Uses of EM Waves 2 – Hollms School

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First	First	Last	Quiz Score Total	Question 2	2a) Why can microwaves reach satellites in space but radio waves cannot?	Question 1b	2b) How is the energy carried by microwaves absorbed by food?	Quiz Percentage Grade
ppefmh	Ed	Garstin	1/2	Microwaves have two main uses. Microwaves can be used to communicate with satellites in space.	Microwaves are used to communicate with satellites in space. This is because, unlike radio waves, microwaves are not reflected off the ionosphere. This means that they can pass straight through the ionosphere to satellites out in space. Microwaves are used to communicate with satellites in space. This is because, unlike radio waves, microwaves are reflected off the ionosphere. This means that they cannot pass straight through the ionosphere to satellites out in space. Microwaves are used to communicate with satellites in space. This is because, unlike radio waves, microwaves are absorbed into the ionosphere. This means that they can pass straight through the ionosphere to satellites out in space.	Microwaves are also used to heat food in microwave ovens.	The energy carried by microwaves is absorbed by fat molecules. The energy carried by microwaves is absorbed by water molecules The energy carried by microwaves is absorbed by protein molecules.	50%
First	First	Last	Quiz Score Total	Question 2	2a) Why can microwaves reach satellites in space but radio waves cannot?	Question 1b	2b) How is the energy carried by microwaves absorbed by food?	Quiz Percentage Grade