A) core B) chronosphere C) corona D) photosphere
A) lunar eclipse B) the aurora borealis C) solar eclipse D) flow of protons and electrons from sun
A) helium is formed B) all of the above C) 2 hydrogen atoms combine D) nuclear fusion
A) the northern lights B) the moon C) solar winds D) the sunset
A) convection zone B) chronosphere C) corona D) photosphere
A) x rays B) radio waves C) gamma rays D) microwaves
A) radio waves B) microwaves C) gamma rays D) x rays
A) False B) True
A) we can see all of the electromagnetic spectrum B) ultraviolet light C) infered light D) the visible spectrum
A) 1 light year B) 93 million miles C) 93 billion miles D) 93 thousand miles |