30.3 / 30.4 Flashcards
fifth planet from the sun
Jupiter
sixth planet from the sun
Saturn
seventh planet from the sun
Uranus
the eighth planet from the sun
Neptune
nearly round objects in orbit around the sun that are not satellites and that have not cleared the debris in the orbit
dwarf planets
rocky objects formed from material similar to the material in planets’ composition
asteroid
composed of dust and rock particles, frozen water, methane, and ammonia
comet
sand- to boulder- sized objects in the solar system
meteoroids
has been labeled a distant planetoid
sedna
life beyond earth
extraterrestrial life
Which space probes flew past Jupiter in 1979?
Voyager 1 & Voyager 2
Which space probe reached Jupiter in 1995?
Galileo
What did the Voyager proves and Galileo study?
Composition, structure, and motion of Jupiter’s atmosphere and many features of its moons.
How many known moons does Jupiter have?
63
What are the 4 Galilean moons?
Ganymede, Callisto, IO, Europa,
Which of the Galilean moons is the largest in the solar system?
Ganymede
Which of the Galilean moons have water trapped beneath their surface?
Europa, Ganymede, Callisto
Which of the Galilean moons is the most volcanically active object in the solar system?
IO
What is Saturn’s most commonly known feature?
Its rings
What are Saturn’s rings made out of?
Particles of water ice
How many moons does Saturn have at least
60
What is the name of Saturn’s largest moon?
Titan
What is the name of the spacecraft that approached Saturn in 2004?
Cassini, Huygens
What was Cassini’s mission?
It collected data about Saturn, its rings, and its many moons
What was the Huygens mission?
Went to Titan’s surface
Which space probe is the only probe to study Uranus?
Voyager 2
How many moons does Uranus have?
27
Does Uranus have moons?
yes
How is Uranus’ axis tilt?
Parallel to its plane
What color is Uranus?
Blue-green
Which space probe is the only to reach Neptune?
Voyager 2
What makes Neptune a bluer color than Uranus?
Methane
How many moons does Neptune have?
13
What is Neptune’s largest moon?
Triton
What are the names of 3 dwarf planets?
Pluto, Eris, Ceres
What is the bright cloud of a comet called?
coma
Where do comets originate?
Kuiper belt or the Oort Cloud
When meteoroids enter the Earth’s atmosphere, what are they called?
meteor or shooting star
When a meteor strikes Earth’s surface, what are they called?
Meteorites
What does AU stand for?
Astronomical Unit
What is AU equal?
150 million kilometers