1. Our Solar System

2. Bellringer: Write Your Response to News clip

3. Essential Question
Why is the solar system arranged the way it is, and when did it form?
Why are the planets, asteroids, Kuiper ice, other space objects in the positions where they are?
What processes are responsible for its current arangement?

4. Nebula)
Define, describe a nebula: large, loose, dust and gases, cold. A Star factory.

5. Unit 3: Nebular Hypothesis of the Origin of the Solar System page 70 in your notes, Describe each stage A,B,C,D,E

6. How density changed as it formed
Read pgs
Bullet point descriptions (2-3 words for 2-3 bullet points) for each picture
Focus on:
How density changed as it formed
The different forces acting on the system
Describe the flow of energy in the system
The temperature changes in the system
How different types of matter that formed.
The size of the solar system as it formed.
When the solar system static or changing? (Motion)

7.
Nebular hypothesis
Stephen Hawking's

8. Step 1. About 5 billion years ago Nebulae of gas (hydrogen and helium) and dust a light year across. Due to (the force) a nearby supernova explosion (?) it begins to contract. As it contracts, it spins faster. Flattens into a disk shape

9. Step 2: The center contracts and heats up forming a proto-star.
The Sun (99% of the mass) formed at the center
Sorting: Heavier, dense rock and metal gravitate toward the center.
Lighter density gas and dust get blown farther out

10. Step 3:
Repeated collisions caused the smaller pieces of solid material to collide and condense (combine) to form larger, rocky inner planets and asteroid belt .

11. Step 4: Within a few million years these bodies cooled, cleared their neighborhood and formed into the gassy outer planets.
Further cooling of the gases formed the icy planets Neptune and Uranus

12. Comparing the Planets: Rank’em from Most-Least by NAME
Distance
OrbitalPeriod
(year)
Diameter
Mass
Rotational period (day)
Density
g/cm3
# of
moons
Mean surface
Temp.
Orbital Velocity
Inclination of orbit M O S T
Neptune
Uranus
Saturn
Jupiter
Mars
Earth
Venus
Mercury L E A S T
*Table 6.1 on page 148 in the Astronomy and Appendix A-6 in back of text book

14. Bell Work: Which planet has the …
Most mass, least mass?
Longest day, shortest day?
Most moons, least # moons?
Most density, least density?
Highest temperature, lowest temp?
Jupiter, mercury
Venus, Jupiter
Jupiter, mercury
Earth, Saturn,
Venus, Uranus

15. Planet Data Whiteboard Activity
You will need your Planet Data charts and graphs, a whiteboard, 4 different colored markers (names in each color!)
Information you need to include
Title, chart outline, graph skeleton
Phenomenon: data observed [put in your chart and demonstrated on your graph]
Objects: planets (brown marker). Also be sure you can define each type of data (orbital year, etc)
Motion/Model: Tie your information together in your summary statement to explain the phenomena observed and how this data may relate to the “motion” of planet sorting 

16. Make a Whiteboard with a Graph (Trend and Plotted Point line), Summary Statement, and the info below compared to the Distance of each of the following:
Table 1: Orbital Rotation (days)
Table 2: Density
Table 3: Velocity
Table 4: Temperature
Table 5: Orbital year (Period of Revolution)
Table 6: Mass
Table 7: Diameter
Table 8: Number of Moons

17. Putting it all together: What you know about the Planets https://www
Planets fall into two categories:
Terrestrial: four inner planets closest to the Sun; rocky, metallic
Jovian or Gas Giants: farthest, outer planets from the Sun; gas, ice
Pluto a dwarf planet

18. How do the following correlate to the planets distance from the sun
How do the following correlate to the planets distance from the sun? Positively negatively or no relationship What could account for this?
Orbital Rotation (days)
Density
Velocity
Temperature
Orbital year (Period of Revolution)
Mass
Diameter
Number of Moons

20. The INNER Planets What they have in common:
Venus
What they have in common:
_______ proximity to the Sun
Rotate more ______ than Jovian planets
_____ density
______ temperatures
relatively _______ spaced orbits
_______ orbital years
______ masses
______ diameter
posses weak magnetic fields
have few or no_______.

21. The OUTER Planets What they have in common:
____ from the Sun,
_________density
rotate ___________
______ temperatures
________ spaced orbits with.
__________ masses
________diameter
orbited by many __________.

22. Observe the Demo and write what each part represents:
Place a hot plate under a flask.
Fill the flask 2/3rds full of water.
2. Pour several pebbles, metals and large gravel pieces into the bottle.
3. Obtain a ¼ of a piece of Alka-Seltzer. Quickly place it in the bottle and put a balloon cap on it.
Gently shake the flask for several seconds.
After several moments remove the flask from the hot plate

23. Draw a Particle Diagram from the demo of
Solid Pebbles in the bottom of the flask
Gas in balloon above hot water
Gas in balloon above cooled water

24. Finish the Diameter vs. Density of the Planets Graph from yesterday
Gas giants
Grab a brown, green and red marker.
Color the Inner planets Red,
Jupiter and Saturn in brown, Uranus and Neptune in green
Why ARE Neptune and Uranus not with the other two gas planets? Look at their temps. So cold that gas forms ice and is more densely packed
Rocky / inner

25. Bellwork: True/False The largest planets have the largest density.
All inner and outer planets have moons.
The terrestrial planets are gaseous.
The outer planets are more closely spaced.
The outer planets have rings.
The outer planets rotate faster than earth

26. Exit Slip
1. How are the planets in the solar system sorted? 2. Which planets are more dense? define density:

27. Earth’s Early Heat
Repeated impacts from the bombardment by high velocity meteorites and comets
generated immense amounts of HEAT ENERGY and melted the metals and rock on the young planet.
The denser materials like iron (Fe) sank
into the core of the Earth.
lighter silicates (Si), oxygen (O) compounds, rise near the surface.
Gravitational pressure from massive layers of material produce heat
decay of radioactive elements in the
Earth, generate HEAT