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Chemistry, 14.04.2020 19:24 MacenParisi
1.Which description best summarizes the steps that take place during black hole formation, in the correct order?(1 point)
a. A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; core of star collapses.
b. Supernova triggers fusion reactions; massive star implodes due to extreme radiation; volume and mass of star increase rapidly.
c. Supernova explodes a massive star; remaining core expands; nuclear reactions diminish the effects of gravity.
d. A small star gains mass through fusion reactions; core of star collapses; increased radiation triggers a supernova.
2.Which of these characteristics of a star make it most likely to become a black hole? Select the two correct answers.(1 point)
a. Its mass is equal to that of the sun.
b. It is dying.
c. Its mass is greater than 20 times the mass of the sun.
d. It has an abundant supply of hydrogen.
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