Energy Unit Test Review

Front

What type of heat transfer occurs through electromagnetic waves?

Back

Radiation

Front

How does heat move from hot chocolate to a metal spoon handle?

Back

It moves through conduction, because heat is transferred directly from the hot chocolate to the spoon.

Front

What is the formula to calculate the amount of energy added to a substance when its temperature changes?

Back

Q = mcΔT

Front

If you have 10kg of gold heated from 50°C to 75°C, how much energy is added if c=449?

Back

112,250 J

Front

What describes the movement of heat when holding an ice cube in your hand?

Back

Heat will flow from her hand to the ice cube via conduction.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) due to density differences.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves.

Front

What does 'specific heat' refer to?

Back

Specific heat is the amount of heat required to raise the temperature of 1 kg of a substance by 1°C.

Front

What is the unit of specific heat?

Back

J/kg°C (Joules per kilogram per degree Celsius).