WASHINGTON — An image from the international Cassini spacecraft provides evidence of rainfall on the north pole of Titan, the largest of Saturn’s moons.
Which most accurately explains why fiat money differs from commodity money quizlet? which statement accurately describes the relationship between commodity money and fiat money?.


Which moon shows evidence of rainfall and erosion by a liquid?

Titan is the largest moon of Saturn and the second-largest natural satellite in the Solar System. It is the only moon known to have a dense atmosphere, and the only known moon or planet other than Earth on which clear evidence of stable bodies of surface liquid has been found.

Which moon shows strong evidence of global liquid ocean water?

Based on Europa’s icy composition, scientists think the most likely material to create this magnetic signature is a global ocean of salty water, and this magnetic field result is still the best evidence we have for the existence of an ocean on Europa.

Which statement about Jupiter's moon lo is true?

Which statement about Jupiter’s moon Io is true? It is the most volcanically active body in our solar system. What is tidal heating?

Which moon is considered likely to have a deep subsurface ocean of liquid water?

In 2015, NASA confirmed that liquid water flows intermittently on present-day Mars. Also in 2015, scientists used data from NASA’s Cassini mission to discover that a global ocean lies beneath the icy crust of Saturn’s moon Enceladus. Scientists believe that Jupiter’s moon Europa has a subsurface ocean as well.

Which moon is known to be volcanically active?

Jupiter’s rocky moon Io is the most volcanically active world in the solar system, with hundreds of volcanoes, some erupting lava fountains dozens of miles (or kilometers) high.

Which planet may have helium rain in its interior and what does this rain do?

Which planet may have helium rain in its interior, and what does this rain do? Saturn, where it generates heat as it falls downward. Models suggest that this helium rain may explain Saturn’s internal heating.

Does Titan Moon have water?

It is the sole other place in the solar system known to have an earthlike cycle of liquids raining from clouds, flowing across its surface, filling lakes and seas, and evaporating back into the sky (akin to Earth’s water cycle). Titan is also thought to have a subsurface ocean of water.

What is special about Neptune's moon Triton?

Overview. Triton is the largest of Neptune’s 13 moons. It is unusual because it is the only large moon in our solar system that orbits in the opposite direction of its planet’s rotation―a retrograde orbit. … Like our own moon, Triton is locked in synchronous rotation with Neptune―one side faces the planet at all times.

Is Jupiter's moon Europa habitable?

‘Europa is one of the best candidates for habitability because the liquid water is in direct contact with the silicate mantle. ‘ Another important factor regarding the habitability of the moons is how much radiation from Jupiter is hitting them.

Why does Jupiter have 67 moons?

Not only is Jupiter the largest planet in the solar system, it is also the most massive at more than 300 times the mass of Earth. Its size plays a role in the number of moons orbiting Jupiter because there is a large area of gravitational stability around it to support many moons.

What is unusual about Jupiter's moon Io?

what is unusual about Jupiter’s moon Io? It’s the only other volcanically active body in the solar system (besides Earth) because of the extreme tidal forces from it’s close proximity to Jupiter. 3. … what is the evidence for geological activity on Saturn’s midsized moons?

How old is Io?

Age: Io is about 4.5 billion years old, about the same age as Jupiter. Distance from Jupiter: Io is the fifth moon from Jupiter. Its average orbital distance is about 262,000 miles (422,000 km). Io takes 1.77 Earth-days to orbit Jupiter.

What is the origin of the Jovian moons?

Origin and evolution Jupiter’s regular satellites are believed to have formed from a circumplanetary disk, a ring of accreting gas and solid debris analogous to a protoplanetary disk. They may be the remnants of a score of Galilean-mass satellites that formed early in Jupiter’s history.

Is there life on Jupiter's moon?

Robots may have to dig relatively deep on Jupiter’s icy moon Europa to have a shot of finding signs of life, a new study suggests. Scientists think Europa harbors a huge ocean of liquid water beneath its icy shell. … As a result, Europa is generally regarded as one of the solar system’s best bets to harbor alien life.

Can we live on Jupiter's moons?

Living on the surface of Jupiter itself would be difficult, but maybe not impossible. … However, another moon of Jupiter — Europa — is thought to have a vast water ocean beneath its icy surface, and is considered the best place to find life in our solar system.

Is Olympus Mons active dormant or extinct?

The tallest mountain on any of the Solar System’s planets is Olympus Mons, a giant extinct volcano on Mars that is some 14 miles (or 21.9 kilometers) high. That’s about two and a half times the height of Mount Everest.

Is Ganymede volcanically active?

The names Marius proposed for the moons in 1614 (suggested to him by a fellow astronomer, Johannes Kepler) are the ones we use today — Io, Europa, Ganymede, and Callisto. Io is the most volcanically active body in the solar system. Its surface is covered by sulfur and lava in many colorful forms.

