Unit Test

What occurs as the kinetic energy of the molecules in a substance increases?

• Temperature decreases

• Temperature stays the same

• Potential energy increases

• Molecules move faster

• Temperature increases

All objects in motion are said to have what kind of energy?

• Kinetic Energy

• Potential Energy

• Thermal Energy

• Force

Which of the following will increase as a material is heated and changes temperature?

• Molecules potential energy

• Molecules kinetic energy

• Molecules charge

• Molecules mass

What type of phase change involves an increase in kinetic energy?

• Water to Ice

• Liquid to Solid

• Ice to Water

• Gas to solid

Which are examples of conduction?

• a lizard warming its belly on a hot rock

• heat from a stovetop transferring heat to a metal pot

• heat or light from the sun

• steam you see when drinking a cup of hot cocoa

• a hot air balloon rising

Heat moves from _____ to the _______ until the ice cube melts in the water and they reach a thermal equilibrium.

• The thermal energy of the tea moved from inside the cup to the surrounding air.

• The thermal energy of the cool classroom moved from the room into the tea.

• Condensed water vapor from the air formed around the rim of the cup, which then

  transferred thermal energy into the tea.

• Evaporation of the tea resulted in less tea in the cup, which decreased the amount of

  thermal energy in the cup.

Why does a pan of warm water eventually become the same temperature as the room it is in?

• Heat from the air flows into the water until they are the same temperature.

• Heat from the water flows into the air until they are the same temperature.

• Coldness from the water evaporates into the air until they are the same temperature.

• Coldness from the air flows into the water until they are the same temperature.

Label each type of thermal heat transfer

• A – conduction; B – radiation; C – convection

• A – radiation; B – conduction; C – convection

• A – conduction; B – convection; C – radiation

• A – convection; B – conduction; C – radiation

When it is cold outside, wearing a coat prevents....

• conduction, the transfer of heat from a person's body to the atoms in the air.

• convection, the transfer of heat through empty space.

• radiation, the transfer of heat to fluids, such as water vapor in the air.

• radiation, the transfer of heat in circular a pattern from the person's body to the air.