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