2. 4 th Grade Core Knowledge Science : Electricity Quiz

3. Review  ________ is everything around you.  Matter is composed of __________.  _______ are the smallest unit of an element.  Atoms are made of smaller subatomic particles-________ (+ charge), ________ (no charge), and ________ (- charge).

4. Review  Matter is everything around you.  Matter is composed of elements.  Atoms are the smallest unit of an element.  Atoms are made of smaller subatomic particles-protons (+ charge), neutrons (no charge), and electrons (- charge)

5. More notes on atoms:  Protons are positively charged (+) and found in the ______ (the center).  _______ do not hold a charge (neutral) and are found in the nucleus.  Electrons are negatively charged and spin _______the nucleus.

6. More notes on atoms:  Protons are positively charged (+) and found in the nucleus (the center).  Neutrons do not hold a charge (neutral) and are found in the nucleus.  Electrons are negatively charged and spin around the nucleus.

7. The movement or flow of an electrical charge, usually through an electrical circuit

8. Electric Current

9. A flow of electrons

10. Current

11. The build up of an electrical charge

12. Static Electricity

13. An amount of electricity caused by having too few or too many electrons

14. Charge

15. Material that does not allow an electric current to flow  Example: plastic, glass, rubber, and wood.

16. Insulators

17. Energy made available by the flow of an electric charge through a conductor

18. Electricity

19. A negatively (-) charged particle that spins around the nucleus of an atom

20. Electron

21. A magnet formed by a current passed through a wire coiled around a core magnetic material; the current magnetizes the core

22. Electromagnet

23. Material that readily allows an electric current to flow.  Example- copper and silver

24. Conductor

25. A path through which an electric current can flow

26. Electric Circuit

27. A circuit that is not closed, or complete, and therefore DOES NOT allow electricity to flow

28. Open circuit

29. A safety feature in an electrical circuit that interrupts the circuit if the circuit goes beyond a safe level.

30. Fuse

31. An accidental connection of low resistance made between points in a circuit in which electric currents can flow; it prevents the circuit from working as it is supposed to work.

32. Short circuit

33. A complete path through which electricity can flow

34. Closed Circuit