodic motion

✅ Answer: A) Circular motion

Q12. The motion of a clock pendulum is:

A) Circular
B) Oscillatory
C) Rectilinear
D) Random

✅ Answer: B) Oscillatory

Q13. Which of these shows both rotational and rectilinear motion?

A) Train moving on a track
B) Bicycle in motion
C) Child on swing
D) Person walking

✅ Answer: B) Bicycle in motion
(Wheels rotate + bicycle moves forward in straight line.)

Q14. The revolution of the moon around Earth is an example of:

A) Rectilinear motion
B) Periodic motion
C) Oscillatory motion
D) Random motion

✅ Answer: B) Periodic motion

Q15. An arrow moving after being shot is in:

A) Rectilinear motion
B) Oscillatory motion
C) Random motion
D) Rotational motion

✅ Answer: A) Rectilinear motion

Q16. The heartbeat shows which type of motion?

A) Oscillatory
B) Circular
C) Rectilinear
D) Random

✅ Answer: A) Oscillatory

Q17. Which of these is an example of periodic motion in nature?

A) Earthquakes
B) Seasons
C) Random wind
D) Walking man

✅ Answer: B) Seasons

Q18. Which type of motion do the wheels of a car show?

A) Circular
B) Rotational
C) Oscillatory
D) Random

✅ Answer: B) Rotational

Q19. A child running in a playground shows:

A) Rectilinear motion only
B) Random motion
C) Circular motion
D) Periodic motion

✅ Answer: B) Random motion

Q20. The tip of a moving clock’s second hand shows:

A) Rotational motion
B) Rectilinear motion
C) Circular motion
D) Random motion

✅ Answer: C) Circular motion

Q21. A person walking straight on a road shows:

A) Circular motion
B) Rectilinear motion
C) Oscillatory motion
D) Rotational motion

✅ Answer: B) Rectilinear motion

Q22. Which of these shows oscillatory motion?

A) Pendulum
B) Earth revolving around sun
C) Fan blades
D) Train on track

✅ Answer: A) Pendulum

Q23. Which type of motion is observed in the piston of an engine?

A) Rotational
B) Oscillatory
C) Random
D) Rectilinear

✅ Answer: B) Oscillatory

Q24. The spinning of Earth on its axis is an example of:

A) Rectilinear motion
B) Rotational motion
C) Oscillatory motion
D) Random motion

✅ Answer: B) Rotational motion

Q25. The motion of the hands of a clock is:

A) Oscillatory
B) Periodic circular
C) Random
D) Rectilinear

✅ Answer: B) Periodic circular

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