the big idea energy chapter energy has different forms, but it is always conserved. energy exists in...
TRANSCRIPT
the BIG idea
Energy
CHAPTER
Energy has different forms, but it is always conserved.
Energy exists in different forms.3.13.1
Energy can change forms but is never lost.3.23.2
CHAPTER OUTLINE
VOCABULARY
KEY CONCEPT CHAPTER HOME
Energy exists in different forms.3.1
SECTION OUTLINESECTION OUTLINE
kinetic energy
energy
potential energy
• Energy is the ability to cause a change.
• Different forms of energy produce changes in different ways.
• Kinetic energy depends on mass and speed.
High Speed Low Speed
VOCABULARY
KEY CONCEPT CHAPTER HOME
Energy exists in different forms.3.1
SECTION OUTLINESECTION OUTLINE
kinetic energy
energy
potential energy• Potential energy depends on position and chemical
composition.
• 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
KEY CONCEPT CHAPTER HOME
law of conservation of energy
Energy can change forms but is never lost.3.2
SECTIONOUTLINESECTIONOUTLINE
energy efficiency
• 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
KEY CONCEPT CHAPTER HOME
law of conservation of energy
Energy can change forms but is never lost.3.2
SECTIONOUTLINESECTIONOUTLINE
energy efficiency
• 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.
PE
PE KE
PE KE
VOCABULARY
KEY CONCEPT CHAPTER HOME
I. Energy exists in different forms.
A. Different forms of energy have different uses.
3.1
KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY
Energy exists in different forms.
1. Energy
2. Forms of Energy
B. Kinetic energy and potential energy are the two general types of energy.
1. Kinetic Energy
2. Potential Energy
kinetic energy
energy
potential energy
VOCABULARY
KEY CONCEPT CHAPTER HOME
3.2
KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY
Energy can change forms but is never lost.
II. Energy can change forms but is never lost.
A. Energy changes forms.
B. Energy is always conserved.
1. Conversions Between Potential Energy and Kinetic Energy
2. Using Energy Conversions
law of conservation of energy
energy efficiency
C. Energy conversions may produce unwanted forms of energy.