What causes a bubble to form?

1.what causes a bubble to form?

2.is a bubble always round?

3.why so some bubbles stay longer in the air?

4.why do some bubbles pop sooner then others

5.why do bubbles have color?

6.do all bubbles have color why or why not?

7.what are 15 to 20 observations you see when you blow a bubbleWhat causes a bubble to form?
(Try to do it and not to say it)

.You put those questions on search, and find the Answers as bellow.

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Soap bubble - Wikipedia, the free encyclopedia

The tension causes the bubble to form a sphere, as a sphere has the smallest ... Therefore, a colourless bubble forms with the dye falling to a point at the base. ...

en.wikipedia.org/wiki/Soap_bubble - 54k - CachedWhat causes a bubble to form?
i dont knw