
Electromagnetism - Topic 4 Lessons 3 & 4 (p. 78-95)
Flashcard
•
Science
•
5th - 9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What components do you need to build an electromagnet?
Back
A wire, a conductor, and a battery.
2.
FLASHCARD QUESTION
Front
What is an electromagnet?
Back
An electrified coil of wire wrapped around a ferromagnetic core.
3.
FLASHCARD QUESTION
Front
What type of core will create the strongest electromagnet?
Back
Iron.
4.
FLASHCARD QUESTION
Front
When electricity flows through the electric motor of a blender, what form of energy is produced?
Back
Kinetic energy.
5.
FLASHCARD QUESTION
Front
If you reverse the flow of current through an electromagnet, what happens to the magnetic field?
Back
The magnetic field it produces reverses its polarity.
6.
FLASHCARD QUESTION
Front
What is the role of a battery in an electromagnet?
Back
It provides the electrical energy needed to create a magnetic field.
7.
FLASHCARD QUESTION
Front
What is a ferromagnetic material?
Back
A material that can be magnetized, such as iron.
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