1. Solar System Formation
Is this where we came from?
TEACHER NOTES below
Beforehand:
This ppt is text only, so do a Google image search and sprinkle relevant images throughout the ppt. That’s what the extra room on the right side is for.
If you’re using this ppt along with your textbook line by line, the two probably won’t match up perfectly, so you’ll want to go through this ppt and change any wording above to match what your book says. Anything different will confuse your students (not good). If your book doesn’t cover this, then just go with the ppt as-is.
Print these ppt slides for yourself so know what what comes next as you’re doing this lesson.
Materials per student: sheet of lined notebook paper
Opening demonstration (optional): (removed for preview)
Procedure:
Have students open their books to page ______ that describes the solar system formation. (If this is not in your book at all, just use the PowerPoint to lead the activity, and have students write down the steps when they’re shown.)
Read the section aloud from book about the Protostellar Disk, all in one continuous read.
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Notes:
Beforehand, go through and write all this out on a sheet of paper for yourself. You’ll be surprised at how much better you communicate during the lesson.

2. I. Protostellar Disk Forms
How Might Our Solar System Have Formed?
Started as a solar nebula
Force (from nearby exploding star?) caused it to compress & collapse
I. Protostellar Disk Forms
Gravity pulls most of the mass towards center
Begins to rotate faster and faster
Flattens into a disk called a “protostellar disk”
II. Sun Forms
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3. III.Planetesimals Form
Away from center, gravity causes particles to collect in a process called “accretion” (think “sticky collisons”)
III.Planetesimals Form
IV. Planets Form
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(On the back side)