What If The Earth Were Twice As Big?

hey there welcome to the life noggin we live in a part of the solar system called the Goldilocks zone where it's not too hot that all the water evaporates away but it's also not too cold where it freezes instead and unless you're an astronaut the big spherical Rock will be your home for life but what if that home suddenly changed what if in a split second the earth doubled in size let's assume that the density remains constant so the mass of the earth increased as well how would that change things well first off gravity would be very different the earth would have eight times as much mass and gravity would be twice as strong so if you stepped on a scale you'd suddenly weigh twice as much as before it would be much harder for you to walk and you get tired much more easily after all you'd feel like you were giving another version of yourself a piggyback ride all day every day which would look very funny over the years human bones especially in the legs would have to become stronger to support this increased weight meanwhile trees would start to collapse and any new trees that grow in their place might not grow as tall see there's a limit for how tall a tree can grow usually around 400 feet or so this limit is determined by gravity since the taller the tree is the more energy is required to transport water from the roots to the top if the amount of energy of the tree gains from photosynthesis is more than the energy it takes to transport the water it'll keep growing otherwise it'll stop so if the earth suddenly got twice as big the trees like the California redwood may not be as impressive luckily even though the gravitational pull of the earth will be stronger it still won't be enough to break the moon apart see in order for that to happen would have to be within the Earth's Roche limit this is the minimum distance the moon can approach the earth without being torn apart by tidal forces this happens because the near side of the moon is pulled in harder than the far side when the moon gets close enough to the earth the gravity holding it together is overcome by this cosmic tug inside that limit Earth's gravity will tear the moon apart giving us a ring like those around Saturn oh and the more Earth there is the more it will heat up see if there are more unstable elements in the crust and interior more heat will reach the surface and there may be much more volcanic activity and I don't know about you but I'd rather not live in a world where there's a constant threat of an exploding volcano oh we re already living in that I'm looking at you Yellowstone anyway if you could live anywhere in the universe no limitations where would it be and why if I could I totally live in Jupiter's Great Red Spot it'd be pretty dangerous but I'm an animation I can totally handle it make sure you come back every Monday for a brand new video as always I'm black oh this has been life noggin don't forget to keep on thinking

Channel: Life Noggin

Views: 11,845,654

Rating: 4.8857431 out of 5

Keywords: animation, curiosity, discovery, education, entertainment, fun facts, knowledge, learning, News, outside the box, pop culture, Science, testtube, Goldilocks Zone, earth, moon, planet, what if the earth was twice as big, twice as big, solar system, world, how, life noggin, ian dokie, doubled, rock, crust

Id: 1bVfzBD-40E

Length: 2min 44sec (164 seconds)

Published: Mon Nov 09 2015

Reddit Comments

[u/Juz16]

He didn't really cover much. How many buildings would collapse? Would people be able to escape the gravity well of the Earth with rockets? What woul future houses look like? Are the tides reduced since the earth's gravity increased but the moon's didn't? Would tons of animals just die by being crushed? Does air pressure go up? Does water pressure at the bottom of the sea go up? Do waterfalls become way more deatructive? Are guns effective at 2x gravity?

[u/aDAMNPATRIOT]

Why do all these fucking video narrators have such fucking annoying voices

[u/austin101123]

I don't like how it says twice as big, but then he says 8x the mass. That means 8x as big, not twice.