Lesson 3 Thermal Energy Transfers

When two materials that are in contact have the same temperature, the materials are said to be in thermal __________.

• equilibrium
• exchange
• conduction
• convection

Heat always moves from ___________ objects to _________ objects.

• hot / cold
• cold / hot
• room temp / hot
• hot / hotter

Hot water is pouted into a mug and the mug gets hot. This is an example of which type of energy transfer?

• conduction
• radiation
• convection
• This is not an energy transfer.

Radiation transfers energy through ___________.

• contact
• electromagnetic waves
• air
• vaporization

A hot iron is turned off and cools down to room temperature. The iron cools because _____.

• thermal energy is transferred from the warm iron to the cooler room
• the iron does not hold heat very well
• the room transfers cold energy to the iron
• the thermal energy is destroyed during an interaction with the room

Energy transferring from the Sun to warm up the Earth would be an example of __________.

• radiation
• conduction
• convection
• thermal equilibrium

Which type of energy transfer is responsible for the movement of magma in Earth's interior?

• conduction
• convection
• radiation
• melting

If you leave toast fresh from the toaster out on a plate, it cools off. This is an example of a(n) _________ system.

• open
• closed
• thermal
• chemical