Temperature, Heat, and Heat Exchange

Which best describes temperature?

• It is equal to the heat difference between two objects

• It is proportional to the total energy in an object

• It is proportional to the average kinetic energy of particles in an object

• It is equal to an object's specific heat capacity

Energy transferred from a higher temperature object to a lower temperature object is _______.

• heat

• kinetic energy

• thermal energy

• internal energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is the sum of the kinetic and potential energies of an object?

• Heat energy

• Specific heat energy

• Thermal energy

• Temperature

Which thermal exchange process does not require a medium?

• Conduction

• Convection

• Radiation

• Evaporation

Which thermal exchange process carries thermal energy through boiling water as it heats up on top of a stove?

• Conduction

• Convection

• Radiation

• Evaporation

Two isolated objects, at different temperatures, are put in contact with each other. Which of the following is/ are true when the system reaches thermal equilibrium?

I. The cool object gains the same amount of heat lost by the warm object.

II. Both objects will have the same final temperature

III. Both objects lose the same amount of heat

• I only

• II only

• I and II only

• II and III only

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Two beakers A & B contain water at a temperature of 40 ^oC. Beaker A contains 100 g of water and beaker B contains 250 g of water. Which of the following statements is true about them?

I. Beaker A has less thermal energy than Beaker B

II. Both beakers A and B have the same thermal energy

III. The water molecules in both beakers A and B have the same average kinetic energy

• I only

• II only

• III only

• I and III only

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Nicole has a bottle of water. How can she increase the thermal energy of the water?

• She can pour the water into a larger bottle.

• She can increase the temperature of the water.

• She can place the bottle of water in the refrigerator.

• She can divide the water between tow identical containers.

How does the thermal energy of the liquid in the larger beaker compare to the thermal energy of the liquid in the smaller beaker?

• The liquid in the larger beaker has less thermal energy than the liquid in the smaller beaker.

• The liquid in the larger beaker has more thermal energy than the liquid in the smaller beaker.

• The liquid in the larger beaker has the same amount of thermal energy as the liquid in the smaller beaker.

• The exact volume of the liquid in each beaker must be known to compare the thermal energy of the liquids.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Scout puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the picture. Which process takes place when the objects come together?

• The temperature of the spoon increases, but its thermal energy does not change.

• Energy in the form of heat is transferred by conduction from the warmer mashed potatoes to the cooler spoon.

• The thermal energy of both the mashed potates and the spoon increase as the energy in the form of heat is transferred between them.

• The average temperature of the spoon does not change.