HOW DOES A MICROWAVE

WORK?

Can’t cook, You’ll cook! Lesson One

Take the heading…

How does a Microwave work? And today’s date. 1/10/12

Learning Intentions

We will be able to describe how a microwave cooks food.

We will be able to describe the kinds of food that can be cooked in a microwave.

We will be able to understand how a microwave cooks food.

Is this how a microwave REALLY WORKS?

http://www.youtube.com/watch?v=FGdwEPEU61U&feature=related

Key points The mode stirrer makes microwaves

bounce around in the oven.

These waves heat up the water molecules in food.

This creates friction and heats up the food.

Certain types of food can’t be cooked in a microwave because of the way it cooks food.

FOODS THAT CAN BE COOKED IN A MICROWAVE

Most foods can be cooked!

FOODS THAT CAN’T BE COOKED IN A MICROWAVE

Poached eggsBaked potatoes Soya beansSoupOatmealCorn on the cobFishPopcornCous-Cous RiceMicrowaveable meals-Curries, Pizzas, lasagne, carbonara, pot noodles etc.Meat- Not going to be tasty!

Must be cooked in microwaveable dishes.

Boiled eggs- It will be an EGGSPLOSION

No metal dishes

Magnetic field created by the microwaves- water molecules have a positive and negative charge- they are bi polar. They act as little magnets, pulled one way and then the other by the microwaves. As the waves pass through the water, the molecules begin to vibrate, this vibration of the water molecules causes friction which then cooks the food.