Heat

Question 1

What is Conduction?

Answer 1

The process of heat transfer through direct contact between particles of a substance. e.g touching a hot frying pan

Question 1

How does conduction occur within a material?

Answer 1

Rapidly moving particles collide with adjacent particles, transferring a portion of their kinetic and thermal energy, until a point of thermal equilibrium is reached.

Question 2

What is Convection?

Answer 2

The process of heat transfer through the movement of fluids (liquids or gases).

Question 3

How does convection occur in a fluid?

Answer 3

Heated fluid becomes less dense, rises, and carries heat, while cooler fluid becomes denser, sinks, forming a cyclical motion, completing the convection cycle. (also known as convection current)

Question 4

What is specific heat capacity?

Answer 4

The amount of heat energy required to raise the temperature of a unit mass of a substance by one degree Celsius.

Question 5

How is specific heat capacity measured?

Answer 5

It is measured in units of joules per gram per degree Celsius (J/g°C).