Earth, Sun, and Moonπππππππππππ Flashcards
A natural or artificial body that orbits a planet.
Satellite
Earthβs only natural satellite βLunaβ
- Diameter=_______
- Mass=________
- Gravity=________
Moon
- 1/4 of Earthβs
- 1% of Earthβs Mass
- 1% of Earthβs 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. βSeaβ
Mare
Deep channels of cracked crust running through moonβs 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 Earthβs shadow.
-1 cycle of them=_______
Phases
-29.5 days
Phase where moon is between Earth and Sun and so cannot be seen.π
New Moon
Phase where moon is on opposite side of Earth from Sun and so is a full circle. π
Full Moon
Phase where moon is at right angle to Earth and Sun.ππ
Quarter Moon
Phase Where moon is between New Moon and Quarter Moon Phases and only a small sliver can be seen.ππ
Crescent Moon
Phase where moon is between Full Moon and Quarter Moon Phases so 2/3 of moon can be seen.ππ
Gibbous Moon
All phases of the moon where the visible portion of the moon is growing.πππππ
Waxing