Astronomy 2 Flashcards
altitude
HEIGHT in the sky
azimuth
DIRECTION around the earth in degrees (0-360) showing N,S,W,E
eclipse
blocking out of the sun or moon
solar eclipse
- the view of the sun is blocked when the moon is directly between the sun and Earth
lunar eclipse
blocking out of the moon when the moon passes through the earth’s shadow
total lunar eclipse
total blocking out of the moon when the moon passes through the UMBRA of the Earth’s shadow
moon
a natural satellite of a planet
Lunar
refers to moon
perigee
point of the moon’s orbit closest to earth
apogee
point of the moon’s obit farthest from Earth
Lunar phases
The apparent change in the shape of the Moon due to how much of the sunlit side is facing the Earth.
waxing
lighted area grows larger
waning
lighted area grows smaller
crescent
less than ½ of the lighted side of the moon is visible
quarter
½ of the lighted side of moon is visible