Kia ora everyone. Have you ever wondered why
when a bee flies by it makes a buzzing sound?
It's actually because bees flap their wings so hard it causes a vibration in the air
and that vibration vibrates all the way to your ears
and you hear it as a buzz.
Today we're going to do an experiment that helps you to make
an instrument that makes a buzzing sound just like a bee.
For this experiment you are going to need:
two popsicle sticks
little bits of card - I've coloured them in to be bee colours
two smaller pieces of card
three rubber bands - ideally one of them as a thick rubber band
and then you've got two smaller ones
string
sticky tape
and some scissors.
So to get started you're gonna
take your two popsicle sticks and you're gonna hold them together.
Now take your small piece of card and fold it in half like this
I'm gonna place it as a spacer in between the top of your popsicle sticks
but making sure that half of it is sticking out.
Now secure these together using an elastic band,
it's as tight as you can make it.
Gonna do exactly the same
on the other side.
So fold your card in half,
it doesn't have to be exact.
Place it as a spacer between the two popsicle sticks
and then secure it with an elastic band
just like this.
So the spacers are going to stop your bigger elastic band from touching the sticks
and to make sure they do that,
you're gonna fold down the tops of this little card that you made
to a t-shape
and that's gonna be what gives us the buzzing sound with the rubber band.
Okay now we need to make some wings
and so you're just going to take your card
which you can color in to be bee colors like I have here,
and you're going to tape them
to the popsicle stick.
So I'm gonna tape one on first, like this
and then I'm gonna take the other one to the opposite side.
So it's like a pair of wings here.
Now the part of this experiment that does the buzzing is actually the rubber band
and the rubber band is going to give us the vibration in the same way that these wings do.
So you can take your biggest rubber band that you can find
and you're gonna put it over the top and the bottom of your t-shaped little pieces of card here.
So that's all you need for your buzzing thing but now you've got to make it buzz
and to do that you need to swing it around.
So take a length of string about as long as your arm
and you're gonna tie it to the bottom end of the popsicle stick
but making sure it goes inside the rubber band and it isn't touching the rubber band.
So you don't want the string to hold the rubber band together,
you want to just have the string hold the popsicle stick.
And we're gonna tie that in a little loop
and that's gonna help us to spin everything around.
So tie a good strong knot. Strong knot is good get an adult to help you if you're not very good with knots
because otherwise it might fly off and hit somebody in the head,
and that's not a good thing.
Okay so you have your string,
you have your rubber band,
you have your wings.
So I'm gonna step back.
Now the trick here is to make sure that you've wrapped
the string around your hand a few times so you don't let go.
Then you're gonna spin it around,
and as you get faster,
you should be able to hear that you've made an instrument
that sounds like a bee.
And all you needed was a popsicle stick, rubber band a little bit of string and some card.
That is super fun, it's super noisy, super annoying.
Thanks for joining us on Nanogirl's Great Science Adventures
and I will see you next time.