Download lesson 5 review with answers

Name
Think, Read, Learn
Use with pages 390–393.
Lesson 5: How is magnetism transformed
to electricity?
Before You Read Lesson 5
Read each statement below. Place a check mark in the circle to indicate
whether you agree or disagree with the statement.
1. All electric currents provide the same amount
of energy.
2. Magnets can be used to produce electricity.
3. Electricity powers generators.
4. In a generator, mechanical energy spins wire
around a magnet.
Agree
Disagree
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✓
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✓
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✓
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© Pearson Education, Inc.
After You Read Lesson 5
Reread each statement above. If the lesson supports your choice, place
a check mark in the Correct circle. Then explain how the text supports
your choice. If the lesson does not support your choice, place a check
mark in the Incorrect circle. Then explain why your choice is wrong.
Correct
Incorrect
1.
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2.
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3.
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4.
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Notes for Home: Your child has completed a pre/post inventory of key concepts
in the lesson.
Home Activity: Demonstrate how wind or falling water can make a pinwheel
spin. Help your child relate the demonstration to the use of mechanical energy
in a generator.
Workbook
Think, Read, Learn 124
Name
Lesson 5 Review
Use with pages 390–393.
Reviewing Concepts: Sentence Completion
Complete each sentence with the correct word or phrase.
electricity
weaker
stronger
magnets
electricity
electrical energy
can be
replaced
1. Changing a magnetic field generates
(electricity, mechanical energy)
.
2. The slower the coils of an electromagnet
move, the
the current. (stronger,
weaker)
3. More coiled loops of wire around a magnet
make a
current. (weaker, stronger)
4. A generator uses wires and
electricity. (batteries, magnets)
to create
5. Michael Faraday and Joseph Henry
experimented with
(electricity,
chemistry)
6. A generator turns mechanical energy into
. (electrical energy, magnetic energy)
7. Electricity
can be)
dangerous. (is never,
8. Worn out or cracked electrical cords should
be
. (relocated, replaced)
Writing
Use a complete sentence to answer question 9. (2 points)
Sample answer: The energy of the wind and the energy
of falling water can be used to make electricity in a
generator.
124A Lesson Review
Workbook
© Pearson Education, Inc.
9. Write a sentence that tells two different sources of energy that can
be converted to electricity by a generator.