Unit 2 cont'd Worksheet

The longest day of the year
rotation takes the same amount of time as revolution
Day and night are of equal lengths and days are getting shorter
The shortest day of the year
a gradual wobble that alters the orientation of Earth’s axis in space
Means “equal night” in Latin
the change in the illuminated area of one celestial body as seen from another celestial body
Day and night are of equal lengths and days are getting longer
size of the moon increases
size of the moon decreases
Means “stationary sun” in Latin
an event in which one astronomical object casts a shadow on another
an event that occurs when the Moon passes through Earth’s shadow, which can only occur at full moon
deepest part of the shadow where sunlight is completely blocked
lighter part of the shadow where sunlight is only partially blocked
the two points in the Moon’s orbit in which it lines up with Earth’s orbit
the Sun, Earth, and Moon are perfectly aligned, and the Moon passes through Earth’s umbra
the Sun, Earth, and Moon are not perfectly aligned and the Moon passes through Earth’s penumbra
occurs when the moon becomes completely immersed in the penumbral cone of the Earth without touching the umbra
a solar eclipse during which the Sun becomes fully blocked by the disk of the Moon
the portion of a total lunar eclipse during which the Moon is full within Earth’s umbra, or during a total solar eclipse during which the Sun’s disk is fully blocked the Moon
a solar eclipse during which the Moon is directly in front of the Sun but its size in the sky is not large enough to completely block the Sun
a solar eclipse during which the Sun becomes only partially blocked by the disk of the Moon
eclipse that occurs when the Moon passes between the Sun and Earth, and when the Moon fully or partially blocks the Sun