Across
- 3. one of the largest clock situated in London.
- 4. it is a swinging metallic bob.
- 5. a salient invention by an Italian scientist.
- 7. distance covered by the body/time taken.
- 8. a hard crystalline mineral used in modern timekeepers.
- 9. thousand years.
Down
- 1. is an ancient method of measurement using an arm.
- 2. is the comparison of an unknown quantity with a known quantity of the same kind.
- 6. Galilei who discovered the principles of the pendulum.
- 7. it is known as the standard units of measurement.