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popcorn

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by

Mia Salloum

on 6 February 2014

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Transcript of popcorn

Popcorn
Mia Salloum
So why does popcorn pop? There are three main elements of popcorn that have to come together to produce popcorn kernels that are good for popping. Those three elements are: the percentage of water content; hard, undamaged, water impermeable shell; and a starchy center.

When the kernels are heated up, the water inside begins to steam. Assuming the water impermeable shell doesn’t have any cracks in it to let the steam escape, this creates a simple little steam/pressure cooker. The starch inside the kernel then turns into a kind of gel-like substance as a result of this. Eventually, the pressure of the steam gets so great that the hard shell pops.

Why does Popcorn Pop?
Mushroom
Butterfly
Popcorn
Popcorn
Mushroom popcorn is less fragile. It is used for caramel corn.
Butterfly popcorn is fragile because
its wings can break off.

A popcorn kernel is mostly made up of starch and surrounded by a strong hull or shell


Popcorn goes pop because as you heat it up the moisture inside also gets hot and would like to turn into steam. However the hard outer coat of the kernel can support up to 10 atmospheres of pressure, stopping the water expanding into steam. The water keeps heating up above 100°C, building up more and more pressure.
Kernel
The Corn
There is a difference between popping corn
and regular corn.
Poping
Corn
Regular
Corn
Regular corn does not pop
Popping Corn is dryed up
They dry the Corn
It gets put it in a
bag at the factory.
POP IT!
You wait
Who likes popcorn?
Yes
No
THEN YOU EAT IT
.
thank you
Why I chose
this topic
tick tock
https://sp1.yimg.com/ib/th?id=H.4510146447279901&pid=15.1
Popcorn comes in many
different flavours and colours
Full transcript