My bluff about balloons

Our apartment front office used to have colorful balloons. I used to take away one now and then. My father warned me not to do so. One day when I was back from school the colorful balloon caught my eyes. I picked up one and came home and was playing with it.

My dad: "Where did you get this from?"
Me : "I got it from school."
My dad: "How did you bring it from school?"
Me : "It deflated. After coming home inflated it."
My dad: "Let it free"
Me : "Okay okay okaaay..."
I let it free. It flew up and stuck to the roof.

My dad: "It is a gas balloon so, don't bluff."
Me : " I.....uh......got it from the...uh...appartment office. I am...so sorry dad."

I asked my mom" How did he find it?"
Mom : Because room has less air. When you blow a balloon with air, the atmospheric air is lighter than the air in the balloon so, the balloon won't fly like a gas balloon.

Then I did an experiment using air and gas balloon.

Gas balloon

Air balloon



I understood that air balloon can't fly up like gas balloon.