Earth & Moon
Recognized by Early Greeks
Only occur during a new or full moon
Conditions usually will happen four times a
Once a set of lunar or solar eclipses
occurs, the next set will occur six months
Lunar Eclipse DVD Clip
Total Lunar Eclipse
Occurs during a “full moon” phase
Earth’s circular shadow moves slowly across
the disk of the full moon
When eclipsed, moon is completely within
Earth’s shadow and appears as a copper
Can last up to four hours and is visible to
people facing the moon.
Solar Eclipse DVD Clip
Total Solar Eclipse
Occurs during a “new moon” phase
Moon will slowly block the sun from view and
the sky gets dark.
Temperature will drop several degrees.
Sun is blocked for a minimum of seven
minutes and ONLY sun’s corona is visible.
Dangerous to look directly at!!!
Parts of an Eclipse
Umbra – central, completely dark part of
Penumbra – portion of a shadow from
which only part of the light source is