Thermal Energy, Heat, & Temperature

Thermal energy refers to what in an object?

• Only the heat content of the object
• Only the kinetic energy of the particles
• The energy transferred from the object to its surroundings
• The total kinetic and potential energy of all the particles in the object

All objects have this type of energy due to the arrangement of particles. Which is it?

• Only kinetic energy
• Only potential energy
• Both kinetic and potential energy
• Electrical energy

Heat transfers between two objects and what exactly happens?

• Heat transfers until both objects are the same temperature
• Heat always flows from the cooler object to the warmer object
• Heat transfers continuously, even when the objects are at the same temperature
• Heat stops transferring once the cooler object reaches room temperature

The average kinetic energy of an object changes when it cools, which of the following describes this change?

• It increases
• It decreases
• It stays the same
• It becomes constant

Which helps make water vapor happen?

• A decrease in thermal energy
• A decrease in temperature
• Thermal energy, temperature, and a change of state
• A constant temperature

Scientific heat is...

• The energy transferred from a hot object to a cooler one
• The temperature of an object
• The average kinetic energy of particles
• The energy transferred between two systems at different temperatures

When thermal energy increases, matter......

• cools down

• melts

• contracts

• solidifies

Temperature is used to measure what about a substance?

• The total amount of thermal energy in the substance
• The average kinetic energy of the particles in the substance
• The amount of heat in the substance
• The potential energy of the particles

The temperature of a substance changes during a change of state, which best describes that change?

• It stays the same
• It increases
• It decreases
• It fluctuates

A larger amount of matter requires more thermal energy to heat or cool compared to a smaller amount of the same substance, why?

• It has fewer particles and less stored potential energy
• It has more particles and more stored potential energy, requiring more energy to change its temperature
• It requires more heat transfer to cool down
• It has a higher specific heat capacity