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