Earth & Life Science Solar System (lesson 2)
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Transcript of Earth & Life Science Solar System (lesson 2)
The SOLAR SYSTEM(Its Origin & Evolution)
Sources: 1. http://
csep10.phys.utk.edu/astr161/lect/solarsys/solarsys.html
,2. TG Earth & Life Science
Large Scale Features
Small Scale Features
Relative Sizes & Scale
Masses & Densities
Revolution & Rotation
Angular Momentum
Mars Exploratio
n
Encounter
Hypothesis
Protoplanet Hypothesis
Heliocentric & Geocentric
Model
Current Advancement/Information
Nebular Hypothesis
Rosetta’s Comet
Pluto Flyby
Keep in mind the guide questions:1. Where do you think is the mass of the Solar System concentrated?2. How will you describe the shape of the orbit of the planets?3. Where do planets move around? How do they move, clockwise or counter clockwise?4. Do all planets revolve at the same rate? rotate at the same rate?5. What’s the difference between prograde and retrograde?
• The masses of the planets are also concentrated in the Gas Giant planets Jupiter, Saturn, Uranus, and Neptune.
• The large mass of these planets comes from their absolute sizes, not their densities.
• The inner planets are by far the most dense.
• As discovered by Kepler, the planets orbit on ellipses with the Sun at one focus. In addition, the planets all revolve in the same direction on their orbits (direct orbital motion).
Prograde & Retrograde
Prograde - counterclockwise when viewed from above the Earth's North Pole.
Retrograde - clockwise when viewed from above the Earth's North Pole.
Watch this video- Retrograde Motion and ….
The inner terrestrial planets
Inner terrestrial planets are made of materials with high melting points such as silicates, iron , and nickel. They rotate slower, have thin or no atmosphere, higher densities, and lower contents of volatiles - hydrogen, helium, and noble gases.
The OUTER FOUR PLANETS
The outer four planets - Jupiter, Saturn, Uranus and Neptune are called "gas giants" because of the dominance of gases and their larger size. They rotate faster, have thick atmosphere, lower densities, and fluid interiors rich in hydrogen, helium and ices (water, ammonia, methane).
Let’s Wrap-up !1. Where do you think is the mass of the
Solar System concentrated?2. How will you describe the shape of the orbit of the planets?3. Where do planets move around? How do they move, clockwise or counter clockwise?4. Do all planets revolve at the same rate? rotate at the same rate?5. What’s the difference between prograde and retrograde?
Let’s Wrap-up !1. Where do you think is the mass of the
Solar System concentrated?* At the center (SUN)
Let’s Wrap-up !2. How will you describe the shape of the orbit of the planets?* Orbits are elliptical.
Let’s Wrap-up !3. Where do planets revolve around? How do they move, clockwise or counter clockwise?• Planets revolve around the SUN
and are on the same plane.• Most planets rotate prograde.
Let’s Wrap-up !4. Do all planets revolve at the same rate? rotate at the same rate?• No. Innermost planets revolve
faster.• Innermost planets rotate
slower.
Let’s Wrap-up !5. What’s the difference between prograde and retrograde?Prograde - counterclockwise when viewed from above the Earth's North Pole.
Retrograde - clockwise when viewed from above the Earth's North Pole.