1 of 10 〉
Name the branch of astronomy that involves the origin and evolution of the universe.
Cosmology
Meteorology
Petrology
Orology
Answer: Cosmology Explanation:Cosmology is "the scientific study of the large-scale properties of the universe as a whole."
2 of 10 〉
Why does a star produce its own light and heat?
Nuclear fission
Nuclear fusion
Chemical reaction
None
Answer: Nuclear fusion Explanation:Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
1 of 10 〉
Name the branch of astronomy that involves the origin and evolution of the universe.
Cosmology
Meteorology
Petrology
Orology
Answer: Cosmology Explanation:Cosmology is "the scientific study of the large-scale properties of the universe as a whole."
2 of 10 〉
Why does a star produce its own light and heat?
Nuclear fission
Nuclear fusion
Chemical reaction
None
Answer: Nuclear fusion Explanation:Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.