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Physics 18 Online
OpenStudy (anonymous):

Which of these is an illuminated source of light? A. the sun B. a star C. the earth seen from the moon D. a meteorite as it burns up in the atmosphere ***ooh i don't know this one at all! thank you!!

OpenStudy (michele_laino):

referring to the previous question: ultraviolet radiations are the shortest radiations, so the right answer is radio waves

OpenStudy (anonymous):

ohh okay haha :P yay!!

OpenStudy (anonymous):

what about this one? :/ i don't remember this :(

OpenStudy (michele_laino):

the earth is not a source of light

OpenStudy (anonymous):

haha yes :P would it be the sun? :/

OpenStudy (michele_laino):

the sun is a source of light, nevertheless it illuminates our solar system

OpenStudy (anonymous):

ohh so our answer is choice A? the sun?

OpenStudy (michele_laino):

a star is a source of light, so it illuminate the surrounding objects

OpenStudy (michele_laino):

I think option D

OpenStudy (anonymous):

ohh okay! so only the meteorite is the actual illuminated source of light? since the others are just objects that illuminate their surroundings?

OpenStudy (michele_laino):

yes!

OpenStudy (michele_laino):

when a meteorite enters inside our atmosphere, we see it, since it appears like a ball of fire

OpenStudy (anonymous):

ahh okie!! thank you:)

OpenStudy (michele_laino):

thanks!!!!! :)

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