Question 9
An experiment was conducted to observe the relationship between temperature and air pressure.
The figure below shows the set-up where the flasks were covered by the cloths at different temperatures.

The following observation of the set-ups was made two minutes after the cloth was placed on the flask.
- Set-up 1: No changes were observed
- Set-up 2: Bubbles observed around the tube
- Set-up 3: Water rose in the tube
a. Explain the observations made in each set-up. [3 points]
b. Based from the experiment, what is the relationship between temperature and air pressure? Explain. [2 points]
The figure below shows the set-up where the flasks were covered by the cloths at different temperatures.

The following observation of the set-ups was made two minutes after the cloth was placed on the flask.
- Set-up 1: No changes were observed
- Set-up 2: Bubbles observed around the tube
- Set-up 3: Water rose in the tube
a. Explain the observations made in each set-up. [3 points]
b. Based from the experiment, what is the relationship between temperature and air pressure? Explain. [2 points]