Related Content: Learn the Environment When Clouds, Rain, and Snow Are Made

After manufacturing a simple temperature measuring device using an underwater temperature sensor and an air injection cap, you can measure the temperature after putting air into the plastic bottle and when the inside of the plastic bottle becomes cloudy after opening the lid, measuring the temperature change before and after opening the lid, and understanding the temperature decrease and condensation of water vapor.

The condensation of water vapor and the blurring of the inside of the PET bottle can be explained in connection with the process of cloud formation.