When snow changes directly to a gas in a very cold region, the process is called

Rationale

Sublimation occurs when snow changes directly to a gas in a very cold region.

Sublimation is the phase transition in which a solid turns directly into a gas without passing through the liquid phase. This process can occur under specific conditions, particularly in cold environments where temperatures can remain below freezing.

A (evaporation) YOUR ANSWER

Evaporation refers to the process where liquid water transforms into vapor, typically occurring at temperatures above freezing. Since the question specifies the transition from snow (a solid) directly to gas, evaporation does not apply in this scenario as it involves a liquid phase.

B (condensation) YOUR ANSWER

Condensation is the reverse process of evaporation, where gas (water vapor) turns into a liquid upon cooling. This does not describe the transition of snow into gas, as it pertains to the formation of liquid water rather than the direct conversion of solid snow.

C (sublimation) CORRECT

Sublimation is the direct transition from solid to gas. In the context of snow changing into vapor in a cold region, sublimation accurately describes the phenomenon without passing through the liquid stage, making it the correct answer.

D (decomposition) YOUR ANSWER

Decomposition refers to the process of breaking down a compound into simpler substances, typically involving chemical reactions. This term is unrelated to the physical phase change of snow transitioning into gas, as it involves chemical changes rather than physical state changes.

Conclusion

The process of snow changing directly into gas is known as sublimation, which is a unique phase transition bypassing the liquid state. Understanding sublimation is essential in various fields, including meteorology and environmental science, where it plays a role in the water cycle in cold regions. The other choices—evaporation, condensation, and decomposition—describe different processes that do not apply to the direct transformation of snow into gas.

When snow changes directly to a gas in a very cold region, the process is called

Sublimation occurs when snow changes directly to a gas in a very cold region.

Related Questions

Related Quizzes

How familiar were you with this question?

Report an Issue

Rate this Practice Test