why did my valentine helium baloon come down after 2 days, it did stay up in the air but for a day or two only

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why did my valentine helium baloon come down after 2 days, it did stay up in the air but for a day or two only

2007-02-13 23:42:22 · 3 answers · asked by jay s 1 in Science & Mathematics ➔ Physics

3 answers

Helium atoms are very small, and so it is very difficult to seal them inside something. Basically, they leaked out, and so your balloon no longer displaced more air than it weighed, that is, it became denser (on average) than the air around it. When that happened, your balloon sank to the ground.

2007-02-13 23:51:11 · answer #1 · answered by Spell Check! 3 · 1⤊ 0⤋

because it lost the helium in it.

2007-02-14 07:46:31 · answer #2 · answered by Kimon 7 · 0⤊ 0⤋

THE BALOON IS NOT PERFECTLY SEELED SO THERE IS HELIUM LEAKAGE

2007-02-14 10:52:36 · answer #3 · answered by koki83 4 · 0⤊ 0⤋