The document summarizes key components of the solar system. It describes the formation of the solar system and divides its members into four regions: inner planets, asteroid belt, outer planets, and Oort's cloud. It provides details on the composition and characteristics of objects within each region. The document also summarizes information about meteoroids, comets, Kuiper belt objects, and the structure and atmospheric layers of the Sun.

1. Lesson 7
THE SOLAR
SYSTEM

2. Formation of the Universe

3. 7.1 Solar System
Formation
What do you think about
this picture?
Who can explain this
picture?

4. 
4
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5. 
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6. Planetary Composition, Distance
from the Sun, and Melting Point

7. 7.2 Members of Solar
System
 divide by formation and the
elements in 4 region
1. Inner planets
2. Asteroid belt
3. Outer planets
4. Oort’s cloud

8. 1. Inner planets
 The terrestrial planets
 Between the Sun and Asteroid belt
 Mercury, Venus, Earth ,Mars
 The planets that are small and
rocky, Metal Core.

9. 2. asteroid belt
 Most asteroids lie between the
orbits of Mars and Jupiter.
 An asteroid is a small, rocky body
whose diameter can range from a
few hundred kilometers to less than
a kilometer.
 Example : Gaspra, Ceres, Pallas

11. 3. Outer planets Giant
planets, The Jovian planets)
 The Giant planets, with huge gas ,
Hydrogen and Helium.
 Jupiter, Saturn, Uranus, and
Neptune.

12. 4. Oort’s cloud
 The Oort’s cloud are comets with
long orbital periods appear to be
distributed in all directions from the
sun, forming a spherical shell
around the solar system

15. Meteoroid
 A meteoroid is a small, solid
particle that travels through space.
 A meteor is the luminous
phenomenon observed when a
meteoroid enters Earth’s
atmosphere and burns up,
popularly called a shooting star
 A meteorite( ) is any

16. Comet’s Tail Points Away from the Sun

17. Kuiper belt object
 Like the asteroids in the inner solar
system
 Most Kuiper belt comets move in
nearly circular orbits that lie
roughly in the same plane as the
planets
 Example Objects : Pluto , Eris

20. 7.3 The Sun
 The Sun is informally designated as
a yellow dwarf, based on spectral
class, is G2
 surface temperature of
approximately 5778 K (5505 C)
 It has a diameter of about
1,392,684 km about 109 times that
of Earth
30

21.  The Sun device into 2 part
 1. the Solar Interior.
 2. Atmospheric Layers.

22. The Solar Interior :
divide into 3 layer
 1. Core : A temperature of
Core close to 15.7 million kelvin.
Energy is produced by nuclear
fusion.
 2. Radiation zone
 3. Convection zone

24. Atmospheric layers : divide
into 3 layer
 1. photosphere
5,800
 2. chromosphere
25,000
 3. corona

27. 
Solar wind 200-
900
 solar
flare
solar storms