Question

1. Which among the following is NOT TRUE about Stellar Nucleosynthesis?
A. Started 100 million years after Big Bang.
B. Nickel is the last element to form inside a star.
C. Hydrogen and Helium are also being formed in this stage.
D. Body composition of all living things are formed inside the stars.

2. Stars have multiple interior layers where different elements are formed. Temperature in each layer determines the element that can be synthesized in them. Hydrogen forms at the outermost layer, Carbon forms in the third layer, and Iron form at the last layer. Which among the following is TRUE about the multiple interior layers of the stars?
A. Temperature in each layer is not constant, therefore elements formed in each layer is randomly arranged.
B. Outermost layer of stars will always be the hottest layer.
C. Elements dictates the temperature of each layer of stars.
D. The temperature of each layer of star is directly proportional with its depth.

3. Which of the following reasons consider stars as the factory of elements?
A. Stars releases energy that is used by elements to synthesize.
B. All essential elements are formed from stars, thus synthetic elements are derived from them.
C. All of the elements are synthesized by stars.
D. Stars gave birth to all elements written in the periodic table.

4. Which among the following is NOT a process of synthesizing elements inside a star?
A. Radioactive decay
B. Proton-proton fusion
C. Triple Alpha Process
D. CNO cycle

5. Arrange the following statements according to its phase of occurrence:
I. Radioactive decay of heavy isotopes
II. Accumulation of neutron of elements in the cloud of star dust
III. Gold, silver, and nickel were formed
IV. Massive explosion of star
A. II, IV, I, III
B. IV, II, I, III
C. IV, I, II, III
D. II, I, IV, III

6. What is the first element created in the universe?
A. Beryllium
B. Helium
C. Hydrogen
D. Lithium

7. What makes the formation of elements possible?
A. Creation of star dust
B. Existence of pre-existing elements
C. Increase in temperature of the universe
D. Cooling of the universe


8. Oxygen is created at what phase of nucleosynthesis?
A. Big bang Nucleosynthesis
B. Stellar Nucleosynthesis
C. Neutron Capture Reaction
D. Supernova

9. Which among the following is NOT TRUE about Neutron Capture Reaction?
A. Heavier elements than iron are formed
B. All of the new elements in the universe was already discovered
C. All heavier elements than iron undergone radioactive decay
D. Gold is one of the elements formed after the explosions of stars

10. Which of the following elements is the most abundant element in the universe?
A. Oxygen
B. Hydrogen
C. Carbon
D. Helium

Answer 1

Answer:

1)d

2)c

3)d

4)a

5)a

6)c

7)d

8)b

9)a

10)c

Answer 2

Answer:

1. C. Hydrogen and Helium are also being formed in this stage.
2. A. Temperature in each layer is not constant, therefore elements formed in each layer is randomly arranged
3. B. All essential elements are formed from stars, thus synthetic elements are derived from them.
4. D. CNO cycle
5. A. II, IV, I, III

Explanation: