Four Spheres Part 1 (Geo and Bio): Crash Course Kids #6.1





earth is kind of like a puzzle and I

don't mean a puzzle like where did my

brother put my hairbrush or what exactly

is in the tacos they serve on Taco

Tuesday I mean that our planet is made

up of four very different parts that all

work together to make earth the lovely

place that we know it to be we call

these parts spheres and between them

they contain all the stuff on our planet

everything from the fish in the ocean to

the air we breathe earth has four

spheres the geosphere the biosphere the

hydrosphere and the atmosphere so what

exactly are the spheres and what's in

them let's take a look at to the

geosphere and the biosphere

first is the geosphere geo comes from

the Greek word for ground you may have

heard this before in words like geology

or geography

it basically means having to do with the

earth and in a way the geosphere is kind

of like the skeleton of our planet all

of the other spheres are built on top of

it it's made up of all the rocks and

minerals on earth from the biggest

boulders to the tiniest grains of sand

and all of the landforms that those

rocks and minerals make up are part of

the geosphere - I'm talking volcanoes

canyons beaches mountains you name it if

it's made out of solid earth it's part

of the geosphere now it's important to

remember that the geosphere includes

only nonliving stuff living things do

need to eat though and all living things

are part of another one of Earth's

spheres the biosphere bio is Greek for

life and like Geo you've probably heard

it before in words like biology the

study of life the biosphere is made up

of many different biomes biomes are

regions that have similar kinds of

plants animals and other living things

that have adapted to live in that

particular region's terrain and climate

deserts and forests are types of biomes

so our rainforest grasslands and


all of these biomes and many more make

up the BIOS

okay now that we know what's in these

two spheres let's put them together and

try to figure out what belongs to which

sphere imagine a lovely forest meadow a

bird perched on a rock chirping away a

deer standing in the tall grass a

mountain standing tall in the background

in a stream flowing through the clearing

I can almost smell it almost everything

in this scene is part of either the

geosphere or the biosphere let's see if

we can figure out which parts go into

which sphere let's start with the

geosphere we know that there's nothing

alive in the geosphere so we can rule

out all the plants and animals water is

also part of a different sphere but

we'll talk about that later when we take

away the living things we're left with

all the solid earth parts of the scene

the rock the bird was standing on the

soil the grass was growing out of the

mountain in the distance and the bed the

stream water flowed through so what

we're left with is the geosphere rocks

soils and landforms got it now let's

think about the biosphere

unlike the geosphere everything in the

biosphere is alive so the rocks the

mountain in the stream they don't count

now we're just left with the living

things the grass the birds the deer


you found the biosphere so now you know

two of Earth's four spheres the

biosphere and the geosphere while

they're different puzzle pieces of Earth

they work together to help make our

planet what it is okay

now I gotta go find where my brother put

my hairbrush