Thermal Energy

What is the relationship between temperature and the kinetic energy of particles in a substance?

• As temperature increases, kinetic energy decreases.

• As temperature increases, kinetic energy increases.

• Temperature and kinetic energy are unrelated.

• As temperature decreases, kinetic energy increases.

Tags

TEKS.SCI.7.8C

Which of the following best describes thermal equilibrium?

• When two substances have different temperatures.

• When thermal energy moves from cooler to warmer substances.

• When all substances in a system reach the same temperature.

• When thermal energy stops moving.

Tags

TEKS.SCI.7.8B

Which method of thermal energy transfer involves the movement of fluids?

• Conduction

• Convection

• Radiation

• Insulation

Tags

TEKS.SCI.7.8A

Explain how the kinetic energy of particles changes when a substance is heated.

• Particles move slower and kinetic energy decreases.

• Particles move faster and kinetic energy increases.

• Particles stop moving and kinetic energy remains constant.

• Kinetic energy is not affected by heating.

Tags

TEKS.SCI.7.8C

Describe the process of conduction in thermal energy transfer.

• Energy is transferred through electromagnetic waves.

• Energy is transferred through the movement of fluids.

• Energy is transferred through direct contact between particles.

• Energy is transferred through sound waves.

Tags

TEKS.SCI.7.8A

What happens to the temperature of a substance when it reaches thermal equilibrium with its surroundings?

• It continues to increase.

• It continues to decrease.

• It remains constant.

• It fluctuates randomly.

Tags

TEKS.SCI.7.8B

Which of the following is an example of radiation?

• Heat from a stove warming a pot.

• Warm air rising in a room.

• Sunlight warming your skin.

• Ice melting in your hand.

Tags

TEKS.SCI.7.8A

How does thermal energy transfer through convection?

• By direct contact between particles.

• By the movement of electromagnetic waves.

• By the circulation of fluids due to temperature differences.

• By the vibration of particles in place.

Tags

TEKS.SCI.7.8A

What is the effect of increasing temperature on the kinetic energy of gas particles?

• Kinetic energy decreases.

• Kinetic energy remains the same.

• Kinetic energy increases.

• Kinetic energy fluctuates.

Tags

TEKS.SCI.7.8C

Identify the direction of thermal energy transfer between two objects at different temperatures.

• From cooler to warmer object.

• From warmer to cooler object.

• In both directions equally.

• No transfer occurs.

Tags

TEKS.SCI.7.8B