Why do balloons get smaller when they are taken from different areas

from high temperature to colder temperature
gas laws

because air expands and contracts in different temperatures :) so if you take a balloon into a warm room it will expand because the air in side it is expanding and taking up more space, and if you take it into a cold room it will shrink because the air inside it is contracting and taking up less space

Gas tends to contract when they move from a warm to a cold location.

Here's a better description.

http://wiki.answers.com/Q/Why_does_cold_…

Boyle's Law. Volume, temp. and pressure are directly related.