Questions and Answers
What is the definition of Conduction?
What is the process called when heat is transferred by movements of a fluid?
What is the definition of Radiation?
What is Heat?
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What is Temperature?
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What is a Conductor?
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An Insulator conducts heat well.
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What is Thermal Energy?
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What is Thermal Expansion?
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What is Thermal Equilibrium?
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What is Kinetic Energy?
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Study Notes
Heat Transfer Methods
- Conduction: Direct heat transfer occurs when substances make contact, allowing energy to flow from the warmer substance to the cooler one.
- Convection: Heat transfer takes place through the motion of fluids (liquids or gases) that circulate, distributing thermal energy.
- Radiation: Transfer of heat energy occurs through electromagnetic waves and can happen even in a vacuum, without direct contact between objects.
Key Thermal Concepts
- Heat: Refers to the transfer of thermal energy between objects due to a temperature difference; this process continues until thermal equilibrium is reached.
- Temperature: Quantitative measure indicating how hot or cold an object is, typically measured in degrees Celsius (°C) or Fahrenheit (°F).
Material Properties
- Conductor: A substance that allows heat to flow easily through it, such as metals; crucial for applications requiring efficient heat transfer.
- Insulator: A material that resists heat flow, significantly slowing down thermal transfer; common insulators include rubber, glass wool, and Styrofoam.
Energy Forms and Changes
- Thermal Energy: The total kinetic energy of particles in a substance, perceived as heat; influences temperature and state changes in materials.
- Thermal Expansion: Physical phenomenon where substances expand in size when subjected to increased temperatures, leading to increased volume.
- Thermal Equilibrium: The state achieved when two objects reach the same temperature, leading to no net heat transfer between them.
Movement of Energy
- Kinetic Energy: The energy possessed by an object due to its motion; in thermal context, this energy is related to the movement of particles.
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Description
Explore the fundamental concepts of heat transfer through conduction, convection, and radiation with these flashcards. Each card provides a clear definition of key terms essential for understanding thermal energy movement. Perfect for science students looking to reinforce their knowledge on the topic.