

Motors and Generators
Presentation
•
Science
•
8th Grade
•
Practice Problem
•
Medium
+3
Standards-aligned
Armani Parker
Used 91+ times
FREE Resource
2 Slides • 15 Questions
1
Motors and Generators Lesson

2
3
Multiple Choice
What two forces are required for generators and electric motors to work?
magnetism and thermal
electricity and magnetism
electricity and thermal
magnetism and radiant
4
Multiple Choice
What did Faraday discover about induction?
That a changing magnetic field induces a current in a conductor.
That electricity and magnetism were related when he noticed a current carrying conductor deflected the compass of a needle.
That the Earth's magnetosphere deflected from the Sun known as solar winds.
That alternating current could be manipulated with transformers.
5
Multiple Choice
Motors are devices that convert ____ energy into ____ energy.
electrical; mechanical
chemical; mechanical
mechanical; electrical
potential; kinetic
6
Multiple Choice
This picture is an example of a ___________.
Step Up Transformer
Motor
Step Down Transformer
Generator
7
Multiple Select
Choose all of the motors.
8
Multiple Choice
Generators are devices that convert _____ energy into _____ energy.
mechanical; electrical
potential; kinetic
chemical; mechanical
electrical; mechanical
9
Multiple Select
Choose all of the generators.
10
Multiple Choice
A transformer actually transforms
generators into motors
magnetic field lines
voltage
11
Multiple Select
Choose all of the transformers.
12
Multiple Choice
Which best describes how a motor works?
When a fan blows on a wire, it causes it to spin, creating a force.
When a fan blows on a wire, it causes it to spin, creating an electrical current.
When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.
When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.
13
Multiple Choice
What is produced by moving a permanent magnet through a coil of copper wire?
light
electricity
sound
electromagnet
14
Multiple Choice
In an electric motor, the energy transformation begins as ---
electrical and becomes chemical
mechanical becomes electrical
electrical and becomes mechanical
mechanical and becomes chemical
15
Multiple Choice
What energy do you put IN to a generator?
Thermal
Mechanical
Electrical
Potential
16
Multiple Choice
What type of energy comes OUT of a generator?
Electrical
Potential
Mechanical
Thermal
17
Multiple Choice
Generators are devices that convert _____ energy into _____ energy.
mechanical; electrical
potential; kinetic
chemical; mechanical
electrical; mechanical
Motors and Generators Lesson

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