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Hi, I'm Jared, welcome to "Fun Science Demos". The big idea today is life cycles.
All living things go through steps and a life cycle,
and today we're going to talk about a living thing that goes through its life
in weeks. We've zoomed in so you can see the living thing we're going to talk
It's actually a really small type of shrimp called the brine shrimp,
and this is a picture of its life cycle. They start out as eggs and those
eggs hatch into tiny brine shrimp
until they grow into adults in a matter of weeks.
And those adults lay more eggs and those eggs hatch and they grow into adults that
lay more eggs that hatch that grow into adults.
Hey, it's a cycle of life; a life cycle.
I said the brine shrimp were really small but they looked pretty big in that
So how big are they really? Well, in this vial I have a whole bunch
a brine shrimp eggs. So you can get a better look at how small they really are,
I'm gonna tap some out next to this coin and we're gonna zoom in and you can
really see how small those eggs are.
I'm putting some eggs next to the coin, let's zoom in and take a closer look.
There's actually hundreds of brine shrimp eggs in this pile.
The neat thing is we can actually make these eggs hatch.
But these eggs need the right conditions in order to hatch.
So what are the right things these eggs need to hatch? Well,
they need water, they need oxygen, they need salt and they need food.
So now let's put those four things together and see if we can hatch these eggs.
I'm gonna add salt to our water just by dumping it in, Make a little mess in
I'm going to bubble oxygen into this water
with my little pump and you can see the oxygen bubbles. Put it all the way down.
Now we need to add the brine shrimp eggs. I'm gonna tap in a few hundred.
Right now they're floating on the top but eventually they'll mix in through the water
and it'll take two to three days for these eggs to hatch. Okay, so it's two days
Let's take out the oxygen bubbler and see if we can zoom in and take a closer
look and see if the eggs hatched.
Remember how I said brine shrimp are really, really small?
We've zoomed in and we've actually used a magnifying glass here so that you
can see them swimming around.
It's only been two days and we need you to look really carefully.
There's two parts to the magnifying glass, this little window
and this bigger window. Just look in the windows and you should be able to see
these really small brine shrimp
swimming around. Think about that:
two days later we went from eggs to brine shrimp
that are just hatched. And these little guys are gonna grow to adults
who are gonna lay more eggs who are gonna hatch and grow to adults and lay more eggs.
It's life, it's a cycle, it's a life cycle.
Science is so cool. Don't forget to check out our links in the video description.
Thanks for watching.