Unit 16 Review

Front

What happens when a hot object is placed in contact with a cooler object?

Back

Heat will flow from the hot object to the cooler object until thermal equilibrium is reached.

Front

Define specific heat capacity.

Back

Specific heat capacity is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Front

Why does sand heat up faster than water at the beach?

Back

Sand has a lower specific heat than water, meaning it requires less energy to increase its temperature.

Front

What temperature must Block B be at for no heat flow to occur with Block A at 125°C?

Back

Block B must also be at 125°C for no heat flow to occur.

Front

Which material heats up the fastest: copper, granite, iron, or basalt?

Back

Copper heats up the fastest due to its high thermal conductivity.

Front

What does q_sys represent in thermodynamics?

Back

q_sys represents the heat exchange within the system being studied.

Front

What does q_surr represent in thermodynamics?

Back

q_surr represents the heat exchange with the surroundings.

Front

If a system absorbs heat, what can be said about q_sys?

Back

If a system absorbs heat, q_sys is positive.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in thermal contact no longer exchange heat, as they are at the same temperature.

Front

Explain why heat flows from a hotter object to a cooler object.

Back

Heat flows from a hotter object to a cooler object due to the second law of thermodynamics, which states that heat energy naturally moves from areas of higher temperature to areas of lower temperature.