Energy Transfers and Transformations
Lesson 2
Energy Transfers and Transformations
Predict three facts that will be discussed in Lesson 2 after reading the headings. Write your facts in your Science Journal.
Law of Conservation of Energy I found this on page
Express the law of conservation of energy in a diagram. .
Energy
can be
I found this on page
cannot be
Apply the law of conservation of energy to energy
.
transformations that occur in a flashlight.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Chemical transformed energy from to the battery
moving transformed through the to contact strip to the bulb
+
in the bulb
I found this on page
Contrast energy transfer with energy transformation.
.
Energy Transfer
I found this on page
.
Energy Transformation
Identify three criteria required for an energy transfer to be considered an occurrence of work.
1. 2. 3. I found this on page
.
Explain what makes an energy transformation inefficient.
Using Energy and Heat
125
Lesson 2 | Energy Transfers and Transformations (continued)
I found this on page
.
Distinguish an open system from a closed system. Open System Definition:
Closed System Definition:
Example: Example: Explanation: Explanation:
Categorize resources that people transform into electric energy.
Energy Transformations and Electric Energy
Category .
I found this on page
.
I found this on page
.
an energy resource that is replaced as fast as, or faster than, it is used
Nonrenewable energy resource
Types • • • • • • •
Designate what percentages of our electric energy come from categories of resources. Write the percentage in the category boxes in the table above.
Synthesize It
126
Using Energy and Heat
Explain two reasons it is wise to use energy-efficient electric appliances.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
I found this on page
Definition
Energy Transfers and Transformations
Predict three facts that will be discussed in Lesson 2 after reading the headings. Write your facts in your Science Journal.
Law of Conservation of Energy I found this on page
Express the law of conservation of energy in a diagram. .
Energy
can be
I found this on page
cannot be
Apply the law of conservation of energy to energy
.
transformations that occur in a flashlight.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Chemical transformed energy from to the battery
moving transformed through the to contact strip to the bulb
+
in the bulb
I found this on page
Contrast energy transfer with energy transformation.
.
Energy Transfer
I found this on page
.
Energy Transformation
Identify three criteria required for an energy transfer to be considered an occurrence of work.
1. 2. 3. I found this on page
.
Explain what makes an energy transformation inefficient.
Using Energy and Heat
125
Lesson 2 | Energy Transfers and Transformations (continued)
I found this on page
.
Distinguish an open system from a closed system. Open System Definition:
Closed System Definition:
Example: Example: Explanation: Explanation:
Categorize resources that people transform into electric energy.
Energy Transformations and Electric Energy
Category .
I found this on page
.
I found this on page
.
an energy resource that is replaced as fast as, or faster than, it is used
Nonrenewable energy resource
Types • • • • • • •
Designate what percentages of our electric energy come from categories of resources. Write the percentage in the category boxes in the table above.
Synthesize It
126
Using Energy and Heat
Explain two reasons it is wise to use energy-efficient electric appliances.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
I found this on page
Definition
