The document outlines a class activity related to the Big Bang theory, focusing on identifying words related to the topic using given pictures and letters. It explains the Big Bang theory as the origin of the universe, detailing its expansion from a singularity and supporting evidence such as the cosmic microwave background and redshift. Additionally, it discusses nucleosynthesis, the formation of light elements after the Big Bang, and poses questions to engage students in understanding key concepts.

1. PRAYER

2. Welcome back to
our class!

3. Activity: Guess the Word
Combine the given pictures and letters to
form word/s related to our topic for today.

4. Identify the following words using the
given pictures below.
G RY
BIG BANG THEORY

5. Identify the following words using the
given pictures below.
HYDROGEN
GEN

6. Identify the following words using the
given pictures below.
UNIVERSE
NI

7. Identify the following words using the
given pictures below.
EXPANSION
N

8. Cosmic Origin
of Elements

9. Learning Objective:
✔ Determine the elements formed after
the Big Bang explosion.

11. Big Bang
Theory

12. Big Bang Theory
The theory that describes the universe as
originating in an infinitely tiny, infinitely
dense point 14 billion years ago, from
where it has been expanding ever since.

15. A concept that universe
expanded from an infinitely
small, infinitely dense, and
infinitely hot point that is
believed to have existed before
the big bang.
a. Bindu
b. Singularity
c. Rig Veda
d. Primordial mixture

18. Why is the Big Bang Theory the most
widely accepted theory for the origin
of the universe?
A. The events that happened in the big
bang theory are the same as how God
created everything.
B. Science has already proven it without
any reservations.
C. Majority of scientists in the world
conclude that it is the best idea so far.
D. The theory has observable evidence
such as the abundance of elements,
expansion of space, and cosmic
microwave background radiation.

19. 1. Arno Penzias
and Robert Wilson 2. Edwin Hubble 3. Light Elements
Evidences of Big Bang Theory

21. The thermal leftover of
the transition phase
occurred when the hot
early universe cooled
enough for atoms to
combine.
Cosmic Microwave Background
(CMB)

22. 1. Arno Penzias
and Robert Wilson 2. Edwin Hubble 3. Light Elements
Evidences of Big Bang Theory

23. Edwin Hubble
Observed that many
stars and galaxies shine
with light shifted toward
the red end of the visible
spectrum.
REDSHIFT

26. 1. Arno Penzias
and Robert Wilson 2. Edwin Hubble 3. Light Elements
Evidences of Big Bang Theory

28. The First
Elements

32. Nucleosynthesis

33. Nucleosynthesis
• The process that creates new atomic nuclei from
pre-existing nucleons.

35. Big Bang
Nucleosynthesis

36. Big Bang Nucleosynthesis – the production
of light elements

39. ISOTOPES
•atoms with the same number of
protons but differing numbers of
neutrons.

41. How will Helium and
other elements form?

44. ??

46. ??

48. The Universe now is made up of
98% of hydrogen and helium
atoms.

50. Which isotope of hydrogen has two neutrons?
A. Protium
B. Deuterium
C. Tritium
D. Neutronium

51. Which of the following elements do not
formed after the big bang explosion?
A. Hydrogen
B. Oxygen
C. Beryllium
D. Lithium

52. Which of the following is an isotope of
Hydrogen
A. He - 4
B. Proton
C. Deuterium
D. Nucleons

53. What is primordial nucleosynthesis?
A. The formation of elements during the first
few minutes of the universe.
B. The synthesis of elements in supernovae.
C. The production of elements in the interiors
of stars.
D. The creation of elements in cosmic rays.

54. What is the term for isotopes with the same
number of protons but different numbers of
neutrons?
A. Isotopes
B. Isobars
C. Isomers
D. Isotones