Science 30.3-4 Flashcards
What is the fifth planet from the sun?
Jupiter
What is the sixth planet from the sun?
Saturn
What is the seventh planet from the sun?
Uranus
What is the eight planet from the sun?
Neptune
What are round objects in orbit around the sun that are not satellites and that have not cleared the debris in their orbits?
Dwarf Planet
What is composed of dust and rock particles, frozen water, methane, and ammonia?
Comet
What is a rocky object formed from material similar to the material in planets composition?
Asteroid
What is a sand - to bolder-sized objects in the solar system?
Meteoroid
What is a distant planetoid?
Sedna
What is life beyond Earth known as?
Extraterrestrial life
Which space probes flew past Jupiter in 1979?
Voyager 1 and Voyager 2
Which space probes reached Jupiter in 1995?
Galileo
What did the Voyager probes and Galileo study?
They studied the composition, structure, and motion of Jupiter’s atmosphere
How many known moons does Jupiter have?
63
What are the 4 Galilean moons?
Ganymede, Callisto, Io, and Europa
Which of the Galilean moons is the largest in the solar system?
Ganymede
Which of the Galilean moons most likely have water trapped beneath their surface?
Ganymede, Callisto, Europa
Which of the Galilean moons is the most volcanically active object in the solar system?
Io
What is Saturn’s most commonly known feature?
It’s rings
What are Saturn’s rings made 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?
To collect data about Saturn, it’s rings and it’s moons
What was the Huygens mission?
To examine 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’s axis tilt?
To where it is nearly parallel to the plane of the planet’s orbit
What color is Uranus?
Blue-green
Which space probe is the only probe to reach Neptune?
Voyager 2
What makes Neptune a bluer color than Uranus?
The percentage of methane in it’s atmosphere
How many moons does Neptune have?
13
What is Neptune’s largest moon?
Triton
What are the names of 3 Dwarf planets?
Pluto, Eris and Ceres
What is the bright cloud around a comet?
Coma
Where do comets originate?
Kuiper Belt, which is beyond Neptune’s orbit
When meteoroids enter Earth’s atmosphere, what are they called?
Meteors
When a meteor strikes Earth’s surface, what are they called?
Meteorites
What does AU stand for?
Astronomical Unit
What is an AU equal?
150 million km
