What's green and falls up?
There may be several answers to this riddle. But, the one that seems to work best is "seaweed". Seaweed is green and can be seen as falling up, because when it falls off the plant it's attached to, it rises to the surface. Another answer is "Earth", because the gravity of planet Earth also pushes up to meet people, buildings, trees, etc. The gravity of our bodies and other objects above ground, as well as the gravity of the Sun, pulls Earth upwards to some extent. Cruder answers are "vomit" and "phlegm".
Updated on Wednesday, December 28 2011 at 01:25AM EST
Source:
www.4physics.com/...
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