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NUCLEOSYNTHESIS

Total questions: 7

Worksheet time: 3mins

Name
Class
Date
1.

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

a)

Cosmic ray spallation

b)

Big Bang Nucleosynthesis

c)

Stellar Nucleosynthesis

d)

Nuclear fusion

2.

Which of the following describes stellar nucleosynthesis?

a)

The process of which elements are formed within the stars.

b)

The formation of elements during a supernova explosion.

c)

The process in which elements are produced in gas clouds.

d)

The formation of light elements such as hydrogen and helium.

3.

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

a)

Due to decrease of temperature in the universe

b)

Due to gravity

c)

Due to increase of pressure

d)

Due to the electromagnetic force

4.

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

a)

Oxygen

b)

Hydrogen

c)

Lithium

d)

Helium

5.

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

6.

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.)

a)

Carbon

b)

Nitrogen

c)

Lithium

d)

Helium

e)

Beryllium

7.

Which is TRUE about beryllium- 7?

a)

Formed during stellar nucleosynthesis

b)

Formed after fusion of helium- 3 and helium- 4

c)

Formed after fusion of helium- 4 and hydrogen- 3

d)

Lightest element formed in the universe