Across
- 3. What is the name of the first satellite launched into space
- 5. Name of Newton's first law of motion
- 7. Force that opposes motion
- 8. Which device converts sound energy into electrical signals
- 9. Principle that explains why ship floats
- 10. Who discovered electrons
- 13. The name of the galaxy we in live in?
- 15. What is the force that keeps satellites in orbit
- 17. What protects Earth from harmful solar radiation
- 18. Who invented electric bulb
- 19. Energy possessed by a body due to its motion
Down
- 1. Who invented the first telescope
- 2. Who is the first Indian to go to space?
- 4. The path followed by a projectile
- 6. Rate of change of velocity
- 11. Name the closest star to Earth
- 12. Physical quantity measured in joules
- 14. What is the theory that explains the origin of the universe
- 15. lens Lens that converges light rays
- 16. What is the name of the launch site for ISRO in Andhra Pradesh