Question

A thermos is designed to slow the transfer of thermal energy by radiation, convection, and conduction.

A)True
B)False

Answer 1

A thermos is designed to slow the transfer of thermal energy by radiation, convection, and conduction. It achieves this through features such as a vacuum, silvering of the walls, a thin-walled glass neck, a rubber support, an air layer, and a stopper.

Step-by-step explanation:

A thermos is designed to slow down the transfer of thermal energy by radiation, convection, and conduction. It achieves this by incorporating several key features:

• The vacuum between the two walls of the thermos serves as an insulator, preventing heat transfer by conduction and convection.
• The silvering of the walls reflects thermal radiation, reducing heat transfer by radiation.
• The thin-walled long glass neck minimizes heat transfer by conduction.
• The rubber support acts as a cushion and helps minimize heat transfer.
• The air layer between the inner and outer walls of the thermos further reduces heat transfer by conduction and convection.
• The stopper provides an airtight seal, preventing heat transfer through air convection.