fisica test thermodinamics

    Master this deck with 26 terms through effective study methods.

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    Created by @nahuel

    What is thermal energy?

    Total kinetic energy of particles in a system.

    What defines temperature?

    Average kinetic energy of particles.

    What is thermal equilibrium?

    State where systems in contact have the same average internal energy.

    How does heat flow occur?

    From high temperature to low temperature systems.

    What is conduction?

    Heat transfer by direct contact between systems.

    What is radiation?

    Heat transfer via electromagnetic waves.

    What is convection?

    Heat transfer via fluid flow.

    How do conductors differ from insulators?

    Conductors allow heat flow; insulators do not.

    What happens to particles when heat is added?

    They gain kinetic energy and move faster.

    What is absolute zero?

    The lowest possible temperature, 0 K.

    What is the significance of thermal conductivity?

    It measures a material's ability to transfer heat.

    What is the formula for heat flow rate?

    H = k * A * ΔT / L.

    What happens to materials when heated?

    They expand in all directions.

    What role do bimetallic strips play?

    They control heating or cooling devices by curving with temperature changes.

    What is the relationship between heat and temperature difference?

    Heat increases with greater temperature differences.

    How does thickness affect heat flow?

    Increased thickness reduces heat flow.

    What happens to heat flow if the area is doubled?

    Heat flow also doubles.

    What is the thermal conductivity of brick?

    0.71 J/s⋅m⋅°C.

    What did James Joule discover?

    Heat and mechanical energy are equivalent.

    How is a calorie defined?

    Heat to raise 1 cm³ of water by 1°C.

    What distinguishes food calories from regular calories?

    Food calories are 1,000 times regular calories.

    What is specific heat?

    Heat needed to raise 1 gram by 1°C.

    What does the law of heat exchange state?

    Heat lost by one system equals heat gained by another.

    What is the specific heat of water?

    4186 J/kg°C.

    What happens when two systems reach thermal equilibrium?

    They stabilize at a common temperature.

    How do you calculate temperature change with added heat?

    Use Q = mcΔT to find ΔT.