how many grains of sand do u think are on all the beaches in the world?

Question

how many grains of sand do u think are on all the beaches in the world?

Answer 1

a number too large to even comprehend in scientific notation....incalcuable by any machine known to man as of yet

Answer 2

1mm is much too large an average for the grainsize of beach sand. It is closer to 0.1mm, mnaking the average grain volume 0.001 cu mm. With a packing geometry of about 60%, this would increase the number to about 10^20. I think that is a fair estimate.



Of course, there are a lot more grains of sand on the continental shelves and in the deserts than there are on the beaches, and I once calculated the total grains of sand in the world as being about 10^24.

Answer 3

you could start by trying to guess how many are in a spoonful. Use a magnifying glass to try and count the grains in a small section then count how many sections fit into the spoon. Multiply the 2 numbers to get an estimate. Mathematicians at the university of hawaii used this method and came up with the best guess as being seven quintillion, five quadrillian grains of sand on all the beaches in the world.

Answer 4

A. U. of Hawaii study figures around 7 quintillion grains of sand in the world's beaches.

Answer 5

12

Answer 6

No clear answer. The geologic process is always turning the sand into rock and rock into more sand. It would be like counting drops in a waterfall.

Answer 7

Their must be trillions of trillions of grains in all the worlds beaches, maybe even more.It is definently more than we can count.

Answer 8

If you cup your hands and scoop some up, you'll be holding around a million grains. So I'll let you do the maths (and dont forget the seabeds too).

Answer 9

Answer - 0



if you got hairs count them and you get the answer...

or count the stars you get the stars.





in the end you will get answer 0.I said 0 because 0 is what we cant define.infinity and 0 are both same....infinity is 00 thats how we write is.Indians thus defined 0 as that is uncountable.

Answer 10

This was actually calcualted once :) and here is how they did it.



N=Vol of sand/Vol of Grain



Vol of sand =(length of beaches)(width)(depth)

Length of beaches = %shores/100(length of shores)

length of shores =(multiple of circumfrence)(earth circumfrence)



N=(%shores/100)((multiple of circumfrence)earth circumfrence))(width)(depth) / Vol of Grain



%shores =25

Multiple of Circumfrence = 5

Earth Circumfrence = 40000km km=1000m m=1000mm

Width 30m

depth 5m

Vol of grain = 1mm cubed



pugging in all the values you get



N=(25/100)((5)(40000(1000(1000mm)))))(30(1000mm))(5(1000mm)) / 1mm cubed



N= 7.5x10^18



OMG i am such a geek :p

Answer 11

since youre not counting the sand under the surface of the water, we would have to know tidal position to count from the correct shore line.

So - good luck with that

Answer 12

6 the rest are deformed versions unworthy of the term 'grain'.

Answer 13

enough to build a really good sand castle

Answer 14

4.

Answer 15

Wow - it makes my hand spin just thinking about it! Too many to mention, that's for sure.

Answer 16

a number too big to even write down.

thats like saying how many stars are there

Answer 17

Er i wont have enough space to write the number :S

Answer 18

too many to count

Answer 19

billions of trillions. you would probably reach the moon with the amount of zero's you would use!

Answer 20

hmm I'm guessing enough to make my brain hurt

Answer 21

how bout you go count them and come back and tell us lol not being mean bythe way

Answer 22

so many we will never know and it is always changing!

Answer 23

none. sand is measured in granuals

Answer 24

alot

Answer 25

I'll just go count now =)

Answer 26

can't count

Answer 27

******* lot if u ask me

Answer 28

1,000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 thats all the grains i think

Answer 29

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