MEASUREMENT AND MOTION

REVISION QUESTIONS

1.Height of a person is 1.75 m. express his height in cm and mm.
2.The distance between Delhi and Kanpur is usually expressed in
 a. Metre b. Centimeter c. Kilometer d. Hectometer 
3. Which of the following does not represent a time-interval? 
a. A day b. A minute c. A second d. Time of sunrise. 
4. One kilometer is equal to
a. 100 m b. 1000 m c. 10 m d. 1000 cm 

5.What is unit? Write S.I. unit of mass. 
6. How periodic motion is different from circular motion? 
7. Three students measured the length of same wall. The results of these students are different. What might be the possible reasons? 
8. Saina and Megha are friends. They were riding on their bicycle. Saina said that motion of wheel of cycle is rectilinear but Megha argued that motion of cycle wheel is circular. Who was correct? Why? 

 9.Fill in the blanks.
 a. The standard unit of length is ----------------. 
b. The motion described by a simple pendulum is --------------- motion.
 c. Length more than one thousand meters are measured in -------------.
 d. Motion of a car on straight road is -------------- motion. 
e. Hectare is the unit of ----------------. 
10. Define curvilinear motion? Give one example.
 11. What is the S. I. unit of length and what is their symbol?
 12. What is difference between periodic and non-periodic motion. Give example. 
13. Classify the following motion as uniform motion, non-uniform motion and oscillatory motion. 
Car moving with constant speed, 
Bus moving on city road,
 rotation of earth, 
riding of cycle in crowded road, 
pendulum of clock, a swing.