Hello I am jared. welcome to fun science demos. in a previous video we took a closer look at
the iron that we can find in our food, using some very strong magnets. take a look at this.
the iron in the spoon was attracted to these very strong magnets. now,
the iron in the spoon is all in one piece, but the iron we find in our food
really is in really small bits, that might look something like this.
i have really tiny, small bits of iron called iron filings, and we are going to see if this
is just as magnetic as our spoon is. so i just have one of those really strong magnets i am going
to put into a baggie because i am thinking those iron filings are going to be attracted to this
magnet and i want to be able to get the magnet off of those iron filings, so i need the baggie.
now let us see what happens when i have my really strong magnet. we are going to zoom
in so you can take a closer look and really watch what happens to these iron filings.
so we have our really strong magnet in our plastic bag and we have our iron filings.
let us see what happens. pretty cool. i can drag the magnet around and it looks
like all of those iron filings have been attracted to my magnet. we have zoomed in even closer so you
can see how the iron filings actually follow the lines of force or the lines of magnetism.
they are curving because they are following that line of force. pretty cool. if this really strong
magnet is strong enough to pull up this iron, i wonder if we can use some really strong magnets
to pull out the iron that is in our cereal. so we looked at the nutrition facts on our cereal and we
found that this cereal that we are using right now has 65 percent of the iron that our bodies need
each day. we think that is enough iron that we can actually pull that out with a magnet.
to do that we are going to need to crush this cereal, and that is the fun part. so we have
our cereal in our bag, now it is time to mash it up. to do that there is really nothing scientific.
you could do this to music, you can karate chop it, you can pound it. you do not want to
hurt yourself, but i want to break that cereal up into tiny tiny bits. now the smaller we can break
our cereal up the better, so to speed things up we are going to use this food processor.
and now take a look. we are going to zoom in so you can see
how nicely our cereal has been broken up. so you can see our cereal almost turned to
a powder. we were able to break it up so small, and i wonder if i take my spoon,
stick my spoon in, no cereal actually sticks to that spoon. what happens if i take my magnet? let
us drop my magnet and take a look what happens. small powdered bits of our cereal is actually
sticking to our magnet. well what do you think is in the cereal that is attracted to our magnet?
i think it is iron, and i think we can even try to pull that iron out and see if we can see the iron.
so we have our bag of broken up cereal, now we need to add the water which will help us
drag the iron filings to one little part of the bag. you want to be careful to not add too much,
but you are going to see the cereals are going to absorb the water, and we want this
kind of like runny oatmeal. fill it up, and i am going to massage the cereal with the water.
so we have added our water, and we have our cereal slush, and the most important thing is,
you want to make sure that your bag is totally sealed because we are going to be turning this
on its side and massaging it out. looks like we need to get a little more air out so i can
take my magnet and run it over our bag again and again and again and see if we can get our iron
into one specific corner. so i have my really strong magnets and all my nice cereal in here
and now what i need to do is take my magnets and just slide it across the baggie nice and slowly
to one spot and i am always coming back to that one spot because i am dragging the iron in the
cereal with my magnets and leaving it in this corner. now i need to do this for a few minutes
so that i can gather and collect all that iron. so we have zoomed in so we can see if we can
find any iron filings in the corner of our bag and look what we found right in the corner! it is
dark colored iron that looks almost like the iron filings we poured out in the beginning of
our video. let us see if we can prove that this really is iron using our magnet. so we have the
end of our really strong magnet. i am going to get it close to our iron filings and see what happens.
you can see they follow my magnet everywhere. i am going to just play around with this to
see. if you can watch you can see it is totally following my magnet. that is the
iron we pulled out of the cereal using our magnet. so so cool! so we have a collection
of iron filings right here. let us see if i can use the magnet to move them. so cool!
put them right back in the corner. this is a really cool thing that you can try at home,
you just need some really strong magnets and some cereal. now we decided to go with a lighter
colored cereal because it was a lot easier to see the iron in our cereal. this cereal actually has
more iron in it because it was darker in color. it was harder to see. if you want to learn more about
magnets and what our bodies need to stay strong, check out our links in the video description.
science is so cool! and it is everywhere, even in our breakfast cereal! thanks for
watching.