Physical Science Study Guide

Physical Science Study Guide
Define the following terms:
1. magnetism-the force of attraction between magnets and magnetic
2. static electricity-electricity that is made by rubbing objects against
another and changing electrons
3. parallel circuit-an electrical circuit in which the output devices are
connected in a side by side, each one to a separate energy source
4. conductor- a material that conducts electricity easily
5. insulator- a material that doesn’t carry electrons
6. series circuit- an electrical circuit in which the output devices are
connected in a chain to a battery or other energy source
7. electric current- any path upon which electrons flow
8. electromagnet- a temporary magnet made by passing electric current
through a wire coiled around an iron bar
9. What must be present in order for an electromagnet to work?
Electricity: there must be a flow of electrons.
10. What happens when the south end of a magnet and the north end of
another magnet are moved towards each other? They attract each other.
11. What are the three parts of an electric circuit? A power source
(battery), a conductor (wire), and an output device
12. What are the two types of electric charges? Positive and negative
13. If matter has a balance of both positive and negative charges, what
is it called? Neutral, it has an equal number of positive and negative
14. What type of electricity has electrons constantly moving in one
direction? Current electricity
15. What items are good insulators? Plastic, wood, rubber, glass
16. What items are good conductors? Metal, water
17. What do items with the same charge do when they are placed near
each other? They repel each other.
18. What do items with unlike charges do when placed near each other?
They attract each other.
19. What type of electricity is lightning an example of? Static
20. Does a circuit have to be complete to work? Yes
21. How can electricity in a circuit easily be turned on or off? With a
22. Explain how you would test an item to see if it is a conductor or an
Place the material between the conductor and the output device and see if
the electricity still travels to the output device.
23. How could you make static electricity? By rubbing a balloon on your
head or walking across a carpet