El calor

1. What is heat? A) Energy in motion B) Transfer of thermal energy C) A form of matter D) A measure of temperature

• A source of light

• A type of fluid

• A form of energy

• B) Transfer of thermal energy

2. Heat transfer can occur through: A) Conduction, convection, and radiation B) Only conduction C) Only radiation D) Only convection

• Only conduction and radiation

• Only conduction and convection

• Only convection and radiation

• A) Conduction, convection, and radiation

3. Which of the following is a good conductor of heat? A) Wood B) Plastic C) Metal D) Air

• C) Metal

• D) Water

• A) Rubber

• B) Glass

4. What phenomenon describes convection? A) Heat transfer in liquids and gases by fluid movement B) Heat transfer through a solid material C) Heat transfer through electromagnetic waves D) None of the above

• A) Heat transfer in liquids and gases by fluid movement

• C) Heat transfer in stationary fluids without movement

• B) Heat transfer through radiation in a vacuum

• A) Heat transfer in solids by direct contact

5. Thermal radiation is characterized by: A) Needing a material medium to transfer heat B) Transferring heat through electromagnetic waves C) Only occurring in solids D) Being the same as conduction

• C) Only occurring in solids

• A) Needing a material medium to transfer heat

• B) Transferring heat through electromagnetic waves

• D) Being the same as conduction

6. What is conduction? A) Heat transfer through fluids B) Heat transfer through direct contact C) Heat transfer through waves D) None of the above

• B) Heat transfer through direct contact

• D) Heat transfer through radiation

• C) Heat transfer through waves

• A) Heat transfer through solids

7. Which material is a poor conductor of heat? A) Copper B) Aluminum C) Rubber D) Silver

• C) Rubber

• A) Gold

• B) Iron

• D) Steel

8. In which process does warm air rise? A) Conduction B) Convection C) Radiation D) None of the above

• D) Precipitation

• B) Convection

• A) Evaporation

• C) Sublimation

9. What type of heat transfer occurs from the sun to the Earth? A) Conduction B) Convection C) Radiation D) None of the above

• E) Insulation

• G) Reflection

• C) Radiation

• F) Absorption

10. Which of the following is an example of convection? A) A metal spoon getting hot in a pot of soup B) The warmth felt from a campfire C) Warm air rising from a heater D) Ice melting in a drink

• Bubbles rising in boiling water

• A candle melting on a table

• C) Warm air rising from a heater

• A metal spoon getting cold in a pot of soup