Effect of extreme temperature on battery life
The hypothesis that a battery will supply power for a shorter length of time when its temperature falls, is proven to be true.
Batteries are used to operate small portable electrical devices like watches, calculators, torch lights, cell phones and many more. They are also very useful for use in remote areas without wired electricity or when we experience power disruptions at home. Understanding how batteries perform under different temperature conditions helps us properly plan for our power requirements.
What would happen if this science fair project were to be repeated at higher temperatures of 40°C, 50°C, 60°C, instead
The experiment can also be repeated using rechargeable batteries, such as Nickel Metah Hydride batteries commonly used in mobile phones and cameras.
Battery Electricity - http://en.wikipedia.org/wiki/Battery_ (electricity)
Temperature affects batteries - http://www.batteryeducation.com/2006/08/temperature_aff.html
Proper precautions must be taken when handling dry ice.
1. Avoid direct contact with skin or eyes. Wear a lab coat, goggles and thick gloves.
2. Do not store dry ice in air tight containers.
3. Perform experiment in a well ventilated area.