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Does a microwave use light energy?
yes its does because when the microwave is on and the plate is rotating,the light is actually heating the food. It is not the visible light that does the heating, that is provided simply so you can see inside the oven. It is the microwaves that do the heating, by agitating molecules of water in the food. That's why you can't heat dry food in microwave oven. The microwaves are EM radiation like visible light, but a different wavelength.
How do microwaves affect the water?
microwaves vibrate water molecules in food to create heat
What substance absorbs microwaves?
Water Molecules in the food
Give an example of one type of energy conversion change to another form?
Heating food in a microwave: Electromagnetic radiation energy in the form of microwaves cause increased vibration of bonds in water molecules resulting in the increased heat production.
How is kinetic energy used in a microwave oven?
Kinetic energy is the mechanical energy (thermal energy) that does the heating/cooking in a microwave oven. The microwaves that the oven generates stimulate chemical bonds in food, and this is the conversion of electromagnetic energy into that heat we mentioned.
What does it mean when a microwave oven uses convection microwaves?
A convection microwave uses both microwaves and convection heating to cook the food. The convection cooking allows the food to be browned and cooks the outer part of the food while the microwaves cook the interior of the food.
Name good or bad things about microwaves?
Microwaves are good for heating things fast. Don't stay near one, it can cause cancer because microwaves work on heating the water in the food, and we are 70% water and it could mess up our cells
Why can frozen food be defrosted using microwaves?
Because the microwave vibrates the water molecules in the food, heating it up.
Why do fruits cook quickly in the microwave?
Microwaves heat food by causing the water molecules in the food to vibrate... there by heating the food. Water content and the mass of the food will effect the time taken for heating.
Does a microwave use light energy?
yes its does because when the microwave is on and the plate is rotating,the light is actually heating the food. It is not the visible light that does the heating, that is provided simply so you can see inside the oven. It is the microwaves that do the heating, by agitating molecules of water in the food. That's why you can't heat dry food in microwave oven. The microwaves are EM radiation like visible light, but a different wavelength.
Why do microwaves not brown foods?
Microwaves heat food by heating the moisture in the food. If the microwave does not have a browning element in it, there is nothing to cause the food to brown. Some foods can be browned in a microwave oven, if there is some fat content. But this may also over cook the food.
Does food in a microwave oven absorb microwaves?
Yes, items in a microwave oven can be said to absorb microwaves. The microwave energy causes what is called dielectric heating, and this activity takes energy from the microwave beam.
How do microwaves cook food?
the microwave makes the water molecules in the food move and bump around this causes friction in the food to be cooked.
Why microwave cooking is quicker and why I am the food stirred?
Microwaves cook (heat) the outsides of the food first. So stirring part way through the cooking time allows a more even heating.
How the electricity is converted into microwave beams?
Microwave energy is already a usable power source for cooking/re-heating food.
How microwaves cook food?
the microwave makes the water molecules in the food move and bump around this causes friction in the food to be cooked.
Can microwaves be used in space?
Yes they can, because of the electromagnetic waves being used in the microwaves are not harming or immobilising the spaceship. Common uses are warming tool and heating food. Phillip Morris PhD, USC
