9. Complete the crossword using the glven clues. Across Down 2. The change in position of an object with respect 1. The motion in which an object covers equal to time. distances over equal intervals of time 4. A device based on the principle that a definite 3. The triangular metallic plate of a shadow clock. quantity of sand takes a constant time to fall 5. A device which shows the speed of vehicles. 7. The spherical part of a pendulum that is 6. The type of motion shown by a pendulum. suspended from the string. 9. The back and forth motion of a pendulum. 8. It tells us about the magnitude of a quantity 12. A dark area formed on a screen when light is 10. A primitive unit of measurement of distance. blocked by an object. 11. Another name for a water clock 13. The duration between sunrise and sunset, 14. The rate of change of distance per unit time. 14. The globally adopted system of measurement of quantities 10 IT 13 14 15 16 10 19 20 10 Wiaba
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1. The change is position of an object with respect to the surroundings is called motion.
2. uniform motion
3. gnomon
4. odometer
5.
6. periodic motion
7. oscillation
8.with respect to some reference value of the same quantity.
9. shadow
10. clepsydra
11. 12 hours on the day
12. The ratio of any unit of distance to any unit of time is a unit of speed
13.
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