AP Physics 2: Algebra-Based Flashcards: Specific Heat and Thermal Conductivity
Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026
Review key ideas with interactive flashcards. This set includes 10 cards to help you master important concepts.
How does doubling the thickness (L) of a material affect the rate of heat conduction through it, assuming all other variables are constant?
Doubling the thickness (L) will halve the rate of heat conduction, as the rate of energy transfer is inversely proportional to thickness.
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How does doubling the thickness (L) of a material affect the rate of heat conduction through it, assuming all other variables are constant?
Doubling the thickness (L) will halve the rate of heat conduction, as the rate of energy transfer is inversely proportional to thickness.
What is the physical meaning of a high specific heat value for a material?
A high specific heat value means that a large amount of energy is required to change the temperature of the material, indicating it can store a lot of thermal energy.
To create a good insulator that minimizes heat transfer, should you choose a material with high or low thermal conductivity?
You should choose a material with low thermal conductivity, as this will reduce the rate of energy transfer through the material.
What is thermal conductivity?
Thermal conductivity is an intrinsic property of a material that describes the rate at which energy is transferred by conduction through it.
What determines a material's thermal conductivity?
Thermal conductivity is an intrinsic property that depends on the arrangement and interactions of the atoms that make up the material.
What is specific heat?
Specific heat is the amount of energy required to change the temperature of a specific mass of a material by a certain amount.
What does the equation $\frac{Q}{\Delta t}=\frac{kA\Delta T}{L}$ represent?
This equation represents the rate at which energy is transferred by conduction through a given material.
What factors determine the rate of energy transfer by conduction?
The rate of transfer depends on the material's thermal conductivity (k), cross-sectional area (A), the temperature difference ($\Delta T$), and the material's length or thickness (L).
What is the equation for the amount of energy (Q) required to change the temperature of an object?
The equation is $Q=mc\Delta T$, where m is mass, c is specific heat, and $\Delta T$ is the change in temperature.
If two materials of equal mass absorb the same amount of energy, which one will experience a larger temperature change: the one with high specific heat or low specific heat?
The material with the low specific heat will experience a larger temperature change because less energy is required to raise its temperature.