Chapter 12: Rings, Moons, and Pluto

Describe Saturn's moon, Enceledus.

"tiger stripes" many geysers (water) 500 km in diameter

How many moons does Jupiter have?

95 moons 4 reflect sunlight

Who tracked the position of Jupiter's four biggest moons to learn about their orbital motion in the early 1600's?

Galileo

Describe Jupiter's moon, Io.

Volcanic sulfur snow, sulfur dioxide fresh hot lava

Pluto's big satellite is called a. Charon b. Titan c. Ganymede d. Christy e. Tombaugh

a. Charon

The satellite whose surface is characterized by a smooth icy crust with a complex network of cracks is: a. Europa b. Callisto c. Triton d. Io e. Ganymede

a. Europa

The largest satellite (moon) in the solar system is:

a. Ganymede

The four large moons of Jupiter were first discovered by: a. ancient people, seeing Jupiter in dark, cloudless skies b. Galileo with his early telescope c. Isaac Newton with his improved telescope d. William Herschel, in the 18th century e. the Voyager spacecraft

b. Galileo with his early telescope

The world in the solar system that is most active volcanically is: a. Earth b. Neptune c. Io d. Mars e. Ganymede

c. Io

The lakes found in the north polar region of Titan are filled with liquid a. water b. ammonia c. methane d. nitrogen e. you can't fool me, all the lakes on cold Titan are frozen solid; none are liquid

c. methane

What method was used to discover Pluto in 1929-1930? a. look at irregularities (wobbles) in the motions of Uranus and Neptune b. use one of the first radio telescopes to measure cold radio waves from Pluto c. look for patterns in the orbits of the moons of Neptune to see in which direction Pluto would have escaped d. take pairs of photos several days apart and "blink" them e. you can't fool me; Pluto was discovered by Galileo through one of his first telescopes

d. take pairs of photos several days apart and "blink" them

The moon Triton orbits which of the planets? a. Mars b. Jupiter c. Saturn d. Uranus e. Neptune

e. Neptune

The spacecraft that visited Pluto and send back our first images: a. was called New Horizons b. got a gravity boost from Jupiter to get it to Pluto faster c. used plutonium to keep it warm d. is returning to Earth in the 22nd century e. more than one of the above

e. more than one of the above

Which of the Gas Giant planets does NOT have any satellites? Jupiter Saturn Uranus Neptune you can't fool me, all the jovian planets are accompanied by satellites

e. you can't fool me, all the jovian planets are accompanied by satellites

Describe Jupiter's moon, Ganymede.

largest moon in solar system rocky and dry

Describe Jupiter's moon, Callisto.

mostly ice ice spikes

Why is Pluto considered a dwarf planet?

not large enough tote a planet

Describe Saturn's moon, Titan.

second largest moon reddish boulders composed of water ice liquid lakes, methane and ethane hydrocarbons

Describe Jupiter's moon, Europa.

shell of ice covered in cracks and streaks with an ocean beneath ice

What are Saturn's rings mostly made of?

water ice