Conductors and Insulators
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
10 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Electric Current Noun
[i-lek-trik kur-uhnt]
Back
Electric Current
A flow of moving electrons that requires matter to travel and cannot pass through the vacuum of empty space.
Example: This diagram shows a simple circuit where a battery pushes charged particles through a wire (an electrical conductor), creating a flow called electric current.
2.
FLASHCARD QUESTION
Front
Resistance Noun
[ri-zis-tuhns]
Back
Resistance
The property of matter that opposes or resists the flow of electric current by absorbing energy from flowing electrons.
3.
FLASHCARD QUESTION
Front
Electrical Conductor Noun
[i-lek-tri-kuhl kuhn-duhk-ter]
Back
Electrical Conductor
A material in which electric charges can move easily, characterized by having very low resistance to electric current.
Example: This image shows that in an electrical conductor, free electrons move randomly until a voltage is applied, causing them to flow in one direction.
4.
FLASHCARD QUESTION
Front
Electrical Insulator Noun
[i-lek-tri-kuhl in-suh-ley-ter]
Back
Electrical Insulator
A material in which electric charges cannot move easily, characterized by having very high resistance to electric current.
5.
FLASHCARD QUESTION
Front
Electron Noun
[i-lek-tron]
Back
Electron
A subatomic particle whose movement in a material constitutes an electric current, being free to move within conductors.
Example: This diagram shows a Sodium atom, a metal. The single electron in the outermost shell is a valence electron, which can move freely, making Sodium a good conductor.
6.
FLASHCARD QUESTION
Front
Copper Noun
[kop-er]
Back
Copper
An excellent metallic conductor of electric current, widely used in electrical wiring due to its high level of conductivity.
7.
FLASHCARD QUESTION
Front
Rubber Noun
[ruhb-er]
Back
Rubber
An excellent electrical insulator with high resistance, commonly used as a protective coating for electrical wires and cables.
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