GENERAL KNOWLEDGE

ICE CUBES ARE ADDED TO A GLASS OF WARM WATER. THE GLASS AND WATER ARE COOLED BY

  • A. conduction only
  • B. convection only
  • C. conduction and convection ✓
  • D. convection and radiation

 

The answer to the question is: C. conduction and convection

When ice cubes are added to a glass of warm water, the cooling process involves both conduction and convection. Conduction is the transfer of heat through a material, while convection is the transfer of heat through the movement of fluids.

Conduction occurs as the ice cubes come into contact with the warm water in the glass. The heat from the water is transferred to the ice cubes, causing them to melt and cool the surrounding water. This direct transfer of heat through physical contact is an example of conduction.

Convection, on the other hand, occurs as the cooler water near the ice cubes sinks to the bottom of the glass, displacing the warmer water which then rises. This creates a circulation pattern within the water, allowing for more efficient heat transfer and resulting in a more uniform cooling of the entire glass of water.

Therefore, when ice cubes are added to a glass of warm water, both conduction and convection play significant roles in cooling the glass and water.

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