Heat, Temperature & Thermal Energy

Front

What is the definition of temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of all the particles in a substance.

Front

What is the formula for calculating temperature change?

Back

Temperature change (ΔT) = Final temperature - Initial temperature.

Front

What is absolute zero?

Back

Absolute zero is the theoretical temperature at which a substance has minimum thermal energy, defined as 0 Kelvin or -273.15°C.

Front

What does the law of conservation of energy state?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

How does friction convert energy?

Back

Friction converts mechanical energy into thermal energy due to the interaction between surfaces.

Front

What happens to molecular motion as temperature increases?

Back

As temperature increases, the kinetic energy of the molecules increases, causing them to move faster.

Front

What is the difference between heat and temperature?

Back

Heat is the transfer of thermal energy between substances, while temperature is a measure of the average kinetic energy of particles.

Front

What is the significance of the freezing point?

Back

The freezing point is the temperature at which a liquid turns into a solid, typically 0°C for water.