Assemble the Thermometer Structure

What happens here

Insert one end of the drinking straw into the bottle containing the colored alcohol. Ensure the straw is submerged in the liquid but does not touch the bottom of the bottle. Then, use modeling clay to create a tight, airtight seal around the straw at the neck of the bottle. This seal is crucial for the thermometer to function correctly, as it allows changes in air pressure above the liquid to only occur through the straw.

Goal: Create an airtight setup that allows liquid to rise and fall in the straw.