Hi I am Jared, welcome to Fun Science Demos.
大家好 我是Jared 欢迎来到《趣味科学实验室》
Do you know a great way to start your day
is with a nice healthy breakfast?
At Fun Science Demos, we like to say that there is science everywhere.
You just have to sometimes take the time
to stop and try and wonder why
and we can even find science in our cereal.
Our body is made of cells
and those cells need certain things to work
things like vitamins and minerals
so where do we get all those vitamins and minerals
that our cells need to work?
Well we get those vitamins and minerals from our food
from this bowl of cereal.
We are going to use science
to take a closer look at one of the most important minerals
that we find in our bodies: iron.
to take a closer look at the iron that we can find in our cereal.
We are going to need some really strong magnets
Because magnets do something really neat
when it gets close to iron
the magnets attract the iron.
And if magnets can attract the iron we find in the spoon
I wonder if we can use the same magnets
to attract the iron we find in our food.
So we have zoomed in on our nutrition label
and if you look closely
right above my finger you should be able to see iron
And if I look even closer
it says that eating a bowl of this cereal
will give my body one hundred percent of the iron
that it needs each day
There is definitely iron in this cereal!
Now there is a lot of iron in this spoon
so the magnet can attract it without any problem
but there is not as much iron in each flake of my cereal.
So how can we get to see them
the magnet and the iron at work ?
Well we need to get creative.
So we brought in a really big bowl for our cereal
and we do not need a whole bowl of cereal
we just need one piece, and we filled our bowl with water.
What we are going to try to do
is float one piece of our cereal on the water
and put the magnet close to our cereal
and see if we see something happen.
We are going to zoom in so you can get a better look.
So we have zoomed it and now we are ready to see
science at work in our cereal.
Let us float our cereal enter the magnets
let’s get them close
and can you see what’s happening?
I can use the magnets
to pull the cereal all across my bowl
but it’s…what’s happening there?
Well the iron in the cereal
is attracted to my really strong magnets
and man, I can see the magnets
pulling the iron in the cereal.
All you need to do is take a walk down the breakfast cereal aisle in your food store
and take a closer look at some of the nutrition labels
of all the different types of cereals.
This type of cereal actually has 40 percent iron
but this one right here has 90 percent iron.
It is really neat to just grab a box of cereal
get some water in a really strong magnet
and try it out for yourself.
Experiment and see what happens!
See if you can get the iron in the cereal
to be attracted to the magnet
but think about this too.
Other foods besides breakfast cereal
have iron in them too.
I wonder if we could actually use a magnet
with some of those other foods
and see if we can get the iron to attract to the magnet.
Let us give it a try.
A simple Google search will tell you
what types of food have a lot of iron in them.
Spinach is one of those foods that has a lot of iron in it.
I wonder if I could float this spinach leaf
and see if the iron in the spinach
could be attracted to the magnet.
To do that I am going to break off the stem
and I am going to drop it in my bowl
and we will zoom in and take a closer look
and see what happens.
Let us drop in our spinach leaf
let us put our magnet next to it and see
if something happens.
You will notice
that spinach leaf is following my magnet
because the iron in that leaf
is attracted to the magnet.
Pumpkin seeds also have some iron in them
so let us see if we can get the iron on our pumpkin seed
to attract to our magnet
let’s float it in the water.
Let us get our magnet close to it.
Sometimes we got to get really close
and now I got it moving.
The iron in the pumpkin seed is attracted to my magnet.
Remember, scientists like to try things in experiments
so I took a field trip to my food store
and I looked at some of the nutrition labels
on all of these foods
and I found that iron is actually in cocoa powder
and seaweed and chickpeas and oats.
I wonder if you could experiment
if you could become a scientist
get some really strong magnets, a bowl of water
and see if you could get the iron in these foods
to be attracted to this magnet.
If you want to learn more about magnets and how cells work
check out our links in the video description.
Science is so cool
especially when we find it in our food!
Thanks for watching!
Hi I am Jared, welcome to Fun Science Demos.