Kinetic Energy & Temperature

What occurs when you touch a cold object?

• Heat from your hand moves into the cold substance, making your hand feel cold.

• The cold object absorbs heat from the environment, causing your hand to feel warm.

• Your hand remains at the same temperature, and you feel no change.

• The cold object releases energy, making your hand feel colder.

What is specific heat capacity?

• The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

• The total heat energy contained in a substance at a given temperature.

• The heat required to change a substance from solid to liquid at its melting point.

• The heat required to increase the temperature of a substance without changing its state.

What is kinetic energy?

• The energy an object possesses due to its motion.

• The energy stored in an object due to its position.

• The energy released during a chemical reaction.

• The energy required to start an object in motion.

How is kinetic energy calculated?

• KE = mv

• KE = 1/2 mv

• KE = 1/2 mv²

• KE = mv²/2

What happens to the kinetic energy of particles when a substance is heated?

• The kinetic energy of the particles decreases, causing them to move slower.

• The kinetic energy of the particles remains the same, and their movement is unaffected.

• The kinetic energy of the particles increases, causing them to move faster.

• The kinetic energy of the particles fluctuates randomly without a specific pattern.

What is temperature a measure of?

• The total mass of a substance

• The average kinetic energy of the particles in a substance

• The volume of a substance

• The density of a substance

What is the relationship between temperature and kinetic energy?

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

• Temperature has no effect on the kinetic energy of particles.

• As temperature decreases, kinetic energy increases.

• Kinetic energy is independent of temperature.

What is heat?

• A transfer of energy from one object to another due to a temperature difference.

• A type of energy that cannot be transferred.

• A measure of the total energy of an object.

• A form of energy that is always lost in a system.

What is conduction?

• The transfer of heat through direct contact between materials.

• The process of heat transfer through fluids by the movement of the fluid itself.

• The transfer of heat through electromagnetic waves.

• The process of heat transfer that occurs in solids only.

What is convection?

• The transfer of heat through the movement of fluids (liquids or gases) due to differences in density.

• The process of heat transfer through direct contact between materials.

• The transfer of heat through electromagnetic waves.

• The movement of air caused by temperature differences in the atmosphere.