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| Mercury, Venus, Mars, Jupiter, Saturn |
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| 5 planets we can see with the unaided eye... |
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| 1.4 million km (100x the diameter of earth) |
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| over 300,000x the mass of earth |
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| the sun takes up __% of the total mass of the solar system |
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| the 9 planets, their moons, meteroids, asteroids, comets, gas, dust, etc. |
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| make up most of the remaining 1% of the total mass of the solar system |
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| Mercury's orbit is ___ Earth days long. |
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| Mercury's distance from the sun |
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| ___ natural satellites that we currently know of |
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| Moon's distance from earth |
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| large dark patches on moon (seas of lava that flowed out of Moon's interior, filled impact craters and cooled to solid rock) |
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| moon's orbit length around earth ____days |
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| Astronomical unit (AU) is ___ km |
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| Venus's distance from the sun |
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| Venus orbit length __ years |
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1. very hot
2. sulfuric acid
3. atmospheric pressure too great. |
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| Venus cant support life b/c... (3) |
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| 78% N, 21% O, 1% CO2 and other gases. |
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| Earth's atmosphere is made up of... |
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| Mars distance from the sun |
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| Mars orbit length in years |
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| largest volcano in solar system |
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| Jupiter large enough to hold ___ earths |
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| Jupiter's atmosphere consists of... |
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| Uranus and neptune's atmospheres consist of... |
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| who said everything revolved around earth and who explained it? |
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| who said earth wasnt at center? |
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| who said the orbits around the sun were elliptical? |
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| who explained the force holding orbits? |
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| metallic, stony, stony-iron |
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| lightyear-- 9.5 trillion km |
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| distance that light travels in 1 year. |
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| over 1 billion times the pressure on earth |
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| pressure at core of star... |
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| energy moves thru star with... |
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| once light leaves star moves at speed of... |
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| reveal composition of stars |
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| 71% H, 27% He, 2% other elements |
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| nearly ___% of stars in the milkyway are in midlife |
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