1
2
3
The Earth’s Cross-Section

Mantle
•
Upper- Lithosphere
•
Lower- Asthenosphere

Crust

Inner Core

Outer Core
4
The Geology & Atmosphere of the
Earth

Mesosphere

Stratosphere

Ionosphere

Troposphere
5
Terrestrial Planets
Terrestrial Planets
• Few moons and
have no existent
rings
• Close to the Sun
•Metal and rock
• Little in both
mass and size
6
Geology
& Atmosphere of Terrestrial Planets
Geology
o
Volcanic and tectonic
activities are primarily
caused by internal heat
from radioactive decay.
o
Staying geologically active
today are large planets
which can retain enough
internal heat.
Atmosphere
7
Objects in the Solar System

Mercury - 0
 Venus - 0
 Earth - 1
 Mars - 2
 Jupiter - 62
 Saturn - 33
 Uranus - 27
 Neptune - 13
 Pluto - 1
Natural Satellite’s
Comets
8
Objects in the Solar System

NEO Asteroids
asteroids
 Near Earth Objects

Meteors

Minor planets
 Very rare meteors that are
very bright and have the
highest chance to explode.
 Asteroids are very small
to be considered as
planets
Fireballs

Meteoroids
 These are asteroids that
are in the course of
collision towards the earth.
9
Earth in comparison with
Mars and Exoplanet 51 Peg
half of Earth’s diameter
Atmospheric pressure
 Oxygen level
 Volcanoes
 Ozone layer
 Surface area
 Moons
Mars
•
•
•
•
Atmosphere
Yellow hue
Orbit
Jovian
• Hot
51 peg B
10
Earth in comparison with
asteroids and comets
Numbers
Orbit
Location
Composition
Size/Shape
Asteroids
Temperature
Orbit
Composition
Size
comets
11
Bennett, J. O., Donahue, M., Schneider, N. O., & Voit, M. (2010). The cosmic
perspective (6th ed.). Boston, MA: Addison Wesley.
IMAGE SOURCE PAGE:
http://hendrix2.uoregon.edu/~imamura/121/lecture-7/lecture-7.html
Edin, H. (2008). Okie Tex Star Party. Retrieved from:
http://living-creatures.blogspot.com/2008/10/bright-bolide.html
International Space Fellowship (2002). A long-period Comet:
http://spacefellowship.com/news/art11239/crashing-comets-notlikely-the-cause-of-earth-s-mass-extinctions.html
Prado, M. (2012). Utilization of Asteroids Near Earth. Retrieved from:
http://www.permanent.com/near-earth-asteroids-overview.html
Space Today (2012). Moons of the Solar System. Retrieved from:
http://www.spacetoday.org/SolSys/Moons/MoonsSolSys.html
51 Pegasi. Retrieved from:
http://en.wikipedia.org/wiki/51_Pegasi
12
Dynamic Earth. Retrieved from: http://www.learner.org/interactives/dynamicearth/structure.html
Earth’s Atmosphere. Retrieved from:
http://csep10.phys.utk.edu/astr161/ lect/earth/atmosphere.html
51 Peg B. Retrieved from:
http://www.extrasolar.net/planettour.asp?PlanetID=1
Mars. Retrieved from:
www.space.com/47-mars-the-red-planet-fourth-planet-from-the-sun
Asteroid. Retrieved from:
nssdc.gsfc.nasa.gov/photo_gallery/photogallery-asteroids.html
Comet. Retrieved from:
starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/comets.html
13