Astronomy Quiz 12

The core of Jupiter is A) About the same size as Earth B) About the same mass as Earth C) About the same composition as Earth D) A and B E) All of these

About the same size as Earth

What causes the white bands we see on Jupiter? A) Formation of ammonia clouds in regions of rising air B) Formation of water clouds in regions of rising air C) Snow on mountain peaks D) Gaps in ammonium hydrosulfide clouds revealing ammonia clouds below E) Gaps in ammonium hydrosulfide clouds revealing water clouds below

Formation of ammonia clouds in regions of rising air

What is the largest moon in the solar system? A) Europa B) Triton C) Io D) Ganymede E) Titan

Ganymede

Why are some small jovian planet moons geologically active? A) All of these B) They have large amounts of radioactive materials C) Ice able to deform at lower temperatures than rock D) Impact cratering melted the interior

Ice is able to deform at lower temperatures than rock

Which of the Jovian planets has no seasons? A) Saturn B) Neptune C) Jupiter D) All of the Jovian planets have seasons E) Uranus

Jupiter

Which planet has the most large moons? A) Neptune B) Uranus C) Saturn D) Jupiter

Jupiter

The interior of which jovian planet is heated to helium rain? A) All of these B) Saturn C) Jupiter D) Uranus E) Neptune

Saturn

Tidal heating on Io causes A) Geysers of water at its south pole B) Tectonic surface features C) A subsurface water ocean D) Sulfur volcanoes

Sulfur volcanoes

Why don't ring particles form a moon? A) They collide too violently to accrete into a moon B) Their masses are too small for them to accrete C) They collide too infrequently to make a moon D) Tidal forces from the planet prevent them from accreting E) Tidal forces from moons prevent them from accreting

Tidal forces from the planet prevent them from accreting

What causes waves in Saturn's Rings? A) Impacts into the rings B) Variations in the composition of the ring particles C) Impacts from charged particles in the magnetosphere D) Eruptions from nearby moons E) Orbital resonances from nearby moons

orbital resonances from nearby moons

What is unusual about Triton? A) It has a backwards orbit B) It has a large axis tilt C) It has volcanic activity D) It has rivers and lakes

It has a backwards orbit

What is the liquid in Titan's rivers and lakes? A) Sulfur B) Water C) Methane and Ethane D) Sulfur and ammonia

Methane and ethane

Why are methane clouds not seen on Jupiter and Saturn? A) At our viewing angle, the methane clouds on Jupiter and Saturn are transparent B) Jupiter and Saturn do not have enough methane to make clouds C) Jupiter and Saturn are rotating too quickly for their methane clouds to be visible to us D) Methane clouds are seen on Jupiter and Saturn E) Jupiter and Saturn have sulfur compounds that combine with all their methane to make reddish methane-sulfide clouds F) The atmosphere of Jupiter and Saturn are too warm for methane clouds to form G) Because of their relatively warmer temperatures, Jupiter and Saturn have clouds of water that obscure our view of their methane clouds

The atmosphere of Jupiter and Saturn are too warm for methane clouds to form.

How are the Jovian planets affected by their rotation? A) Their rapid rotation caused the lighter elements hydrogen and helium to flung out their outer layers and denser hydrogen compounds to settle in their cores B) Their rapid rotation causes the planets to be slightly flattened, larger across the equator than pole-to-pole C) Their rapid rotation causes a build up of hydrogen and helium near the equator and hydrogen compounds near the cores D) Their rapid rotation causes the planets to be stretched, larger pole to pole than across the equator

Their rapid rotation causes the planets to be slightly flattened, larger across the equator than pole-to-pole

How does the composition of Uranus and Neptune compare to the composition of Jupiter and Saturn? A) Uranus and Neptune are mostly hydrogen compounds while Jupiter and Saturn are mostly Helium B) Uranus and Neptune are mostly rocky while Jupiter and Saturn are mostly hydrogen and helium C) Uranus and Neptune are mostly hydrogen and helium while Jupiter and Saturn are mostly hydrogen compounds D) Uranus and Neptune have compositions very similar to Jupiter and Saturn E) Uranus and Neptune are mostly hydrogen compounds while Jupiter and Saturn are mostly rocky

Uranus and Neptune are mostly hydrogen compounds while Jupiter and Saturn are mostly Helium

Io, Europa, and Ganymede have tidal heating because A) They are the most closest moons to Jupiter B) They are the largest moons in the solar system C) An orbital resonance keeps their orbit elliptical D) an orbital resonance causes the moons to exert tidal forces on each other

an orbital resonance keeps their orbit elliptical

Where is Neptune's magnetic field generated? A) In a liquid metallic core B) In an ocean of hydrogen and helium C) In an ocean of hydrogen compound, rocks, and metals D) In a layer of metallic hydrogen

in an ocean of hydrogen compound, rocks, and metals

Which of the following is not a similarity between all jovian planet ring systems? A) They are all on nearly circular orbits B) They are all made of bright icy particles C) They all have features shaped by moons and resonances D) They are all on nearly equatorial orbits

they are all made of bright icy particles