NUCLEOSYNTHESIS

Which of the following refers to the process of producing the light elements such as hydrogen and helium?

• Cosmic ray spallation

• Big Bang Nucleosynthesis

• Stellar Nucleosynthesis

• Nuclear fusion

Which of the following describes stellar nucleosynthesis?

• The process of which elements are formed within the stars.

• The formation of elements during a supernova explosion.

• The process in which elements are produced in gas clouds.

• The formation of light elements such as hydrogen and helium.

How did the clouds of gas and dust pull together leading to formation of protostar?

• Due to decrease of temperature in the universe

• Due to gravity

• Due to increase of pressure

• Due to the electromagnetic force

Which are the two (2) most abundant elements in the universe? (Click 2 answers.)

• Oxygen

• Hydrogen

• Lithium

• Helium

There are (a)   number of elements formed during the Carbon- Nitrogen- Oxygen (CNO) Cycle during the stellar nucleosynthesis. (Your answer must be a number.)

Aside from hydrogen and helium, which of the following are the other two (2) light elements being formed during the Big Bang nucleosynthesis? (Click 2 answers.)

• Carbon

• Nitrogen

• Lithium

• Helium

• Beryllium

Which is TRUE about beryllium- 7?

• Formed during stellar nucleosynthesis

• Formed after fusion of helium- 3 and helium- 4

• Formed after fusion of helium- 4 and hydrogen- 3

• Lightest element formed in the universe