astronomy ch 11

what are the main facts about the galileo probe that dropped into jupiter

- it was the first spacecraft to enter the atmosphere of a jovian planet - it sen =t back information for a little less than an hour - it was slowed by the stmosphere friction and parachute - it found that the temp and pressure increased as it got further down

how does jupiter differ from terrestrial planets

- its average density is lower - it is farther away from the sun - it includes much more gas and liquid - it is larger in diameter

list the periods of revolution ( the year ) of the jovian planets ( approximently )

- jupiter 12 yrs - staurn 30 yrs - uranus 84 yrs - neptune 165 yrs

list the periods of rotation ( the day ) of the jovian planet ( approximatly )

- jupiter10 hr - saturn 11 hrs - uranus 17.5 hrs - neptune 16 hr

what spacecraft are leaving the solar system

- pioneer 10 - pioneer 11 - voyager 1 - voyager 2

how do the Jovian planets differ from the terrestrial planets

- the jovians are larger - the jovians are made mostly of liquid gas - the jovians are typically colder and further from the sun - the jovians have rings while the terrestrials do not

list the basic facts about the red spot of jupiter is

- variable in size - a high pressure storm system ( anticyclone ) - made of reddish colored material - observed since the 1600s

how many earths can uranus make out of its mass? neptune ?

14.5/17

what and in that phase are the primary clouds in the atmospheres opf jupiter and saturn mad eof

froxen ammonia crystals

what was the first spacecraft which did not fly by the jovian planet, but went into orbit around it for an extended period of time

galileo

what was the most abudant element in the giant ( jovian) planets

helium

what is the origin of the sychrotron radiation ( radio waves ) from jupiter

high speed electronds rotating along spirals that go around the lines of the strong magnetic feild of the planet

what are the basic 2 facts about jupiters magnetosphere

it fully covers the inner satelights of jupiter and one of the largest structures in the solar system

which of the following characteristics distinguishes uranus from every other planet in our solar system

it rotates on its axis titled about 90 degrees to the plane of its orbit

what was a big problem with the galieo spaccraft

its main antena is stuck in a closed position

what is the heaviest planet in the solar system

jupiter

what are the centers of all jovian planets mad eof and in whayt phase

liquid nitrogen and helium

what is the fundemental way to measure the rotaion of jupiter

measure the changes in the planets radio waves, which are controlled by its magnetic feild

what is the element that is responsible for jupiter and saturn magnetism

metallic hydrogen

what are the upper clouds in the stmosphere of neptune made of

methane

what jovian planet has the longest yeae

neptune

which jovian plaet have the fastest wind at its equator

neptune

are there seasons on jupiter

no, jupiters axis is hardly tilted so it has no real seasonal variations

what is the first spacecraft to explore the environment of the planet jupiter called

pioneer

to obtain the images of the jovian planets what did the voyager spacecraft cameras have to do as they flew by eachworld

swivel the cameras backward to keep pointing in the same dirction as the craft flew by

what allowedthe voyager 2 spacecraft to make a tour of all four of the jovian planets in the late 1970s and 1980s

the four planets were approximently aligned on one side of the sun and we used the gravity of each planet to speed up the spacecraft to get to the next one in its path

what was a surprise to astronomers when they examined neptune with the hubble space telescope in 1994

the great dark spot had dispeared

what is the origin of the bluish color of the atmosphere of neptune

the interaction of sunloght with methane

whys is there a system of storms in jupiter atmospher e

the planet rotates rapidly

at the moment when the voyager spacecrat got closest to uranus, the sun was shining dirctly on the plantes south pole, uranus takes about 17 hours to rotate once on its axis, if voyager took a photo of the south pole 8.5 hours later, what would it observe

the same

what does the composition of jupiter resembe

the sun

what do the magnetic feilds of jupiter, uranus, and neptune have in common

they have thier magnetic axes offset from the center of the pkanet

whose planets rotational axis is perpendicular to the plane of its orbit

uranus

with what spacecraft have astronomers studied the jovian planets and their satellites

voyager

based spectra studies , ther is less heluin in the upper atmosphere of saturn that expected . does it also mean that saturn is warmer than expected

yes