Question

identifying conditions needed for heat flow this mug is made of two layers of glass separated by empty space. it is more effective than a ceramic mug at keeping the beverage warm. why is this design more effective? the beverage has a higher temperature than the air. the air is warmer than the mug. the particles that make up the glass have no thermal energy. the empty space has no particles to transfer thermal energy.

Explanation:

Heat transfer occurs through particles. An empty space lacks particles, reducing heat transfer and keeping the beverage warm.

Answer:

The empty space has no particles to transfer thermal energy.