Our Solar System http://www.youtube.com/watch?v=pUZ2tfr1bsU

Bellringer: Write Your Response to News clip http://www.cnn.com/2015/09/28/us/mars-nasa-announcement/

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?

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

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

How density changed as it formed Read pgs. 70-71 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)

https://www.youtube.com/watch?v=PL3YNQK960Y Nebular hypothesis https://www.youtube.com/watch?v=Uhy1fucSRQI Stephen Hawking's

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

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

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 .

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

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

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

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 

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

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

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

The INNER Planets What they have in common: http://www.youtube.com/watch?v=MfD0pxcDGpI&sns=em http://www.youtube.com/watch?v=HqFVxWfVtoo&sns=em 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_______.

The OUTER Planets What they have in common: ____ from the Sun, _________density rotate ___________ ______ temperatures ________ spaced orbits with. __________ masses ________diameter orbited by many __________. http://www.youtube.com/watch?v=s56pxa9lpvo&sns=em

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

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

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

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

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

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