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