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14 August 2012

Class VII | Science | Motion and Time |MCQ :Fill in the blanks

1. Speed of a body is the distance travelled by the body in ---- second.
Answer: One
2. if a has different speeds at different times we can calculate the ----------- speed
Answer: Average
3. Change of distance with time may be represented by a distance -------------
 Answer: Time graph
4. --------------- gives the speed of the vehicle every instant in km/h
Answer: Speedometer
5. ---- measures the total distance covered by the vehicle in meter.
Answer: Odometer
6.  -------------- is a device used for measuring wind speed.
Answer: Anemometer
7.  -------------- is nothing but speed in a definite direction
Answer: Velocity
8. ------ is the change of velocity in one second.
Answer: Acceleration
9. The speed of a moving body at any particular instant of time is called------------- Answer: instantaneous speed.
10. Straight line parallel to time axix of distance-time graph express ----- the motion of an object.
Answer: Constant

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