Heat Test

For object A to have a higher absolute temperature than object B, which of the following must object A have?

• greater specific heat

• higher average internal potential energy

• greater mass

• higher average internal kinetic energy

According to kinetic molecular theory, as the temperature of a confined gas rises, which of the following characteristics of the gas molecules increases?

• size

• average speed

• density

• number

Which of the following has the most thermal energy?

• Lake

• Glass of water

• Pot of boiling water

• Ice Cube

Jill notices that the temperature in the science lab is much colder than the temperature in her history classroom. Which of the following is true?

• The air molecules in the science lab are moving faster than those in the history classroom.

• The air molecules in the science lab are moving slower than those in the history classroom.

• The air molecules in the science lab are moving at the same speed as those in the history classroom.

• The air molecules in the science lab are not moving while those in the history classroom are moving.

Heat transfer occurs

• in many directions at the same time regardless of the temperature difference between objects.

• at the same time from both warm objects to colder ones and from cold objects to warmer ones.

• between objects of different temperatures and goes only from warm objects to colder ones.

• between objects of different temperatures and goes only from cold objects to warmer ones.

Ileana has left a mug of hot tea on the counter to cool off so she can drink it safely. She watches the steam rising up out of the tea. Which type of thermal energy transfer is occurring as the steam rises into the surrounding air?

• conduction

• convection

• radiation

• sublimation

Heat transfer by conduction occurs when molecules do which of the following?

• flow as currents through liquids

• form waves that travel through space

• become less dense and rise

• collide with other molecules

Matter that has molecules which are very close together and moving slowly is most likely a:

• Solid

• Liquid

• Gas

Ella holds an ice cream cone in her hand. She soon notices that her hand begins to feel cold. What is different about the particles that make up her hand?

• They are getting larger.

• They are gaining average energy.

• They are moving slower on average.

• They are moving farther away.

Liang is warming a pot of soup on the stove. How is the motion of the particles in the soup different after the temperature of the soup increases?

• They move faster on average.

• They have less average energy.

• They move less freely.

• They vibrate and are close together.