Astronomy – Space Cards – Flashcards
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saturn has an average density of
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.7 times that of water
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saturns atmosphere is made up of mostly?
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most hydrogen, helium, methane, and ammonia
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does saturn have a stronger or weaker magnetic field than jupiter
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weaker
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true or false: saturn radiates more energy than it receives from the sun
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true
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why does saturn radiate even more excess energy than jupiter?
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helium rain gives off heat as it differentiates towards saturn's center
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saturn is how man AU's away from our sun?
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10
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What is the composition of saturn's rings?
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Water ice
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What is the roche limit
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The critical distance from a planet, inside of which a moon can be tidally destroyed
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The rings of saturn are most likely young or old compared to the life of saturn and our solar system?
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young
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What color is uranus?
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teal
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which satellite in the solar system shows an atmosphere denser than earth?
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titan - saturn's moon
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what color is neptune?
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blue
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who founded uranus?
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William Herschell
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Who discovered neptune
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Galle
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Who predicted the position of neptune based on its effects of uranus?
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Adams and Leverrier
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How much larger are uranus and neptune compared to earth?
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4x the size of earth
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what gas absorbs the color red
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methane
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what substance is responsible for the colors on neptune and uranus?
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methane
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what planets have a substantial magnetic field but at large angles to their rotation axes
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uranus and neptune
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what planet has almost the same surface gravity as earth?
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uranus
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True or false?: the magnetic fields of uranus and neptune are stronger in magnitude than that of jupiter
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false
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how much larger is jupiter's orbit compared to earth's orbit?
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5x larger
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compared with earths density the density of jupiter is
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much less
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the main constituent of jupiters atmosphere is
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hydrogen
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jupiters rocky core is
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larger than earth
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jupiter magnetosphere extends far into space. How far?
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5 AU
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the galilean moons of jupiter are sometimes described as a miniature inner solar system because
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the moons densities decrease with the increasing distance from jupiter
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when is the next time saturns rings will appear roughly edge-on as seen from earth?
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2025
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compared with the time it takes jupiter to orbit the sun once, the time it takes saturn
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significantly more than twice as long
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saturns cloud layers are much thicker than those of jupiter because saturn has
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weaker surface gravity
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a moon placed at a planets roche limit will
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break into smaller pieces
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a tidally locked moon of saturn will
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always present the same face to the planet
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the moons telesto and calypso
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always stay the same distance apart
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the discovery of new planets requires
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the patient use of growing technology
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compared to uranus, the size of neptune is
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about the same
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the five largest moons of uranus
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all orbit directly above the planets equator
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a gas giant planet orbiting a distant star would be expected to have
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hydrogen in its atmosphere
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the solar system object most similar to neptune is
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uranus
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if uranus were moving more rapidly relative to earth, uranus's rings would appear
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more compressed horizontally
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all of the largest jovian planets tend to have
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a magnetic field axes most closely aligned with their axes of rotation
