Earth's Weight
Science brain teasers require understanding of the physical or biological world and the laws that govern it.
It is estimated that the earth weighs 6 sextillion tons. How much more would the earth weigh if one sextillion tons of concrete and stone were used to build a large wall?
Answer
It would weigh the same since all materials are taken from the earth's original weight.
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Comments
missie
Apr 01, 2002
| Good one! |
bighippo4
Apr 04, 2002
| That had to be the easiest teaser I have ever done! |
kendroberts
Apr 06, 2002
| I think the earth's weight would drop, because you are moving mass away from its center. The material in the wall weighs less then the same material a few feet lower (in the ground.) Or, maby the weight of the earth (the net force on it from its own gravity) is zero both before the wall and after? |
Mogmatt16  
Apr 16, 2002
| That would be a big wall............ |
Christopher
Apr 25, 2002
| Hey! Good job kendrobert, The question should say mass and not wheight. The same with the answer. Still, good job BlaZe |
(user deleted)
Aug 14, 2002
| Assuming you took the stuff from earth's own mass, what would you build the wall on?
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electronjohn 
Nov 14, 2002
| That would be a Great Wall. |
Glenbo
May 22, 2003
| This is more of a Trick teaser |
drussel3
Jun 11, 2005
| Good one. |
jsdodgers 
Oct 07, 2007
| Kendroberts, the density of a material changes by depth, not its weight! |
jsdodgers
Oct 07, 2007
| and also that was the easiest teaser ever |
Gerrard10
Nov 03, 2009
| Fun, though I think trick works. ;) |
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