Across
- 2. is determined by the average atomic mass.
- 3. a kind of matter that cannot be separated into other kinds of matter by and physical means.
- 9. an atom or molecule that has a net charge do to losing or gaining an electron(s).
- 10. the process in which a solid turns directly into a gas
- 12. a miniature semiconductor that regulates or controls current or voltage flow.
- 16. the transfer of heat energy through space (not only outerspace)
- 17. this states that the sun is the center of our solar system and the planets revolve around it.
- 20. a surface or a line that is curved inward.
- 22. energy stored as a result of applying a force to deform an elastic object, E.X. coiling a spring
- 23. anything that takes up space.
- 24. forms when an atom completely transfers an electron(s).
- 27. creation of an EMF by moving a magnetic field around an electric conductor.
- 28. a semiconductor device that acts as a one-way switch for current.
- 29. 299,793,458 m/s.
- 30. objects in space that range in size from dust grains to small asteroids. Think of them as “space rocks."
- 31. the scientific theory that matter is composed of particles called atoms
Down
- 1. states that mass is can neither be created nor destroyed, only change from state to state.
- 4. this wave can cause skin cancer and other skin problems, and is used kill bacteria and create florescent lights
- 5. hot air rises and cold air sinks
- 6. forms when two or more atoms share electrons,
- 7. liquid changing to the gas phase via boiling
- 8. mass of a unit volume of a material substance. The formula to find this is Mass/Volume.
- 11. the potential energy an object has in relation to another object due to gravity
- 13. the rate of flow of electric charge
- 14. energy is neither created nor destroyed, it just changes into different types of energy
- 15. a combination of two or more elements or compounds which have not bonded together, each element or compound keeps its own properties.
- 18. frozen leftovers from the formation of the solar system composed of dust, rock, and ices.
- 19. sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system.
- 20. a substance that is made up of more than one type of atom bounded together.
- 21. is the difference in electrical potential between two points
- 25. a theory in which Earth is the center of our solar system.
- 26. a surface or line that is curved outward.