20. Heat and Temperature

Which of the following lists correctly identifies the three main mechanisms by which thermal energy can be transferred?

Which method of heat transfer does not require a medium or physical contact to transfer heat?

When food is heated in a microwave oven, which type of heat transfer is primarily responsible for the heating process?

Which process describes the transfer of energy through the bulk movement of a fluid or gas?

When the Sun warms the sand on a beach, which type of heat transfer is primarily responsible for this process?

When cheetahs stay in the shade to avoid heat from the $\mathrm{Sun}$, which type of heat transfer are they primarily avoiding?

Which of the following lists correctly identifies the three primary forms of heat transfer?

Which of the following lists correctly identifies the three primary mechanisms by which $\mathrm{heat}$ can be transferred?

In conduction, things must $\_\_\_\_\_\_\_\_\_\_$ for heat to transfer using this type of transfer.

300g of water at 40°C is in an insulated cup. What mass of copper at 500°C must be added to heat the water to 60°C?

Which of the following best describes radiation heat transfer?

Which primary type of heat transfer is used by most household clothes dryers to dry clothes?

When a metal spoon is placed in a pot of boiling water, which mechanism is primarily responsible for the transfer of heat from the water to the spoon?

Which of the following actions would decrease $Q$ (heat transfer) between two objects?