recap of earth-moon comparison. earth 6400 kilometer radius 23 degree axis tilt (seasons!) surface...
DESCRIPTION
Earth Active volcanoes - chains Earthquakes - chains Mountain chains Active magnetic field Few craters Geologically Active! Moon NO active volcanoes Few moonquakes NO mountain chains NO active magnetic field Buckets of craters Geologically Inactive!TRANSCRIPT
Earth
6400 kilometer radius23 degree axis tilt
(seasons!)Surface temps –73 to 48 C
(-100 to 120F)Thick atmosphere, mild
greenhouse effect Liquid water – lots! - at
surface
1738 kilometer radius7 degree axis tiltSurface temps - 107 C to
–153 C (224 F to –243 F)
No atmosphere
No liquid water
Moon
Earth
Active volcanoes - chains
Earthquakes - chainsMountain chainsActive magnetic fieldFew craters
Geologically Active!
Moon
NO active volcanoesFew moonquakesNO mountain chainsNO active magnetic
fieldBuckets of craters
Geologically Inactive!
Phases of the Moon!
• Revolve
• Orbit
• Rotate
• Axis
Earth-Moon Vocabulary
Moon Vocabulary• Waxing- To show a progressively larger illuminated area
from new moon to full moon. Lighted side is getting BIGGER and on the RIGHT!
• Waning- To show a progressively smaller illuminated area from full moon to new moon. Lighted side is getting SMALLER and on the LEFT!
• Gibbous- More than half but less than fully illuminated. Means “hump”.
• Crescent- The figure of the moon as it appears in its first or last quarter, with concave and convex edges terminating in points. Means “curved”.
Eclipse- Occurs when one object passes through the shadow of another. Means
“outshine or surpass”.
• Lunar Eclipse- The full moon passes through Earth’s shadow and appears eclipsed, or shaded. It may also look red. A total Lunar Eclipse lasts more than 2 hours. The Earth is between the Moon and the Sun.
• Solar Eclipse- Earth passes through the shadow of the moon, and the sun appears hidden behind the moon. A total Solar Eclipse lasts no more than 7.5 minutes. The moon is between the Earth and the Sun.
Eclipses
• Only 7 eclipses occur in a single year.–2 Lunar–5 Solar
November 1, 2004Waning Gibbous
November 2, 2004 Waning Gibbous
November 3, 2004 Waning Gibbous
November 4, 2004Third or Last Quarter
November 5, 2004 Third or Last Quarter
November 6, 2004Waning Crescent
November 7, 2004 Waning Crescent
November 8, 2004 Waning Crescent
November 9, 2004 Waning Crescent
November 10, 2004 Waning Crescent
November 11, 2004 Waning Crescent
November 12, 2004New Moon
November 13, 2004 Waxing Crescent
November 14, 2004 Waxing Crescent
November 15, 2004 Waxing Crescent
November 16, 2004 Waxing Crescent
November 17, 2004 Waxing Crescent
November 18, 2004First Quarter
November 19, 2004Waxing Gibbous
November 20, 2004 Waxing Gibbous
November 21, 2004 Waxing Gibbous
November 22, 2004 Waxing Gibbous
November 23, 2004 Waxing Gibbous
November 24, 2004 Waxing Gibbous
November 25, 2004 Waxing Gibbous
November 26, 2004 Waxing Gibbous
November 27, 2004Full Moon
November 28, 2004 Waning Gibbous
November 29, 2004 Waning Gibbous
November 30, 2004 Waning Gibbous
