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| the difference in the gravitational force is small between moon and earth, but it produces a noticeable deformation, a strettching along the line joining EArth to the Moon called a |
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| daily fluctuation in ocean level caused by the gravitational influence of the moon and the sun on earth |
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| the moon presents the same face toward the earth at all times |
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| the constant upwelling of warm air and the current downward flow of cooler air to take its place |
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| the partial trapping of solar radiation |
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| why does the moon not have an atmosphere? |
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| the moon has a lot less pulling power; its escape speed is small |
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| roughly circular dark areas on the moon that resemble earth's oceans; extensive flat plains that resultsed from the spread of lava earlier on |
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| light colored areas on the moon that resemble the continents; elevated several kilometers above the maria |
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| caused by impacting meteroids, found everywhere on the lunar surface |
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| metoritic impacts are the main source of ____on the moon. |
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| charged particles from the solar wind are trapped by earth's magentic field lines to form: |
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| particles from the van allen belts often escape from the magnetosphere nearth earth's north and south magnetic poles, where the field lines intersect the atmosphere and their collision with air molecules create the ____. |
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| what are the two types of aurora? |
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| aurora borealis (northern lights); aurora australis (southern lights) |
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| read about the formation of the moon p. 157-158 |
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| 2400 km radius (smallest planet) |
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| no atmosphere because of such high temperature |
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| intercrater plains; scarp (cliff); similar to the moon |
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| 243 (retrograde spin--opposite of earths) |
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| much more massive than the earth's; very hot |
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| major surface features of venus |
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| sheild volcanoes, coronae,craters; |
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| the largest volcanic structures on venus are huge, roughly circular regions known as ____. |
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| 180-270 kelvins (very cold) |
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| thin; composed of carbon dioxide |
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| major surface features of mars |
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| lwo lying northern volcanic plains with few craters and highly cratered southern highlands; tharsis bulge; hellas basin |
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| What is the biggest volcano in the solar system? |
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| olympus mons; it is big because there is not a lot of gravity on mars |
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| read about voyager missions |
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| rotation period of jupiter |
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| oval atmospheric blob called the Great Red Spot; lighter colored zones and belts; zones are regions of high pressure; belts are regions of low pressure; zonal flow |
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| rotation period of saturn |
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| the clouds composed of ammonia ice, ammonium hydrosulfide ice, water ice; three times the cloud thickness on jupiter |
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| sruface features of saturn |
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| bands, oval storm systems, turbulent flow patterns |
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| rotation period of uranus |
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| .69 solar days (retrograde motion) |
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| hydrogen, helium, and methane; |
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| rotation period of neptune |
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| rotation period of neptune |
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| has more methane than neptune that's why it looks more blue |
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| great dark spot-large storm; slightly warmer than uranus |
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| which planet has the strongest magnetic field? |
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