Oct
11
Why can you build sand castles with nearly vertical walls?
Filed Under Earth Sciences & Geology | 1 Comment
cee asked:
a. The sand grains in those castles tend to be more angular.
b. The surface tension of small amounts of water holds the
sand grains together.
c. The angle of repose is higher for sand
d. There is a greater electrostatic charge in beach sand
grains.
BART
a. The sand grains in those castles tend to be more angular.
b. The surface tension of small amounts of water holds the
sand grains together.
c. The angle of repose is higher for sand
d. There is a greater electrostatic charge in beach sand
grains.
BART