SOLAR SYSTEM VOCAB
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Geocentric
Earth centered outdated theory
Heliocentric
Sun centered
Solar eclipse
moon passes between sun and earth casting shadow on Moon.
Lunar eclipse
Earth passes between sun and moon casting shadow on earth Earth blocks light sunlight to Moon
Umbra
Darkest central part of shadow cast by Moon/Earth light is completely blocked
Penumbra
Lighter outer part of the shadow cast by the moon/Earth light source is partially covered
Asteriod
Small rocky bodies that orbit the sun
Comet
Space object that consist of nucleus and ice/dust
Aphelion
Point in object furthest from the sun
perihelion
A specific point in object orbit where is closest to the sun
Meteor
Small chucks of rocks produce light when a small piece of space debris enters Earth’s Atmosphere at high speed (SHOOTING STAR)
Meteoroid
Small rocky body travels through space
Meteorite
Piece of solid debris originates from space passes through Earth’s atmosphere and survives impact
Craters
bowl shape hole due to impact
Rotation
The spinning motion of a planet around its own axis
Revolution
yearly orbital journey a planet makes around the Sun
Jovian
The 4 outer planets
Terrestrial
Anything on land or planet
Kuiper Belt
Massive doughnut shape region of icy bodies, dwarf planets and comets.
Oort Cloud
Giant sphere shell surrounding our solar system (beyond the Kuiper belt)