MACS 609 Certification Practice Exam

What is one effect of some refrigerant gases released into the atmosphere?

1. They enhance plant growth

2. They contribute to trapping heat

3. They reduce atmospheric pressure

4. They purify surrounding air

The correct answer is: They contribute to trapping heat

The correct answer identifies that some refrigerant gases contribute to trapping heat in the atmosphere. This phenomenon is primarily due to the greenhouse effect, where certain gases, including specific refrigerants, have the ability to absorb infrared radiation. When these gases are released, they can linger in the atmosphere for extended periods and impact the climate by enhancing the natural greenhouse effect, leading to global warming. In contrast, other options do not accurately describe the impact of refrigerant gases. They do not enhance plant growth as a primary function; in fact, their presence can be detrimental to ecosystems. Moreover, while some gases may affect atmospheric pressure locally, refrigerants are not generally associated with a significant reduction of atmospheric pressure on a global scale. Finally, refrigerant gases do not purify surrounding air; in fact, their release can contribute to air quality issues rather than improvements. This solidifies the understanding that refrigerants play a role in climate change by engaging in heat retention within the atmosphere.