[Music]
[Applause]
[Music]
[Applause]
earth
is kind of like a puzzle and i don't
mean a puzzle like where did my brother
put my hair brush 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 two the geosphere
and the biosphere up 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 too 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
non-living 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 wetlands all of these
biomes and many more make up the
biosphere 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
[Music]
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 ah 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 and the
stream they don't count
now we're just left with the living
things the grass the birds the deer
voila 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
[Music]