Select the statement that is trueGroup of answer choicesAs the star exhausts its hydrogen, it begins lithium burning to fuse heavier nuclei to form increasingly larger atomsA gamma ray has energy, mass and chargeIn star formation, clouds of atomic hydrogen are pulled together by electrostatic attractionsAll atoms are generated from the simplest nuclide, hydrogen, by nuclear reactions

Select the statement that is trueGroup of answer choicesAll atoms are generated from the simplest nuclide, heliumHydrogen burning releases energy into the surroundings as heatNew element-forming reactions are endothermic until iron.The hydrogen-1 nucleus is simply a neutron

On the main sequence, stars obtain their energyGroup of answer choicesfrom nuclear fissionfrom gravitational contractionfrom chemical reactionsby converting helium to carbon, nitrogen and oxygenby converting hydrogen to helium

The dominant reaction that occurs in our sun could be described as?Group of answer choicesfour hydrogen atoms combine to form helium and energythree helium atoms fuse to create carbon atoms and energyCarbon atoms and hydrogen atoms fuse to become iron and energyHelium atoms are split to produce hydrogen and energy

Multiple Choice QuestionWhich statement describes the process of nuclear fusion?Multiple choice question.Small nuclei join to form a larger nucleus.Large nuclei split into smaller nuclei.A nucleus emits alpha or beta particles, creating a new nucleus.Electrons from inner energy levels of the atom are captured by the nucleus.

Which of the following is the first thing that must happen in order for solar system formation to take place?Group of answer choicesdust particles must clump together until they are large enough for gravity to affect themprotoplanets must slam together in such a way that they stick togetherthe protoplanetary disc must start spinning and flattening out as a protostar forms at its corean ancient star must explode to provide the heavy elements necessary for planet formation