5. 1 hydrogen, 1 Nitrogen, 3 oxygen
Microwaves are one type of electromagnetic radiation. compared to all other types of electromagnetic radiation, radio waves have the lowest frequency.<span> Radiant energy is energy that travels by radiation. an example of this is light. Yes microwaves are a type of infrared rays .</span>
Use a sieve to separate the water from the iron fillings and sand.
Use a magnet to separate the iron from the sand.
