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