Across
- 2. when giving information about something
- 4. make greater in size,or amount
- 6. a natural movement of air of any velocity
- 8. change which is a result
- 10. something use for water
- 13. to speak to others
- 15. the solid surface of the earth
- 16. chemical element with the symbol Rn
- 19. type of elementary particle
- 20. set of things working together as parts of a mechanism system of parts working together in a machine
- 21. something that is hard and solids
- 22. substance made by mixing things together
- 23. the basic unit of a chemical element
Down
- 1. keeping or showing a fair
- 3. send something to air
- 5. the rate at which someone is able to move
- 7. a subatomic particle
- 9. book forming part of a work or series
- 11. the carrying capacity of an aircraft or launch
- 12. the work that a certain force can do
- 13. the process of burning something
- 14. measure of the amount of matter in an object
- 17. forth with sudden violence
- 18. substance is its mass per unit volume
- 19. system made available for consumer use