Thermal Energy

1. The first law of thermodynamics says

• increase in thermal energy = work done + heat added
• decrease in thermal energy = work done + heat added
• increase in thermal energy = work done
• increase in thermal energy = heat added

2. Thermal energy is transferred slowly through a thermal

• insulator
• conductor
• conditioner
• thermos

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3. This figure shows an example of which type of energy transfer?

• conduction
• convection
• radiation
• insulation

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4. The amount of heat needed to raise the temperature of 1 kg of the material by 1 degree Celsius is called the _________.

• specific heat
• thermal insulation capacity
• thermal energy
• total energy

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5. The energy transfer when you touch a block of ice with your hand would be described as

• thermal energy leaving the ice and coming towards your hand
• thermal energy stays where it is
• thermal energy leaving your hand and going towards the ice
• thermal energy goes both ways equally

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6. A device that absorbs radiant energy from the sun.

• air conditioner
• refrigerator
• solar collector
• heat engine

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7. ___ is the transfer of energy by electromagnetic waves.

• Conduction
• Radiation
• Contact
• Convection

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8. ____ is the transfer of thermal energy by collisions between particles in matter.

• contact
• convection
• radiation
• conduction

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9. __ is thermal energy that is transferred from something at a higher temperature to something at a lower temperature.

• Heat
• State
• Plasma
• Charge

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10. The sum of the kinetic and potential energy of the particles in an object is the __ of the object.

• thermal energy
• temperature
• heat
• mechanical energy