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- 1. Multiple Choice
Heat is also known as .....
thermal energy
power
gravitational potential energy
elastic potential energy
- 2. Multiple Choice
Thermal energy is transferred from ________ temperature to _____________ temperature.
lower, higher
higher, lower
same, same
higher, higher
- 3. Multiple Choice
Which of the following is NOT a means of thermal energy transfer?
conduction
boiling
radiation
convection
- 4. Multiple Choice
If a material conducts heat well, it is known as a _______
conductor
insulator
generator
incubator
- 5. Multiple Choice
In conduction, when one part of the object is heated, the particles ________
vibrate more vigorously, collide with adjacent particles and transfer energy
vibrate more slowly and transfer energy
expand due to the heat and allow the hotness to flow.
flow from one of the object to other.
- 6. Multiple Choice
When the objects in contact are in __________________, there is no heat transfer.
thermal equilibrium
stable equilibrium
unstable equilibrium
neutral equilibrium
- 7. Multiple Choice
Metals are better conductors because they have the following mechanisms of conduction:
molecular vibration
free electron diffusion
molecular vibration & free electron diffusion
- 8. Multiple Choice
In a liquid, the main method of thermal energy transfer is ....
conduction
convection
radiation
- 9. Multiple Choice
Conduction is a process through which thermal energy is transferred ________.
through the collisions of adjacent particles
through electromagnetic radiation
through movement of the medium
- 10. Multiple Choice
Convection is a process through which thermal energy is transferred ________.
through the collisions of adjacent particles
through electromagnetic radiation
through movement of the medium
- 11. Multiple Choice
Radiation is a process through which thermal energy is transferred ________.
through the collisions of adjacent particles
through electromagnetic radiation
through movement of the medium
- 12. Multiple Choice
When heated, warmer fluids _________.
increase volume, become less dense and rise.
decrease volume, become more dense and sink.
don't change.
- 13. Multiple Choice
When cooled, fluids _________.
increase volume, become less dense and rise.
decrease volume, become more dense and sink.
don't change.
- 14. Multiple Choice
Where should air-con be placed to ensure maximum cooling effect for a room?
on the floor
near the ceiling
at eye level
at waist level
- 15. Multiple Choice
Where should a heating element be placed to ensure maximum heating of a kettle?
at the base of the kettle
at the sides of the kettle
at the top of the kettle
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