S8P5_18/19_Electromagnetism_Unit Test
Flashcard
•
Science
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is static electricity?
Back
Static electricity is the buildup of electric charge on the surface of objects, often caused by friction.
2.
FLASHCARD QUESTION
Front
What happens when two like charges are brought together?
Back
Two like charges (e.g., two positively charged objects) will repel each other.
3.
FLASHCARD QUESTION
Front
What is the cause of Earth's magnetic field?
Back
Earth's magnetic field is caused by moving currents of molten iron and nickel interacting with Earth's iron core.
4.
FLASHCARD QUESTION
Front
How can an iron nail become a permanent magnet?
Back
An iron nail can become a permanent magnet by being stroked many times with a permanent magnet.
5.
FLASHCARD QUESTION
Front
What is friction in the context of charge transfer?
Back
Friction is a method of charge transfer where electrons are transferred between two objects when they rub against each other.
6.
FLASHCARD QUESTION
Front
What is induction in terms of charge?
Back
Induction is the process of charging an object without direct contact, often through the influence of a nearby charged object.
7.
FLASHCARD QUESTION
Front
What is contact in the context of charge transfer?
Back
Contact is the transfer of charge that occurs when two objects touch each other.
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