The Union Recorder

Community News Network

April 22, 2013

Slate: 15 facts about our planet

It's easy to take Earth for granted, since we see it every day. It becomes — it is — part of life's background.

But when you see the world through the eyes of science, nothing is mundane. We live on the surface of this great giant space-borne water-laden spinning rock, separated from the rest of the Universe beneath a thin veil of nitrogen and oxygen molecules. Even though you're immersed in its influence, what do you really know about the Earth?

Here are some facts about our planet for you to ponder.

1. There are a lot of different ways to measure how long it takes the Earth to go around the Sun, but if you say it takes pi x 10 million seconds, you'll only be off by a half a percent.

2. The Earth has a volume of about one trillion cubic kilometers. Can you picture a cube 1000 meters high, 1000 meters deep, 1000 meters across? Now picture a trillion of them. That's the Earth.

Actually, if you were that big, it would be easy.

3. The Earth has a mass of 6,000,000,000,000,000,000,000,000 kilograms, or, if you prefer, 6 sextillion tons. In pounds, that's actually . . . 0. Nothing. Mass is a measure of how much stuff an object contains, but weight is how hard gravity pulls on that mass. The Earth is in space, orbiting the Sun, so it's in freefall. It has mass, but no weight at all.

4. The Earth isn't a perfect sphere. It spins, so it's a flattened at the poles a little bit. The diameter through the poles is 12,713.6 kilometers (7882.4 miles), but it's 12,756.2 kilometers (7908.8 miles) through the equator. That difference of 43 kilometers is only about 0.3 percent, though, so really we're pretty close to a perfect sphere.

5. Not only is it flattened, but the gravitational forces of the sun and moon (what we call tides) distort its shape even more, pulling bulges out from it. The Earth is lumpy! Out in the deep ocean, the bulge of water due to the sun and moon can have an amplitude (change in height from minimum to maximum) of about a meter (40 inches). The solid Earth deforms due to the tides, too, with an amplitude of roughly 50 centimeters (20 inches). Even the air is affected by tides; though there are several factors that greatly complicate it (like expansion due to heating from the sun during the day, and, simply, weather).

Text Only
Community News Network
Poll
AP Video
FIFA Rejects Suarez Appeal Against Biting Ban World Cup Final Pits Argentina Against Germany Obama Responds to Hecklers on Immigration Chimp-attack Victim Lobbies Congress Police: Prostitute Linked to 2nd Death Thousands Attend NYC Firefighter's Funeral Neighbors Mourn Killing of Texas Family Art of Haitian Machete Fighting Revived Israeli-Palestinian Tensions, Attacks Escalate UN Secretary-General Urges Mideast Ceasefire 'Game of Thrones' Leads Emmy Nominees Raw: Australia Hosts Annual Beer Can Regatta At Texas Border, a Daily Tide of Poor Migrants Raw: Rescuers Push Beached Whale Back to Ocean Mass. Mayor: Families Lost Everything in Fire Four Kids, Two Adults Shot Dead Near Houston Connecticut Boy Dies Inside Parked Car Fans Dying to Be Near Jazz Greats Robots Gearing Up for Their Own 'World Cup'
Facebook
Twitter Updates
Follow us on twitter
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.
Stocks
NDN Video
Tiny Hamsters Who Ate Burritos are Back for a Tiny Hedgehog's Party Watch Kelly Ripa Get Soaked! 'Referee' Hands Out Yellow Cards for Social Faux Pas in NYC 2014 Emmy Nominees: 8 Snub Shockers Emma Watson Is Va-Va-Voom in Valentino 7 Infamous Sports Blowouts Argentina tops Holland in World Cup semifinals News flush: Japanese toilet exhibition making a splash Emmy Nominations: What to Watch For 'Game of Thrones' Leads 66th Emmy Awards Nominations Photographic 'Proof' That LeBron Is Leaving Miami - @TheBuzzeronFOX Elephant Pool Party at The Oregon Zoo Must-See! Berry and Fallon Form Human Hamster Wheel Pilot buys pizzas for travelers delayed by storm Klose nets record, Germany rout Brazil 7-1 'Purrmanently Sad Cat' Looks Adorably Sad All the Time Pharrell 'humbled' by success of mega-hit 'Happy' Day After: Brazil Reeling in WC Loss Jennifer Lawrence Facepalms Emma Watson Athletes Bare All for ESPN Magazine's Body Issue