Earth, Sun, and Moon🌑🌓🌔🌕🌙🌒🌖🌗🌘🌚🌜 Flashcards
A natural or artificial body that orbits a planet.
Satellite
Earth’s only natural satellite “Luna”
- Diameter=_______
- Mass=________
- Gravity=________
Moon
- 1/4 of Earth’s
- 1% of Earth’s Mass
- 1% of Earth’s Gravity
A loose layer of fine rock and dust covering moon from meteorite impacts.
Lunar Regolith
Circular impact areas caused by numerous meteorite strikes.
Craters
Dark regions of lowland plain of hardened lava. “Sea”
Mare
Deep channels of cracked crust running through moon’s maria.
Rilles
Point in which the orbit of a body is farthest from one of its foci(Earth).
-_______km away from Earth
Apogee
-406,000
Point in which the orbit of a body is closest to one of its foci(Earth).
-_______km
Perigee
-365,000
Visible shapes of the moon caused by reflected light and Earth’s shadow.
-1 cycle of them=_______
Phases
-29.5 days
Phase where moon is between Earth and Sun and so cannot be seen.🌑
New Moon
Phase where moon is on opposite side of Earth from Sun and so is a full circle. 🌕
Full Moon
Phase where moon is at right angle to Earth and Sun.🌓🌗
Quarter Moon
Phase Where moon is between New Moon and Quarter Moon Phases and only a small sliver can be seen.🌒🌘
Crescent Moon
Phase where moon is between Full Moon and Quarter Moon Phases so 2/3 of moon can be seen.🌔🌖
Gibbous Moon
All phases of the moon where the visible portion of the moon is growing.🌑🌒🌓🌔🌔
Waxing
All phases of moon where the visible portion is shrinking. 🌕🌖🌗🌘
Waning
The casting of a shadow of one celestial body on the surface of another.
Eclipse
The casting of the moon’s shadow on the surface of the Earth.
Solar Eclipse
The dark central portion of the shadow which completely blocks out the sun’s light.
Umbra
An area of partially blocked light surrounding the umbra.
penumbra
A Solar Eclipse during which the outer ring of the sun is visible around the moon.
Annular Eclipse
The casting of earth’s shadow on the surface of the Moon.
- Last ____ _____ because of size of Earth’s shadow.
- Fewer of these than _____ _____ , but more people experience these.
Lunar Eclipse
- Several, Hours
- Solar Eclipse
