Across
- 2. A substance whose crystals can vibrate rapidly and precisely
- 7. The instrument used in vehicles for measuring the speed
- 8. The metallic ball in a simple pendulum
Down
- 1. One billionth of a second
- 3. We need Distance and Time to calculate _____.
- 4. To and fro motion of a pendulum of a clock
- 5. Basic unit of distance.
- 6. Basic unit of time