Benchmark 3 review

How does heat flow between objects of different temperatures?

• Heat moves from the cooler object to the warmer object until their temperatures are equal.

• Heat always moves from the warmer object to the cooler object until their temperatures are equal.

• Heat flows only if the temperature difference is significant.

• Heat does not flow between objects of different temperatures.

What is specific heat?

• The amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

• The total heat energy contained in a substance.

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

• The heat required to raise the temperature of 1 liter of water by 1 degree Celsius.

How does potential energy change to kinetic energy in a swing?

• As the swing remains at the highest point, potential energy is maintained.

• As the swing falls from its highest point, potential energy is converted into kinetic energy.

• As the swing moves back and forth, potential energy is lost.

• As the swing is pushed, kinetic energy is transformed into potential energy.

What are the three main processes by which thermal energy is transferred?

• Conduction, radiation, and convection.

• Evaporation, condensation, and precipitation.

• Conduction, evaporation, and radiation.

• Convection, sublimation, and conduction.

What is temperature?

• Temperature is a measure of the average energy of all moving particles in a substance.

• Temperature is the degree of hotness or coldness of an object.

• Temperature is the amount of heat energy stored in a substance.

• Temperature is the measure of the density of a substance.

Define kinetic energy.

• Kinetic energy is energy in the form of motion.

• Kinetic energy is energy stored in an object at rest.

• Kinetic energy is the energy of an object due to its temperature.

• Kinetic energy is energy that can be converted into potential energy.

What does the law of conservation of energy state?

• Energy can be created and destroyed.

• Energy cannot be created or destroyed; it can only change forms or be transferred.

• Energy is always constant and cannot change forms.

• Energy can be created from nothing.

What are conductors?

• Materials that readily transfer thermal energy, such as metals.

• Materials that do not conduct electricity or heat.

• Materials that absorb thermal energy without transferring it.

• Materials that are used to insulate against heat and electricity.

Define conduction.

• The transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temperatures touch.

• The process of heat transfer through electromagnetic waves.

• The movement of particles in a gas that leads to temperature changes.

• The circulation of fluids caused by differences in temperature and density.

How does a thermometer measure temperature?

• By measuring the average energy of the moving particles in the substance being tested.

• By calculating the pressure of the gas inside the thermometer.

• By observing the color change of a liquid inside the thermometer.

• By using a digital sensor to detect temperature variations.