PPT Notes Jupiter Name: ________________________________ Date: _______________________ Jupiter and Saturn have no surfaces ________________ and most ________________ planet in the solar system: Contains almost ______ of all planetary matter in the ________________ ________________ Most striking features visible from Earth: ________________________________________________ Explored in detail by several space probes: ________________, ________________, ________________, ________________, ________________ Using Kepler’s third law MJupiter = ______ MEarth (Earth masses) From radius and mass Average density of Jupiter ≈ ________ g/cm3 Note: How is this value calculated from the radius and mass? ________________________________________________________________________________ Jupiter cannot be made mostly of rock, like ________________ planets. Jupiter consists mostly of _____________ and ____________. H2 = ___ %; He = ___ %. Jupiter is the most rapidly ________________ planet in the solar system: Rotation period slightly less than ________ ________________ forces stretch Jupiter into a markedly __________ shape. (“Egg shaped”) Magnetic field at least ________________ stronger than Earth’s magnetic field Magnetosphere over ________________ larger than Earth’s Extremely intense _______________ _________________ Very high energy ________________ can be trapped; radiation doses corresponding to ______________times lethal doses for humans! Jupiter’s axis of rotation = ______o. Just like on Earth, Jupiter’s ____________________produces ________________concentrated in rings around the magnetic ________________. ________________ times more powerful than aurorae on Earth. Jupiter’s liquid hydrogen ocean has no ________________: Gradual transition from ________________to ________________ phases as ________________ and ________________ combine to exceed the critical point. Only very thin ________________above cloud layers; transition to ________________ ________________ zone ____________________ below clouds Using the diagram in slide 17: What 3 compounds are found in the atmosphere from 30 to 100 km below the cloud tops? ________________ ________________________________ ________________ What are their respective Fahrenheit temperatures? ________________ ________________ ________________ What happens to the atmospheric temperature as you move farther toward the center of the planet? _____________________________________________________________________________________ Why? ________________________________________________________________________________ Dark belts and bright zones Zones ________________and ________________ than belts; ________________________________regions of rising gas Just like on Earth, high-and low-pressure zones are bounded by ________________-________________ ________________. Jupiter’s Cloud belt structure has remained ________________ since humans began mapping them. The Great Red Spot Several ________________and _____________spots mixed in with cloud structure. Largest and most prominent: The ________________________________________________ Has been visible for over ________________years Formed by rising ________carrying __________from below the clouds, creating a vast, rotating ___________ Jupiter’s Ring: ________________and ________________; only discovered by ________________spacecraft Composed of ________________particles of ________________material Not only Saturn, but ________________ gas giants have rings. ________________spacecraft image of Jupiter’s ring, illuminated from behind Rings must be constantly ________________ with new ________________. Ring material can’t be old because ________________________________and Jupiter’s ________________________________force dust particles to spiral down into the planet. Comet Impact on Jupiter: Impact of 21 fragments of comet ________________ in 1994 (SL = ShoemakerLevy). Impacts occurred just behind the horizon as seen from Earth, but came into view about 15 min. later. Impact sites appeared very ________________ in the ________________. Impacts released energies equivalent to a few ________________ of ________________ (Hiroshima bomb: ~ 0.15 megaton)! Visual: Impacts seen for many days as ________________ ________________ The History of Jupiter • Formed from cold ________________ in the outer solar ______________, where ________________ were able to condense • In the interior, hydrogen becomes ________________ (very good electrical ________________) • Rapid rotation strong ________________ field • Rapid rotation and large size belt-zone _________ pattern • ________________ from ________________ impacts onto inner moons trapped to form ________________ • Soon able to trap ______ directly through __________ • ________________ materials sink to the ________________ Jupiter’s Family of Moons • Over ___________________moons known now; new ones are still being discovered. • Four largest moons already discovered by ________________: The Galilean moons • ________________ • ________________ • ________________ • ________________ • Interesting and diverse individual geologies