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Chapter 23 - 1 Observing the Solar System
Right side
Vocabulary
    geocentric
    heliocentric
    ellipse
    inertia
1.  Greek ideas -
    A.  believed universe is perfect and unchangable
    B.  believed Earth centered
        1 . geocentric'
    C.  Ptolemy
        1.  believed moon and planets revolved around Earth
        2.  fig. 2, pg. 741
2.  Copernicus's idea-
    A.  believed sun-centered
        1.  heliocentric
3.  Galileo's observations
    A.  2 observations
        1.  moons around Jupiter
        2.  Venus's phases
4.  Brake and Kepler
    A.  Brake observed planets for 20 years
    B.  Kepler analyzed data
Summary

Left side
Compare and Contrast Table



Chapter 23-2  Sun
Right side
Vocabulary
    nuclear fusion
    core
    photosphere
    chromosphere
    corona
    solar wind
    sunspot
    prominence
    solar flare
1.  Sun's atmosphere
    A.  3 layers
        1.  photosphere
        2.  chromosphere
        3.  corona
    B.  fig. 7, pg. 747
2.  Features on the sun
    A.  sunspots
        1.  fig. 8, pg. 748
        2.  cooler gases don't give off as muchlight and look darker
        3.  vary over a period of 10-11 years
        4.  may affect Earth's climate
    B.  Prominences
        1.  loops that link sunsports
    C.  solar flares
        1.  explosions
Summary

Left side
wksht.



Chapter 23-5 - Comets, Asteroids, Meteors
Right side
Vocabulary
    asteroid
    meteor
    asteroid belt
    meteorioid
    comet
    meteorite
1.  Comets
    A.  Elliptical orbits
    B.  Main parts
        1.  nucleus = center
        2.  coma = brightest part
        3.  tail = gas pushed away from comet
2.  Asteroids
    A.  Located between Mars and Jupiter
        1.  over 300
        2.  called asteroid belt
3.  Meteors
    A.  Meteroid
        1.  chunk of rock or dust in space
    B.  Meteors
        1.  meteroid entering Earth's atmosphere
    C.  meteorites
        1.  hits Earth's surface
Summary

Left side
Table and question- How old will you be when Halley's comet comes around again?



Chapter 23-6 Life Beyond Earth?
Right side
1.  "Goldilocks Conditions"
    A.  What conditions make a living thing "alive"?
        1.  one or more cells
        2.  take in energy = use it to grow and develop
        3.  reproduce
        4.  gives off waste
    B.  Earth
        1.  Liquid water and suitable temperature and atmosphere for life
        2.  makes it "just right"
            a.  not too hot or too cold
        3.  are they the only conditions for life?
2.  Where have we found life on Earth?
    A.  Caves - deep inside rocks
    B.  Hot, hot springs
    C.  Hydrothermal vents
3.  What about Mars?
    A.  Maybe it had once had  conditions needed for life
    B.  fig. 33, pg. 776
4.  Europa
    A.  Best place to look for life
    B.  fig. 34, pg. 777
Summary

Left side
wksht.