Question

This question has two parts. Use the information to answer Part A and Part B.

Information 1
Students conduct an experiment to understand how clouds form.



,begin bold,Cloud in a Bottle Experiment,end bold,

Pour 30 milliliters of warm water into a 2 liter plastic bottle.
Light a match. Blow it out and drop it in the bottle.
Screw the lid on the bottle.
Squeeze the sides of the bottle and release. Repeat while observing.
The students observe a cloud forming and disappearing as they squeeze and release the bottle.

Question 1
,begin emphasis,Part A,end emphasis,
When does the cloud form?

Question 1 Answer options with 2 options
A.
when students release the bottle

B.
when students squeeze the bottle

Question 2
,begin emphasis,Part B,end emphasis,
Why does this action result in water molecules condensing into a cloud? Select one choice from each set to answer the question.

Question 2 Response area with 4 radio buttons within 2 groups.
The air pressure ,begin bold,[increased / decreased],end bold,, which caused the temperature to ,begin bold,[increase / decrease],end bold,.

Answer 1

Part A: A — when students release the bottle.

Part B: The air pressure decreased, which caused the temperature to decrease.

Brief explanation: Releasing the squeezed bottle lets the air expand, lowering its pressure and temperature. The cooler air can no longer hold as much water vapor, so vapor condenses on smoke particles and forms a visible cloud.