Motion and Its Types (Class 7 Science)
Understand different types of motion, speed, velocity, and acceleration. Learn to analyze movement in physics.
TL;DR: Understand different types of motion, speed, velocity, and acceleration. Learn to analyze movement in physics.
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Understand different types of motion, speed, velocity, and acceleration. Learn to analyze movement in physics.
Motion and Its Types MCQs with Answers & Explanations
Q1. What is motion?
- No movement
- Change in position with time ✓ (correct)
- Standing still
- Staying in one place
Explanation: Motion is the change in position of an object with respect to time. It is relative and depends on the reference point.
Q2. What is speed?
- Change in position
- Direction of motion
- Distance covered per unit time ✓ (correct)
- Velocity with direction
Explanation: Speed is the distance covered per unit time. It is a scalar quantity and does not include direction.
Q3. What is the SI unit of speed?
- miles/hour
- km/h
- cm/s
- m/s ✓ (correct)
Explanation: The SI unit of speed is meters per second (m/s). km/h is commonly used but not the SI unit.
Q4. What is the difference between distance and displacement?
- Distance is path length; displacement is straight-line change in position ✓ (correct)
- Displacement is longer
- Same thing
- Distance considers direction
Explanation: Distance is the total path length traveled (scalar). Displacement is the straight-line change in position (vector) from start to end.
Q5. What is uniform motion?
- Changing speed
- Constant speed in same direction ✓ (correct)
- No motion
- Accelerated motion
Explanation: Uniform motion occurs when an object travels equal distances in equal times at constant speed and direction.
Q6. What is non-uniform motion?
- Motion in straight line
- Constant speed
- Variable speed or direction ✓ (correct)
- No acceleration
Explanation: Non-uniform motion is when speed or direction changes. Examples: car accelerating, object falling due to gravity.
Q7. What is acceleration?
- Speed of an object
- Constant motion
- Distance traveled
- Change in velocity per unit time ✓ (correct)
Explanation: Acceleration is the rate of change of velocity. It includes changes in speed or direction and is measured in m/s².
Q8. What is linear motion?
- Motion in a straight line ✓ (correct)
- Motion with acceleration
- Rotational motion
- Motion in circular path
Explanation: Linear motion is movement along a straight path. Examples: car on a straight road, freely falling object.
Q9. What is circular motion?
- Motion in straight line
- Motion in a circular path ✓ (correct)
- Oscillatory motion
- Random motion
Explanation: Circular motion is movement along a circular path. Examples: planets orbiting the sun, car turning in a circular track.
Q10. What is oscillatory motion?
- Circular motion
- Linear motion
- Motion that repeats in a fixed path ✓ (correct)
- Random motion
Explanation: Oscillatory motion is repetitive motion where an object moves back and forth about a fixed point. Examples: pendulum, vibrating string.
Frequently Asked Questions
How can I calculate average speed?
Average speed = Total distance / Total time. Example: If you travel 100 km in 2 hours, average speed = 100/2 = 50 km/h.
What does negative acceleration mean?
Negative acceleration (deceleration) means the velocity is decreasing. The object is slowing down. Example: a car braking has negative acceleration.
More Class 7 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
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