## How does a Pressure Cooker Work? - Science for Kids | Educational Videos by Mocomi Kids

[Music]

how does a pressure cooker work the

sound of a pressure cooker may be

startling but it is a call to you that

it is doing its job yes food will be

served soon there are two very important

things happening inside the chamber of a

pressure cooker stoolie and pressure a

combination of steam and pressure make

the pressure cooker the efficient

kitchen delight the two work together to

cook things in no time

one of the reasons we use water to cook

food is because it is a better conductor

of heat than air is you can raise the

temperature of water to transfer its

energy to the water in food basically

cooking it a pressure cooker increases

the pressure so that the water will come

to a boil higher than its regular

boiling point which is 100 degrees

Celsius but this is only half the reason

why it takes so little time to cook food

inside a pressure cooker the increased

pressure inside the cooker literally

forces the heat into the food think of

the pressure as an invisible hand

pushing the extra hot steam into the

very core of the food inside but if the

pressure is like a crushing hand then

why doesn't the food come out all

smashed well this is because the steam

applies uniform pressure to all the

surfaces of the food and that leaves the

food and smashed parts of a pressure

cooker a pressure cooker is made up of a

pot a lid which fits precisely on the

pot with a locking mechanism a rubber

ring that goes between the lid and the

pot so that no air can escape a vols on

top of the lid with a release whistle

there are two extremely important paths

in all pressure cookers the rubber ring

that goes between the pot and the lid

ensures that no air escape

from inside the container if it did then

the pressure would not be able to build

up the valve on the top is a safety

measure that makes sure the pressure

does not build up to dangerous levels

inside the pot this could lead to a

potentially dangerous explosion it is

designed to allow some of the steam to

escape after the pressure inside reaches

a certain point and with that startling

listen we know how much the food has

long different foods would take to cook

inside a pressure cooker ask her to tell

you in how many whistles not actual time

when she's cooking these different foods

see how long it actually takes here are

the names of some foods you can try 1

cup of rice 4 potatoes 1 cup of dull

[Music]