Front

What are the three methods of heat transfer?

Back

Conduction, Convection, and Radiation.

Front

Define conduction in the context of heat transfer.

Back

Conduction is the transmission of heat through direct contact between materials.

Front

What is convection and how does it occur?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

Explain the principle of specific heat capacity.

Back

Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

Front

Calculate the heat (Q) released when a substance cools down using the formula Q = m C ΔT.

Back

Q = mass (m) × specific heat capacity (C) × change in temperature (ΔT).

Front

What is the specific heat of water?

Back

The specific heat of water is approximately 4.18 J/g°C.

Front

How does temperature affect the energy of molecules?

Back

As temperature increases, the energy of molecules increases, leading to greater molecular motion.

Front

What is the role of thermal conductivity in conduction?

Back

Thermal conductivity is a measure of a material's ability to conduct heat; higher thermal conductivity means better heat transfer.

Front

Describe an example of convection in everyday life.

Back

An example of convection is boiling water, where hot water rises to the top and cooler water moves down.

Front

What happens to the molecules in a substance when it is heated?

Back

When a substance is heated, its molecules gain energy, move faster, and typically spread apart.