The Sun and Solar System Study Guide
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29 terms
Terms | Definitions |
|---|---|
 it takes ____ mins. for light from the sun to reach Earth | 8 |
| the temperature in the core of sun is hotter or cooler than at the surface | hotter |
| the part of sun that gives its yellow color is | photosphere |
| difference between solar flares and soloar prominence | solar flares: comback, solar prominence: loop |
| define solar wind and what does it cause | electric charged particles out into space; auroras |
| the sun is made of two main gases | hydrogen and helium; produces energy by nuclear fusion |
| name the planets in order | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune |
| the orbits of planets are shapes as an | ecllipse |
| retrograde orbits move | westward; clockwise |
| two planets that have retrograde orbits are | Venus and Uranus |
| prograde orbits move | eastward; counterclockwise |
| Earth-centered model of solar system | geocentris |
| Sun-center model of solar system is | heliocentric |
| terrestrial planets: | Mercury, Venus, Earth, and Mars |
| 2 characteristics of terrestrial planets | rockycrust and made of Si, O2, Fe, no rings |
| terrestrial planets have a density _____ than 1 | greater |
| the 4 gas giants | Jupiter, Saturn, Uranus, and Neptune |
| 2 characteristics of gas giants | huge gaseous w/ rockycore and H & He, rings, satellites |
| jovian (gas giants) planets have a density ____ than 1 | less |
| evening star and morning star planet | Venus |
| great red spot planet | Jupiter |
| valles marineris planet | Mars |
| 90 degree tilt of its axis planet | Uranus |
| Earth's satellite | Moon |
| Jupiter's main satellites | Galilean, Io, Europa, Ganymear, and Callisto |
| Neptune's main satellites | Triton and Nereid |
| Pluto's main satellite | Charon |
| asteroid belt between planets | Mars & Jupiter |
| small rocky fragments traveling in space | meteoroids; meteor traveling through atmosphere; meteorite when it hits Earth |
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