C165- EARTH AND SKY QUESTIONS WITH CORRECT ANSWERS

What force caused the hydrogen, helium, and lithium formed from the big bang to collect and form stars, planets, and other objects, as well as to form the different elements than hydrogen making up these objects? magnetism gravity chemical bonds inertia CORRECT ANSWER gravity What process generates the energy that stars emit? chemical reaction of hydrogen and oxygen to form water vapor- wrong fission of uranium or other large nuclei to form smaller nuclei fusion of hydrogen or other small nuclei to form larger nuclei gravitational acceleration of matter to convert potential energy to kinetic energy- wrong CORRECT ANSWER fusion of hydrogen or other small nuclei to form larger nuclei Which of these effects is NOT caused by gravity?