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Electricity - JW Alvey
Electricity- JW Alvey
32
Science
4th Grade
04/14/2008

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Cards

Term
1. What creates static electricity?
Definition
Rubbing certain materials together.
Term
2. What does a negative electrical charge symbol look like?
Definition
( - )
Term
3. What does a positive electrical charge symbol look like?
Definition
( + )
Term
4. What kinds of material is needed for electrical energy to move through?
Definition
Conductor
Term
5. Name examples of a conductor.
Definition
"Metal, copper"
Term
6. What type of material does not conduct electricity well?
Definition
Insulator
Term
7. Name some examples of an insulator.
Definition
"Rubber, plastic, and wood"
Term
8. Why will energy pass more or less easily through conducting materials?
Definition
Because of the material resistance
Term
9. What is the discharge of static electricity in the atmosphere called?
Definition
lightning
Term
10. What type of energy can electrical energy be transformed into?
Definition
"Heat, light, or mechanical energy"
Term
11. What creates an electrical current (electricity)?
Definition
A continuous flow of negative charges (electrons).
Term
12. What is the pathway taken by an electrical current called?
Definition
A circuit
Term
13. What type of circuit allows the movement of electrical energy?
Definition
A closed circuit
Term
14. What type of circuit prevents the movement of electrical energy?
Definition
An open circuit
Term
15. Dry cell batteries use the symbol ""+"" and ""-+"", what does ""-"" represent?"
Definition
electrical energy
Term
16. How many pathways are there in a series circuit?
Definition
one
Term
17. What is a series circuit?
Definition
"A circuit where each bulb is connected to the next so that if any bulb so that if any bulb closer to the battery goes out, all the bulbs behind it go out."
Term
18. How many pathways are there in a parallel circuit?
Definition
Two or more
Term
19. What is a parallel circuit?
Definition
"A circuit where each bulb is directly connected to the battery so that if one bulb goes out, all the remaining bulbs still shine."
Term
20. Describe the lines of force from the poles of a magnet.
Definition
They arch to create a magnetic force.
Term
21. What is the space around a magnet where magnetism acts?
Definition
A magnetic field
Term
22. What creates a magnetic field?
Definition
An electrical current flowing through a wire.
Term
23. What creates a an electrical current?
Definition
A moving magnetic field
Term
24. What is an example of a simple electromagnet?
Definition
Connect one end of a wire to a battery. Wrap the wire around a nail. Connect the other end to the battery.
Term
25. How are electromagnets different from permanent magnets?
Definition
Electromagnets can be turned on and off.
Term
26. What happens to an electromagnet when you wrap the wire even more times around the nail?
Definition
You make the electromagnet stronger
Term
27. What kind of metals attract other metals to each other?
Definition
"Iron-bearing, nickel, and cobalt"
Term
28. What did Ben Franklin study by attaching a key to a kite and flying it in a storm?
Definition
Static electricity
Term
29. What scientist discovered how to change electrical energy into light energy?
Definition
Thomas Edison
Term
30. What American scientist found ways to use electrical energy for light and recording sound?
Definition
Thomas Edison
Term
31. What was Michael Faraday known for?
Definition
He discovered that a magnetic field could cause electrical current to flow.
Term
32. Who built the first generator which became a basis for our contemporary generators built today?
Definition
Michael Faraday
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