1. Warm Up – Page 172
What do you need to review for
tomorrow’s test over the history of
exploration and the Sun-Earth-Moon
System?

2. 2012 Spring Sky Watch Challenge
• Week 2, Level 2
Challenge: Orion Nebula
• http://www.youtube.com/watch?v=xy5bbw-wYJo
• Reminder: Planet and
Week 1 Challenge
reports are due
tomorrow!

3. Test Info
• 30 questions
– 5 multiple choice
– 5 modified true/false – if false, make it true
– 5 fill-in-the-blank
– 5 short answer
– 5 matching
• Describing moon phases/info
– 5 drawing/labeling diagrams
• Moon Phases – drawing you need to label
• Draw and label solar eclipse – inc. umbra/penumbra
• Draw and label a lunar eclipse – inc. umbra/penumbra
• Draw the sun and 4 earth’s labeling spring, summer, fall, winter
• Why are you more likely to see a lunar eclipse

4. History of Exploration
• Heliocentrism vs. geocentrism
• Contributions
– Ptolemy
– Kepler & Brahe
– Copernicus
– Galileo
– Newton – what gravity & inertia are & do

5. Sun-Earth-Moon System
• Rotation and revolution
• Days
• Years
• Months
• Weeks

6. Cram Review Guide – Page 173
• History
– Ptolemy – geocentrism (Earth-centered)
– Copernicus – heliocentrism (Sun- centered)
– Kepler (Brahe –data) – orbit of planets are elliptical
– Galileo – used telescope: evidence for helio: sunspots,
Venus has phases & Jupiter has moons go around it
– Newton – how planets stay in orbit- gravity and
inertia
• Gravity – pulls objects to the sun
• Inertia – keeps them moving in a straight line
• Together – they keep planets in orbit around the Sun

7. Sun-Earth-Moon
• Rotation – spin on axis – day and night
• Revolution – orbit – years
• Month – moon’s revolution
• Weeks – 5 planets, moon & sun

8. Seasons
• http://www.mrdowling.com/601-seasons.html

9. Moon Phases
http://neely1.edublogs.org/2010/10/27/our-moons-phases/

10. Eclipses
http://vnatsci.ltu.edu/s_schneider/astro/eclipse/lun2000.shtml
http://burro.astr.cwru.edu/stu/earth_moon.html