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Questions and Answers
What is the unit of measurement for energy?
What type of energy is involved when a force moves an object, causing it to move a certain distance?
What is the term for the unwanted or undesired output energy?
What is the law that states that energy cannot be created or destroyed, only transferred or transformed?
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What type of energy is involved in the example of an electric toothbrush?
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What is the term for the desired output energy?
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What type of energy has types including Chemical, Elastic, Gravitational, Nuclear, and Magnetic?
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What is the measure of how much input energy is converted into useful output energy?
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What is the term for when energy changes from one form to another?
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What is the term for when energy is passed from one object to another?
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Study Notes
Energy Types
- Kinetic Energy has several types: Sound, Heat, Electrical, Mechanical, Radiant, and Light
- Potential Energy has several types: Chemical, Elastic, Gravitational, Nuclear, and Magnetic
Energy Measurement and Principles
- Energy is measured in joules
- Energy can be transformed, meaning it changes from one form to another
- Energy can be transferred, meaning it is passed from one object to another
- The law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed
Energy Efficiency and Output
- Useful energy is the desired output energy
- Wasted energy is the unwanted or undesired output energy
- Energy efficiency is the measure of how much input energy is converted into useful output energy
- Example: electric toothbrush - input energy is electrical, output energy is kinetic, wasted energy is heat and sound
Energy in Action
- Energy makes things happen and is observed
- Work is being done when a force moves an object, causing it to move a certain distance
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Description
This quiz covers different types of kinetic and potential energy, measurements, and principles such as energy transformation, transfer, and conservation.
