Q1C1L2 The Origin of the Solar System.pptx

1. The Origin of the Solar System
Chapter 1 │ Lesson 2

2. QUESTIONS TO PONDER
•How old is the universe and how did it
form?
•From what we have discussed, which of
the theories do you think is believable
and you consider as the best to explain
the theories on the origin of the

3. What made
it possible
for the
planets to
become as
big as they
are?

4. How do you
think the
solar system
existed?

5. Model
•Is a representation
of an idea, an object,
or even a process that
is used to describe
and explain a
phenomenon or
event, such as the
origin of the solar
system.

6. 2 popular models described
the model of the universe
Geocentric model of the
universe
Heliocentric model of the
universe

7. Geocentric model
of the universe
States that the
Earth is the center
of the solar system
famously proposed
by Claudius
Ptolemy

8. Geocentric model
•During the time of Claudius
Ptolemy, the geocentric model
was the accepted explanation of
the different motions in the
universe. The sun, moon, stars
and the five planets (Mercury,
Venus, Mars, Jupiter and Saturn)
move around the Earth.

9. Heliocentric model
of the universe
States that the sun
is the center of the
solar system
famously proposed
by Nicholaus
Copernicus

10. Heliocentric model
• This opposes the geocentric
model by developing
another model that
explained the structure of
the solar system. This
proposal became the
foundation of the
Copernican revolution. This
models puts the Sun at the
center of the solar system
instead of the Earth.

11. How do you
think the
solar system
existed?

12. The following scientific
theories present the
explanation on the origin
of the solar system.
•Nebular hypothesis
• Kant-Laplace
hypothesis
•Planetesimals and
tidal theories
•Protoplanets theory

13. Nebular
hypothesis
•Immanuel Kant and
Pierre-Simon Laplace
were the first to
propose the earliest
theory of how the
solar system
originated.

14. •The Kant-Laplace
Nebular Hypothesis
presumes that the
solar system began
as a cloud of
dispersed
interstellar gas
called nebula.
Nebular hypothesis

15. •The mutual
gravitational
attraction between
particles caused them
to start moving and
colliding, and they
were kept together by
electrostatic forces.
Nebular hypothesis

16. •The resulting
nebular
aggregates
became larger
than others, grew
more rapidly, and
ultimately became
the planets.
Nebular hypothesis

17. Planetesimal and tidal theories
• Thomas Chrowder Chamberlin
and Forest Ray Moulton
proposed that the star passed
closed enough to the sun,
creating huge tides and causing
materials to be ejected. The
smaller masses quickly cooled
and became numerous smaller
bodies called planetesimals. the
accretion of the planetesimals
created larger bodies or
protoplanets.

18. Planetesimal and tidal theories
• Another theory proposed by James
Hopwood Jeans and Harold Jeffreys
was a variation of the planetesimal
concept. The Jean-Jeffreys’ Tidal
Theory suggested that when a huge
tidal wave was created from sun’s
collision with another star, a long
filament was drawn out and detached
from its principal mass. As the gaseous
materials condensed, it separated into
masses of various sizes and condensed
to form the planets.

19. Protoplanet
theory
• Is a modified version of the nebular hypothesis,
which incorporates modern knowledge of matter
formed independently by astronomers Gerard
Kuiper and Carl von Weizsacker. The dense area of
the nebula and the gaseous matter surrounding it
ceased to rotate uniformly.

20. Protoplanet
theory
• Under the influence of turbulence and
tidal action, the nebula broke into
whirlpools of gas within a rotating mass
called protoplanet.