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