How many grains of sand in the world

How to Use Math to Make Estimates. The Math Dude. What Are Averages? What Are Area and Volume? Easy, right? Already a subscriber? Sign in. Thanks for reading Scientific American. Create your free account or Sign in to continue.

The average person walks enough in a lifetime to circle the globe three times. At any given moment there are 1, thunderstorms happening on Earth.

Pumpkins are a member of the berry family. We know, what?!?! Footprints are still on the moon. The North Pole has one sunrise each year. If put in a big enough bath tub, Saturn would float. Dinosaurs are not really extinct. Octopuses can squeeze through most anything. Astronauts can't burp in space.

Peregrine falcons fly over 3 times faster than cheetahs run. A single bolt of lightning could contain enough energy to cook 20, pieces of toast. Our body is just a collection of atoms studying itself. Our state reptile, the Texas Horned Lizard, can squirt blood from its eye sockets. Feet can produce a pint of sweat a day. Lava can flow as fast as a greyhound runs. Snails have thousands of teeth.

Caffeine withdrawal is a real condition. An average cumulus cloud weighs more than 70 adult T. The brain named itself. Had to think about that one, didn't you? Make some noise! Try It! Only female mosquitoes drink blood. Science doesn't end, but these cards just did. Just keeping spinning … Turn your screen brightness all the way up. Lay your device on a flat surface. Carefully spin your device quickly to see the colors blend.

You can also tap on the wheel to spin it. Tap on the wheel to spin it and stop the spinning. OK, got it! Shake it on, just shake it on … Turn your device's sound on and its volume up. Tap the button to turn the generator on and off. Carefully shake your device at different speeds to change the frequency of the tone. Keep shaking!

The tone goes away if the device stops moving. Tap your spacebar at different speeds to change the frequency of the tone. Oh, one more thing. Instead of grains of sand, what about atoms? How big is 10 sextillion atoms? How huge would something with that massive quantity of anything be? Pretty gigantic. Well, relatively at least. If you were to make a pile of that many atoms… guess how big it would be.

Which means, a single grain of sand has more atoms than there are stars in the Universe. Podcast audio : Download Duration: — 3.