Thermal energy - JSS2 Basic science Past Questions and Answers - page 1
What is thermal energy?
Energy from light
Energy from heat
Energy from motion
Energy from electricity
Which of the following describes thermal energy?
Potential energy stored in batteries
Energy from wind
Energy from the movement of particles
Energy from sound
How does heat flow occur?
Only through conduction
Only through conduction
Only through radiation
Through conduction, convection, and radiation
Which of the following is not a mechanism of heat flow?
Conduction
Convection
Friction
Radiation
What determines the direction of heat flow?
Temperature difference
Color difference
Size difference
Weight difference
In which direction does heat flow?
From low temperature to high temperature
From high temperature to low temperature
It does not flow
It flows in all directions
What type of heat flow occurs when you hold a metal spoon in hot soup?
Conduction
Convection
Radiation
Absorption
Which type of heat flow does not require a medium to transfer energy?
Conduction
Convection
Radiation
All of the above
What happens when two objects at different temperatures are brought into contact?
Both objects get colder
Both objects get warmer
The colder object gets warmer and the warmer object gets colder
There is no change in temperature
What are the three main mechanisms of heat flow?
The three main mechanisms of heat flow are conduction, convection, and radiation. Conduction involves the transfer of heat through direct contact between particles. Convection occurs through the movement of fluids (liquids or gases). Radiation involves the transfer of heat through electromagnetic waves.