Questions: Question 103 1 pts The cooling effect inside a refrigerator is produced by an electric motor that converts electrical energy to internal energy. compressing the refrigeration gas. vaporizing the refrigeration liquid. proper insulation. exchanging warmer air with colder air.

Solution Steps

To determine how the cooling effect inside a refrigerator is produced, we need to understand the basic principles of refrigeration. Refrigerators work by removing heat from the interior and releasing it outside, typically through a cycle involving a refrigerant.

Let's analyze each option to see which one correctly describes the cooling process:

• An electric motor that converts electrical energy to internal energy: This is not correct. The motor drives the compressor, but the cooling effect is not directly produced by converting electrical energy to internal energy.
• Compressing the refrigeration gas: This is part of the refrigeration cycle, but compression alone does not produce the cooling effect.
• Vaporizing the refrigeration liquid: This is the correct answer. The refrigerant absorbs heat from the refrigerator's interior as it vaporizes, producing the cooling effect.
• Proper insulation: Insulation helps maintain the temperature but does not produce the cooling effect.
• Exchanging warmer air with colder air: This is not how refrigerators work; they remove heat from the air inside.

Final Answer