Question

which example best demonstrates radiation? a dogs feet get hot while walking across sand. a cat becomes warmer when sleeping in sunlight. a child dissolves sugar by stirring it in water. an adult watches pasta noodles float and sink in boiling water.

Explanation:

To determine the example of radiation, we analyze each option:

• A dog’s feet getting hot on sand is conduction (heat transfer through direct contact).
• Dissolving sugar by stirring is a chemical/physical process (not heat transfer via radiation).
• Pasta floating/sinking in boiling water relates to density and convection, not radiation.
• A cat warming in sunlight is radiation, as heat from the sun travels as electromagnetic waves (radiation) to warm the cat.

Answer:

A cat becomes warmer when sleeping in sunlight.