How does the temperature in the surrounding environment affect how the balloon will rise ?

based on the answer should i launch on a hot day or a cold day?

1 Answer
May 7, 2018

Launching on a cold day will help the balloon rise.

Explanation:

For the balloon to rise the density of the air in the balloon must be less than the density of the air in the environment. The greater the difference in density between the gas in the balloon the density of the environment the more lift that will be created.

The Volume of the balloon can be increased by increasing the temperature of the gases in the balloon. The higher the temperature the greater the volume the lower the density. Therefore the difference in the temperature of the gas in the balloon and the temperature in the environment is critical.

The colder the temperature in the environment the easier it will be to create a larger difference in the temperature of the gas in the balloon. So a cold morning is the best time to launch a balloon.