Long Test # 1 in Physical Science

1. “HONESTY IS A VERYEXPENSIVE GIFT.DON’T EXPECT IT FROM CHEAP PEOPLE.” ~RBALONGTEST1PHYSCI~
I. Write the letter of the correct answer.
1. Which of these is true about the Big Bang model?
A. Thesingularity is an established, well-defined part of the
model.
B. Cosmic expansion stopped at some point in time.
C. Part of its proof is the amounts of H and He we have in the
universe today.
D. The Big Bang was a big explosion that threw matter into
many different directions.
2. Which of the following processes is likely to generate the
heaviest element?
A. CNO cycle C. triple-alpha process
B. r-process D. Big Bang nucleosynthesis
3. Which of the following reactions is not a part of the alpha
ladder?
4. If an element is used up by a star in fusion, it is sometimes
called “burning” even though no actual combustion occurs.
Which of the following processes is likely to involve “carbon
burning”?
A. alpha ladder C. CNO cycle
B. triple-alpha process D. s-process
5. Arrange the stages of the Big Bang Theory
I. recombination II. Inflation
III. Big Bang singularity IV. nucleosynthesis
A. I, II, III, IV C. II, I, III, IV
B. III, II, IV, I D. III, II, I, IV
6. What is the effect of alpha ladder to the abundanceof even-
numbered elements?
A. Even-numbered elements are more abundant than odd-
numbered
B. Even-numbered elements are lesser that the odd-numbered
C. Even-numbered elements have the same abundance with
the odd-numbered
D. It did not affect the abundanceof the elements.
7. Which of the following is not a type of nucleosynthesis?
A. Stellar C. Big Bang
B. Supernova D. Planetary
8. Because of this piece of evidence, the scientist discovered
that galaxies moverelatively farther apart.
A. CMB C. elements in the universe
B. redshift D. stellar evidence
9. Which of the following is correct about the abundance of H
and He atoms in the universe?
A. H is 75% while He is 26%
B. H is 74 % while He is 24%
C. H is 75% while He is 30%
D. H is 99% while He is 1%
10. What is this radiation that was left as a result of
recombination called?
A. CMB C. elements in the universe
B. redshift D. electromagnetic radiation
II. Give the correct way of writing the symbol of the
following elements given their protons, neutrons and
electrons:
11. Phosphorus (P) has 15 protons, 15 electrons and 17
neutrons.
12. Cobalt (Co) has 27 protons, 28 electrons, and 31 neutrons.
13. Vanadium (V) has 23 protons, 20 electrons and 28 neutrons.
14. Magnesium (Mg) has 12 protons, 12 electrons and 12
neutrons.
15. Bromine (Br) has 35 protons, 36 electrons, and 45 neutrons.
III. Write BALANCED if the number of protons and
neutrons are the same for both sides of the equation. Put
NOT BALANCED if it is not the same.
16.) 𝐷 + 𝑝+
→ 𝐻𝑒 + 2
4
1
2
17.) 𝑇 + 𝐻𝑒2
4
→ 𝐿𝑖 + 3
7
1
3
18.) 𝐿𝑖 + 𝑝+
→ 𝐻𝑒 +2
4
3
7
𝐻𝑒2
4
19.) 𝐻𝑒+ 𝑛0
2
3
→ 𝑇 + 𝑝+
1
3
20.) 𝐷 + 𝐷 → 𝐻𝑒 + 𝑛0
2
4
1
2
1
2
21.) 𝐻𝑒 + 𝐻𝑒 → 𝐵𝑒 + 4
7
2
4
2
3
IV. Complete the diagram below:
Choose from the words below:
A. alpha ladder
B. CNO cycle
C. proton-proton chain reaction
D. main-sequence stars
E. Red giant stars/Supergiant stars
F. triple alpha process
G. r-process
H. s-process
I. Supernova explosions
J. Big Bang nucleosynthesis
V. Choose 2 questions to answer. (5 pts each)
a. What are the contradictions to the Big Bang theory? Give at
least 2 and explain each.
b. Explain at least one of the evidences of the Big Bang theory.
c. How would you relate the “balloon with sticker activity” to
Big Bang theory? Explain.
d. What are isotopes? Explain and give examples.
Rubrics:
Correct explanation of the lessons learned- 3 pts
Grammar and spelling- 1 pt.
Organization of ideas- 1 pt.
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2. “HONESTY IS A VERYEXPENSIVE GIFT.DON’T EXPECT IT FROM CHEAP PEOPLE.” ~RBALONGTEST1PHYSCI~