Motion and Time Class 7 Science Multiple Choice Questions & Answers

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Question-1. A car covers 40 km in first hour, 115 km in next two hours and 45 km in next one hours. Find out its averages speed:

  1. 100 km/h
  2. 66.6 km/h
  3. 50 km/h
  4. none of these
Answer-1    

Question-2. A car moves with a speed of 80 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is

  1. 100km
  2. 50km
  3. 35km
  4. 70km
Answer-2    

Question-3. A device used to measure the distance moved by a vehicle:

  1. odometer
  2. speedometer
  3. both
  4. none of these
Answer-3    

Question-4. A horse pulling a cart has:

  1. oscillatory motion
  2. circular motion
  3. linear motion
  4. none of these
Answer-4    

Question-5. A simple pendulum executes a

  1. periodic motion
  2. oscillatory motion
  3. both (a) and (b)
  4. none of these
Answer-5    

Question-6. A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?

  1. 2.1 s
  2. 4.2 s
  3. 21 s
  4. 8.40 s
Answer-6    

Question-7. An ancient Time measuring device SUNDIAL at JantarMantar is in ( )

  1. Ahmedabad
  2. Bombay
  3. Delhi
  4. Lucknow
Answer-7    

Question-8. An example of Oscillatory motion is ( )

  1. Motion of a cycle wheel
  2. Movement of a car on a straight road
  3. Motion of earth around the sun
  4. Motion of a swing.
Answer-8    

Question-9. If a pendulum is vibrating at 10 Cycles-1, its time period is

  1. 1 sec
  2. 0.1 sec
  3. 0.5 sec
  4. 0.01 sec
Answer-9    

Question-10. If an object covers equal distance in equal intervals of time, then the object is said to have:

  1. non-uniform motion
  2. uniform motion
  3. oscillation
  4. none of these
Answer-10    

Question-11. If the speed of an object along a straight line keeps changing, its motion is said to be

  1. uniform motion
  2. non-uniform motion
  3. linear motion
  4. none of these
Answer-11    

Question-12. If the velocity of a body does not change with time, its acceleration is

  1. zero
  2. infinite
  3. unity
  4. None of these
Answer-12    

Question-13. The basic unit of speed is

  1. Km/min
  2. m/min
  3. km/h
  4. m/s
Answer-13    

Question-14. The correct symbol to represent the speed of an object is:

  1. 5 m/s
  2. 5 mp
  3. 5 m/s-1
  4. 5 s/m
Answer-14    

Question-15. The meter that is used to measure speed of a vehicle is ( )

  1. Speedometer
  2. Odometer
  3. Anemometer
  4. Thermometer
Answer-15    

Question-16. The rate of change of displacement with time is called

  1. Speed
  2. Velocity
  3. Both of these
  4. None of these
Answer-16    

Question-17. The speed of a car is 40 km/h. What is time taken to reach from one city to another city if the distance between the two cities is 480 km:

  1. 10 hours
  2. 11 hours
  3. 14 hours
  4. 12 hours
Answer-17    

Question-18. The speedometer of a vehicle measures the speed in ( )

  1. m/sec
  2. m/min
  3. km/hr
  4. km/min
Answer-18    

Question-19. The standard unit of mass is:

  1. kg
  2. mg
  3. g
  4. none of these
Answer-19    

Question-20. The time taken by a pendulum of given length to complete one oscillation is ( )

  1. Different at different times
  2. Same at all times
  3. Increases at different times
  4. Decreases at different times
Answer-20    

Question-21. The times taken by a pendulum to complete one oscillation is:

  1. oscillation period
  2. 1 second
  3. time period
  4. frequency
Answer-21    

Question-22. The value of 2km/hr is equal to

  1. 4/9 m/s
  2. 5/9m/s
  3. 13/9m/s
  4. 7/9m/s
Answer-22    

Question-23. Watch used to measure short interval of time is

  1. Stop watch
  2. Pendulum watch
  3. Atom watch
  4. Quartz watch
Answer-23    

Question-24. When the motion of the object is not along a fixed path with changing direction

  1. Random motion
  2. Oscillatory motion
  3. Periodic motion
  4. Circular motion
Answer-24    

Question-25. Which of the following is correct statements:

  1. the basic unit of time is second
  2. every object moves with a constant speed
  3. distance between two cities is measured in metres
  4. the time period of a given pendulum is not constant
Answer-25    

Question-26. Which of the following motion is circular motion:

  1. motion of a child over see saw
  2. motion of a car running on a straight road
  3. motion of an electric bell hammer
  4. motion of a child in a merry go round
Answer-26    

Question-27. Which of the following relations is correct?

  1. Speed = Distance X Time
  2. Speed = Distance/Time
  3. Speed = Time/Distance
  4. Speed = 1/Distance X Time
Answer-27    

Question-28. A bus travels 54 km in 90 minutes. The speed of the bus is

  1. 0.6 m/s
  2. 10 m/s
  3. 5.4 m/s
  4. 3.6 m/s
Answer-28    

Question-29. A motion in a straight line in a fixed direction represents a

  1. circular motion
  2. uniform motion
  3. non-uniform motion
  4. periodic motion
Answer-29    

Question-30. All oscillatory motions are

  1. rotatory motions
  2. rectilinear motions
  3. circular motions
  4. periodic motions
Answer-30    

Question-31. Swami walks to his school which is at a distance of 4 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back in his friend?s vehicle to home in 10 minutes. His average speed in km/h is

  1. 8 km/h
  2. 24 km/h
  3. 16 km/h
  4. 20 km/h
Answer-31    

Question-32. The clocks and watches which are used for measuring time are based on

  1. rectilinear motion
  2. circular motion
  3. periodic motion
  4. rotational motion
Answer-32    

Question-33. The device which is used for measuring time intervals in sports activities is called

  1. wrist watch
  2. stop watch
  3. stop clock
  4. quartz watch
Answer-33    

Question-34. The distance travelled by the vehicles is recorded by

  1. monometer
  2. odometer
  3. speedometer
  4. motometer
Answer-34    

Question-35. The distance-time graph of an object under uniform motion is a

  1. curved line
  2. straight line
  3. circle
  4. parabola
Answer-35    

Question-36. The most well known periodic motion is that of

  1. sundial
  2. stop watch
  3. simple pendulum
  4. sand clock
Answer-36    

Question-37. The motion of the moon around the earth represents a

  1. periodic motion
  2. oscillatory motion
  3. curvilinear motion
  4. none of these
Answer-37    

Question-38. The motion of the spikes in the wheels of a moving cycle is

  1. rectilinear motion
  2. circular motion
  3. oscillatory motion
  4. none of these
Answer-38    

Question-39. The S.I unit of speed is

  1. m/s
  2. km/h
  3. m/h
  4. km/s
Answer-39    

Question-40. When an object changes position with time, it is said to be in

  1. rest
  2. stationary
  3. circle
  4. motion
Answer-40    

Question-41. Which of the following is based on the study of the shadow cast by the sun?

  1. Simple pendulum
  2. Atomic clock
  3. Sun dial
  4. Quartz clock
Answer-41    

Question-42. Which of the following is the S.I unit of distance?

  1. km
  2. m
  3. cm
  4. mm
Answer-42    

Question-43. Which of the following measures the most accurate time?

  1. Sand clock
  2. Water clock
  3. Quartz clock
  4. Sundial
Answer-43    



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