How long does it take for a sand dollar to bleach out in the sun?
336129
i don't know. you would have to research on that
235735
Depending on its position in the oval orbit it has around the sun, the earth gets sunlight 8.317 minutes after it is emitted from the sun.
829790
Out in the sun too long.
828458
Maybe a week. I had this done a long time ago and it didn't take long at all.
1185057
If you've strolled along a beach in Maine, you've probably found a sand dollar. But what is a sand dollar? Children have been known to say that sand dollars are pressed sand that has been dried or even the money of mermaids washed-up from the deep. In reality, the fragile disk is the skeleton or "test" of a marine animal. By the time the test washes up on the beach it is missing its velvety covering of minute spines and appears somewhat bleached from the sun. It is hard to believe it was once alive. \n\nSand dollars are from the class of marine animals known as Echinoids, spiny skinned creatures. Their relations include the sea lily, the sea cucumber, the star fish and the sea urchin. When alive, the local species, Echinarachnius parma is outfitted in a maroon-colored suit of moveable spines that encompass the entire shell. Like its close relative the sea urchin, the sand dollar has five sets of pores arranged petal pattern. The pores are used to move sea water into its internal water-vascular system which allows for movement. \n\nSand dollars live beyond mean low water on top of or just beneath the surface of sandy or muddy areas. The spines on the somewhat flattened underside of the animal allow it to burrow or to slowly creep through the sand. Fine, hair-like cilia cover the tiny spines. These cilia, in combination with a mucous coating, move food to the mouth opening which is in the center of the star shaped grooves on the underside of the animal. Its food consists of plankters and organic particles that end up in the sandy bottom. \n\nDue to their diminutive edible parts and relatively hard skeleton, few animals bother sand dollars. One animal found to enjoy them on occasion is the thick-lipped, eel-like ocean pout. \n\nOn the ocean bottom, sand dollars are frequently found together. This is due in part to their preference of soft bottom areas as well as convenience for reproduction. The sexes are separate and gametes are released into the water column as in most echinoids. The free-swimming larvae metamorphose through several stages before the test begins to form and they become bottom dwellers. \n\nSince the sand dollar lives in sandy locations, anyone who would like to collect their shells should comb beaches as the tide recedes. The very best time for collecting is after a heavy storm, as many of the shells that have died are dredged up by the increased wave action.\n\nCheryl Page \n\nInformation for this article was taken from: \n\nGosner, Kenneth L., Guide to Identification of Marine and Estuarine Invertebrates; 1971 by John Wiley & Sons, Inc. \nRobbins, Sarah Fraser and Clarice Yentsch, The Sea Is All About Us ; 1973 Harcourt Brace Jovanovich, Inc.
630277
actually thats sun burn not due to being bleach or sort
408556
2 minutes\n\nsit \n\ncrap \n\nwipe \n\ngo
1151205
No, it gives out light constantly.  It takes 8 mins for it to travel from the sun to where you see it on the sidewalk. (actually it is 8.3168708 minutes, but I don't want to be picky.)
1133863
Usually less than an hour.
624105
Slightly over eight minutes.\n\nTo be exact look up on Internet\n\nBest Regards
918053
let them sit in bleach for a 1/2 hr and rince well
726134
How long?  In time?  Like, seconds? \nI guess it depends on the intensity of the heat source.
374618
i agree with 1st answer...  2 weeks or a bit longer is a good time to stop bleaching.  make sure however that you get your teeth as white as you'll ever want them because once bonding is completed and matched, you are stuck at that shade.  in order to change shades again, you'd have to redo all of the bonding which is risky and expensive.
646111
You can turn it black with an iodine solution, then turn it back with sodium thiosulphate solution. Neat trick.
470600
with proper circualtion of air maybe like 5-10 hours and it depends on the size of the house. make sure u air it out u dont need to get high off the paint odors.
1122738
Sand dollars are of the Phylum Echinodermata, class Echinoidea.   They, like the sea urchin, have no arms or legs  but move around by tiny spines on their body.  Sand dollars are usually found lying in a bed buried under a layer of sand.  If a sand dollar is found alive it will appear to have a layer of very fine hair on its body.  These are the spines.   They are a slow moving grazer that feeds on disintegrating organic material found within their sand beds.
1010014
as long as it's not done on a sunny day.