Conservation of Energy
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
14 questions
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1.
FLASHCARD QUESTION
Front
Energy Noun
[en-er-jee]
Back
Energy
The ability to do work or cause change in a system, existing in various forms like kinetic or potential energy.
Example: This diagram shows work, which is the transfer of energy. Positive work adds energy to an object, while negative work removes energy from it.
2.
FLASHCARD QUESTION
Front
Kinetic Energy Noun
[ki-net-ik en-er-jee]
Back
Kinetic Energy
The energy an object possesses due to its motion, which is dependent on both its mass and its velocity.
Example: At the highest point of the roller coaster track, the cart has maximum potential energy and zero kinetic energy because it is momentarily stopped before moving.
3.
FLASHCARD QUESTION
Front
Potential Energy Noun
[po-ten-shul en-er-jee]
Back
Potential Energy
Stored energy an object has based on its position, condition, or chemical composition, ready to be converted into other forms.
Example: Pushing a boulder up a mountain stores energy due to its increased height; this stored energy is called gravitational potential energy.
4.
FLASHCARD QUESTION
Front
Mechanical Energy Noun
[muh-kan-i-kuhl en-er-jee]
Back
Mechanical Energy
The total energy of an object or system, calculated as the sum of its kinetic energy and its potential energy.
Example: Mechanical energy is the sum of potential energy (PE) and kinetic energy (KE). At the top of the hill, the cart has maximum PE and zero KE.
5.
FLASHCARD QUESTION
Front
Law of Conservation of Energy Noun
[law uv kon-ser-vey-shun uv en-er-jee]
Back
Law of Conservation of Energy
The fundamental principle stating that energy cannot be created or destroyed, only transformed or transferred from one form to another.
Example: A cyclist climbing a hill converts motion into stored potential energy. Going downhill, this potential energy converts back into the energy of motion (kinetic energy).
6.
FLASHCARD QUESTION
Front
Energy Transformation Noun
[en-er-jee trans-for-mey-shun]
Back
Energy Transformation
The process of energy changing from one form to another, such as potential energy converting into kinetic energy within a system.
Example: A generator transforms mechanical energy from the rotating wire coil into electrical energy, which then becomes light and heat energy in the bulb.
7.
FLASHCARD QUESTION
Front
First Law of Thermodynamics Noun
[furst law uv thur-moh-dahy-nam-iks]
Back
First Law of Thermodynamics
The scientific law stating that the total energy of an isolated system remains constant; a restatement of energy conservation.
Example: This diagram shows that the change in a system's internal energy (ΔU) equals the heat added (ΔQ) minus the work done (W), demonstrating energy conservation.
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