Across
- 2. a colorless, odorless reactive gas
- 3. a particular place or point
- 4. Payload is the carrying capacity of an aircraft or launch vehicle,
- 9. a stable subatomic particle with a charge of negative electricity
- 11. The photon is a type of elementary particle
- 15. the strength and vitality required for sustained physical or mental activity.
- 16. the emission of energy as electromagnetic waves or as moving subatomic particles.
- 18. separate and distinct.
- 19. prone to change, fail, or give way; not stable.
- 21. a container, typically made of glass or plastic
- 23. the imparting or exchanging of information or news
Down
- 1. series of events that are regularly repeated in the same order
- 3. wind the continuous flow of charged particles from the sun which permeates the solar system
- 5. a stable isotope of hydrogen with a mass approximately twice that of the usual isotope.
- 6. a change which is a result or consequence of an action or other cause
- 7. a subatomic particle of about the same mass as a proton but without an electric charge
- 8. the chemical element of atomic number 6
- 10. Fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products,
- 12. very close to; almost.
- 13. a measure of the amount of matter contained in or constituting a physical body
- 14. hydride:DescriptionThe helium hydride ion or hydroxide helium ion or helium is a cation with the chemical formula HeH⁺
- 17. is the chemical element with the symbol H and atomic number 1.
- 20. a radioactive isotope of hydrogen with a mass approximately
- 22. the chemical element of atomic number 2
- 24. atoms as a source of nuclear energy