🎫 Lesson 2.1 Thermal Energy Exit Ticket (50 pts.)

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

In which direction does heat flow between two objects?

Back

Heat flows from the object with a higher temperature to the object with a lower temperature.

Front

What happens to particles at absolute zero?

Back

At absolute zero, particles stop moving and have minimum thermal energy.

Front

How is average kinetic energy calculated?

Back

Average kinetic energy is calculated by summing the kinetic energies of all particles and dividing by the number of particles.

Front

What is kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion.

Front

What is the relationship between temperature and kinetic energy?

Back

As temperature increases, the average kinetic energy of the particles in a substance also increases.

Front

What is the significance of absolute zero in thermodynamics?

Back

Absolute zero is the theoretical temperature at which a system's entropy reaches its minimum value, and all particle motion ceases.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

What factors affect the thermal energy of a substance?

Back

The thermal energy of a substance is affected by its mass, temperature, and the type of material.