2-3 How does energy change form?
OBJECTIVE: Identify examples of energy changing form.
Key Terms
thermal pollution: damage that occurs when waste heat enters the environment
law of conservation of energy: energy cannot be made or destroyed, but only changed in form
Lesson Summary
• Energy can change from one form to another.
• Potential energy and kinetic energy often change form.
• When energy changes form some of the energy always changes to heat.
• When waste heat energy escapes into the environment, it causes thermal pollution.
• The law of conservation of energy states that energy cannot be created or destroyed, but only changed in form.
• Einstein concluded that matter can be changed into energy, and energy can be changed into matter.
Key Terms
thermal pollution: damage that occurs when waste heat enters the environment
law of conservation of energy: energy cannot be made or destroyed, but only changed in form
Lesson Summary
• Energy can change from one form to another.
• Potential energy and kinetic energy often change form.
• When energy changes form some of the energy always changes to heat.
• When waste heat energy escapes into the environment, it causes thermal pollution.
• The law of conservation of energy states that energy cannot be created or destroyed, but only changed in form.
• Einstein concluded that matter can be changed into energy, and energy can be changed into matter.