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Flashcards - The Solar System: Layout, Formation & Dating

Flashcards - The Solar System: Layout, Formation & Dating
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terrestrial planets
A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals
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meteoroid
A meteoroid is a small rocky or metallic body in outer space
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asteroid
Asteroids are minor planets, especially those of the inner Solar System
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Uranus
Uranus is the seventh planet from the Sun
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half-life
Half-life is the time required for a quantity to reduce to half its initial value
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comet
A comet is an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail
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comet
A comet is an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail
half-life
Half-life is the time required for a quantity to reduce to half its initial value
Uranus
Uranus is the seventh planet from the Sun
asteroid
Asteroids are minor planets, especially those of the inner Solar System
meteoroid
A meteoroid is a small rocky or metallic body in outer space
terrestrial planets
A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals
solar nebula theory
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System
solar system
The Solar System is the gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly
protoplanet
A protoplanet is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior
planetesimal
Planetesimals /plænᵻˈtɛsᵻməlz/ are solid objects thought to exist in protoplanetary disks and in debris disks
blackbody
A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence
Sun
The Sun is the star at the center of the Solar System

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