Download CHAPTER RESOURCES VOCABULARY KEY CONCEPT

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Energy
the BIG idea
Energy has different forms, but it is always conserved.
3.1 Energy exists in different forms.
3.2 Energy can change forms but is never lost.
3.3 Technology improves the ways people use energy.
CHAPTER OUTLINE
CHAPTER RESOURCES
3.1
CHAPTER HOME
KEY CONCEPT
Energy exists in different forms.
• Energy is the ability to cause a change.
• Different forms of energy produce changes in different
ways.
• Kinetic energy depends on mass and speed.
VOCABULARY
energy
kinetic energy
potential energy
High Speed
Low Speed
CHAPTER
RESOURCES
SECTION
OUTLINE
3.1
KEY CONCEPT
CHAPTER HOME
Energy exists in different forms.
• Energy is the ability to cause a change.
• Different forms of energy produce changes in different
ways.
• Kinetic energy depends on mass and speed.
• Potential energy depends on position and chemical
composition.
VOCABULARY
energy
kinetic energy
potential energy
CHAPTER
RESOURCES
SECTION
OUTLINE
3.2
CHAPTER HOME
KEY CONCEPT
Energy can change forms but is never lost.
• Energy often needs to be transformed in order to
produce a useful form of energy.
• The law of conservation of energy states that energy
is never created or destroyed.
VOCABULARY
law of conservation
of energy
energy efficiency
CHAPTER
RESOURCES
SECTION
OUTLINE
3.2
CHAPTER HOME
KEY CONCEPT
Energy can change forms but is never lost.
• Energy often needs to be transformed in order to
produce a useful form of energy.
• The law of conservation of energy states that energy
is never created or destroyed.
• Energy can be transformed in many different ways,
including from potential energy (PE) to kinetic energy
(KE) and back again.
VISUALIZATION
Investigate the relationship
between potential energy
and kinetic energy.
VOCABULARY
law of conservation
of energy
energy efficiency
CHAPTER
RESOURCES
SECTION
OUTLINE
3.3
CHAPTER HOME
KEY CONCEPT
Technology improves the ways people use
energy.
• Different forms of technology are being developed and
used to improve the efficiency of energy conversions.
VOCABULARY
solar cell
• Solar cells convert sunlight into electrical energy.
• New solar cells convert light into electrical energy more
efficiently than those in the past
CHAPTER
RESOURCES
SECTION
OUTLINE
3.3
CHAPTER HOME
KEY CONCEPT
Technology improves the ways people use
energy.
• Different forms of technology are being developed and
used to improve the efficiency of energy conversions.
VOCABULARY
solar cell
• Solar cells convert sunlight into electrical energy.
• New solar cells convert light into electrical energy more
efficiently than those in the past
VISUALIZATION
CLASSZONE.COM
Observe how solar cells
produce electricity.
CHAPTER
RESOURCES
SECTION
OUTLINE
3.1
KEY CONCEPT
CHAPTER HOME
Energy exists in different forms.
I. Energy exists in different forms.
A. Different forms of energy have different uses.
1. Energy
VOCABULARY
energy
kinetic energy
potential energy
2. Forms of Energy
B. Kinetic energy and potential energy are the two
general types of energy.
1. Kinetic Energy
2. Potential Energy
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
3.2
CHAPTER HOME
KEY CONCEPT
Energy can change forms but is never lost.
II. Energy can change forms but is never lost.
A. Energy changes forms.
1. Conversions Between Potential Energy and
Kinetic Energy
VOCABULARY
law of conservation
of energy
energy efficiency
2. Using Energy Conversions
B. Energy is always conserved.
C. Energy conversions may produce unwanted
forms of energy.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
3.3
CHAPTER HOME
KEY CONCEPT
Technology improves the ways people use
energy.
III. Technology improves the ways people use energy.
VOCABULARY
solar cell
A. Technology improves energy conversions.
1. Efficient Lights
2. Efficient Cars
B. Technology improves the use of energy
resources.
1. Solar Energy
2. Wind Energy
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
CHAPTER HOME
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