SHORT PRESENTATION ABOUT THE BIG BANG THEORY

2. CHEMISTRY
ASTRONOMY
PHYSICS

3.  The science of astronomy—the study of the
universe—is very useful in examining the
origins of our own environment.
 The study of objects and matter outside the
earth’s atmosphere and of their physical and
chemical properties.
 To understand explanations of our planet’s
origin, it is useful to learn something about
the other members of our solar system.

4.  A science that deals with the composition,
structure, and properties of substances and
with the transformations that they undergo.

5.  A science that deals with matter and energy
and the way they act on each other in heat,
light, electricity, and sound.
 Study of physical forces and qualities: the
scientific study of matter, energy, force, and
motion, and the way they relate to each
other.

6. THE
BIG
BANG

8.  The Big Bang Theory is one of the leading
misconceptions as to how the universe
started. It’s popular because it’s easy to
understand where most people would
associate it to a big explosion, hence the
name Big Bang.
 However, if we take a closer look on how the
name was put together, there could be a
wrong usage of words where it gives a “false”
impression to most of us.

9.  currently accepted explanation of the
beginning of the universe.
 The universe may have begun as an infinitely
hot and dense singularity, a point where all of
space, time, matter and energy were
concentrated.

10.  That singularity then began to rapidly expand
in a process known as inflation. Space itself
expanded faster than the speed of light. In this
still hot and dense mass of the universe, pairs
of matter and antimatter were formed from
energy, but these pairs cancelled each other
back into energy (annihilation).

11.  The universe cooled down as it
expanded. An excess of matter
(electrons, protons, neutrons and other
particles) scattered everywhere.

12.  Protons and neutrons came together to form
different types of nucleus by nucleosynthesis
or nuclear fusion.
 Much later on, electrons started to bind to
protons and nuclei forming neutral atoms in a
process called recombination.

13.  Gravity caused these atoms to collapse onto
one another to form stars and galaxies and
eventually, other matter.
 This still happens until today. Space also
continues to expand at an accelerating rate,
thus increasing the distance between the
matters inside it.

14. Edwin Hubble
-an American astronomer provided some of the
greatest supporting evidence for the big bang theory
-proved that the nebulae were distance galaxies
containing stars using a 2.5m telescope at California’s
Mt. Wilson Observatory in 1929.

15. - He found that the galaxies were moving away
from each other.
- Hubble concluded that the universe is
expanding and that the distance between
galaxies is continuously growing all the time.

16. George Gamow, Ralf Alpher and
Hans Bethe hypothesized that the
universe expanded into being
several billion years ago.

17. 1. Measurements showed that the universe is
expanding and the galaxies are moving away
from one another at high speed.
2. A cosmic background radiation was detected.
The radiation observed was the same in all
directions and found to be independent of
direction.

18. 3. Primordial Helium was discovered. Scientist
believed that Helium and Hydrogen, were the
first elements to be formed in the early stages
of the evolution of the universe.

20.  A few seconds after the big bang,
protons, neutrons, and electrons,
consisted the universe.
 At present, the universe consists of
mostly hydrogen and helium.

21.  The Big Bang was NOT an explosion
that carried matter outward from a
point. It refers to the rapid inflation of
space itself.
 The model is a work in progress that
we are still finding evidence for until
now.