Question

question #12
the diagram shows cold juice inside a glass.
image of a glass with cold juice
what caused the water droplets to form on the outside of the glass?
a precipitation came from the surrounding air to the outside of the glass.
b the water vapor in the air outside of the glass condensed when it came in contact with the cooler surface of the glass.
c the water vapor in the air outside of the glass evaporated when it came in contact with the cooler surface of the glass.
d moisture came from the inside of the glass and stayed on the outside of the glass.

Explanation:

• Option A: Precipitation is rain, snow, etc., not how droplets form on a glass. Eliminate A.
• Option B: Cold glass cools surrounding air’s water vapor, causing condensation (gas to liquid), forming droplets. This matches the process.
• Option C: Evaporation is liquid to gas, but we need gas to liquid (condensation) for droplets. Eliminate C.
• Option D: Moisture from inside (juice) can’t pass through the glass to form outside droplets. Eliminate D.

Answer:

B. The water vapor in the air outside of the glass condensed when it came in contact with the cooler surface of the glass.