Why is Io more volcanically active than our moon?

Why is Io more volcanically active than our moon? Io has a different internal heat source. … Io’s elliptical orbit is necessary to its tidal heating. This elliptical orbit, in turn, is a result of the orbital resonance among Io, Europa, and Ganymede.

What is Pluto's moon Charon thought to have in common with our own moon?

Pluto orbits the Sun exactly 2 times for every 3 Neptune orbits, which ensures they never come close together. What is Pluto’s moon Charon thought to have in common with our own Moon? It has the same approximate mass. It has the same average density.

Does Saturn have helium rain?

Saturn is more than 50% brighter than it ought to be for a normally cooling planet. … According to theory, this liquid helium forms droplets of “rain” that fall farther towards Saturn’s core, unleashing gravitational potential energy that makes Saturn more luminous.

Which large Jovian moon is thought to have been captured?

Which large jovian moon is thought to have been captured into its present orbit? The key clue is the fact that Triton orbits in the opposite direction of Neptune’s rotation, indicating that it did not form within the “miniature solar nebula” that gave birth to Neptune.

Where is Enceladus?

Enceladus is one of the major inner satellites of Saturn along with Dione, Tethys, and Mimas. It orbits at 238,000 km from Saturn’s center and 180,000 km from its cloud tops, between the orbits of Mimas and Tethys.

Is Saturn habitable?

Saturn cannot support life as we know it, but some of Saturn’s moons have conditions that might support life.

Is Enceladus habitable?

Cassini revealed the dramatic truth: Enceladus is an active moon that hides a global ocean of liquid salty water beneath its crust. … They all point to the possibility of a habitable ocean world well beyond Earth’s habitable zone. Planetary scientists now have Enceladus to consider as a possible habitat for life.”

How big is Triton vs Neptune?

Also, with a diameter 5.5% that of Neptune, it is the largest moon of a gas giant relative to its planet in terms of diameter, although Titan is bigger relative to Saturn in terms of mass.

What evidence is there that Pluto and Charon are made of rock and ice?

What evidence do we have that Pluto and Charon are made of mixtures of rock and ice? Spectra show that both bodies have some surface ices and both bodies have a density of 2 grams per cubic centimeter. This diagram shows the orbit of Charon around Pluto to scale with Earth.

Is Triton going to crash into Neptune?

Discovered by Lassell in 1846 only a few weeks after the discovery of Neptune itself. … Because of its retrograde orbit, tidal interactions between Neptune and Triton remove energy from Triton thus lowering its orbit. At some very distant future time it will either break up (perhaps forming a ring) or crash into Neptune.

Is Uranus habitable?

Uranus’ environment is not conducive to life as we know it. The temperatures, pressures, and materials that characterize this planet are most likely too extreme and volatile for organisms to adapt to.

Which moon is most likely to support life?

The strongest candidates for natural satellite habitability are currently icy satellites such as those of Jupiter and Saturn—Europa and Enceladus respectively, although if life exists in either place, it would probably be confined to subsurface habitats.

What moon has an underground ocean?

Ganymede’s underground ocean contains more water than all the oceans on Earth. The solar system’s largest moon, Ganymede, in orbit around Jupiter, harbors an underground ocean containing more water than all the oceans on Earth.

What planet is Uranus?

Uranus is the seventh planet from the Sun, and has the third-largest diameter in our solar system. It was the first planet found with the aid of a telescope, Uranus was discovered in 1781 by astronomer William Herschel, although he originally thought it was either a comet or a star.

Does Mars have a moon?

Mars’ moons are among the smallest in the solar system. Phobos is a bit larger than Deimos, and orbits only 3,700 miles (6,000 kilometers) above the Martian surface. No known moon orbits closer to its planet. It whips around Mars three times a day, while the more distant Deimos takes 30 hours for each orbit.

How many moons does Earth have 2021?

The simple answer is that Earth has only one moon, which we call “the moon”. It is the largest and brightest object in the night sky, and the only solar system body besides Earth that humans have visited in our space exploration efforts.

Why is Io yellow?

Sulfur dioxide frost is ubiquitous across the surface of Io, forming large regions covered in white or grey materials. Sulfur is also seen in many places across Io, forming yellow to yellow-green regions.

Why was Io named Io?

Io is named after a maiden who was loved by Zeus. In the Greek myth, Zeus turned her into a heifer in an attempt to hide her from his jealous wife, Hera. Io was discovered by Galileo Galilei and Simon Marius in 1610 and is one of the four Galilean satellites.

What color is Io?

Most of Io’s surface has pastel colors, punctuated by black, brown, green, orange, and red units near the active volcanic centers. A false color version of the mosaic has been created to enhance the contrast of the color variations.

Who discovered volcanoes on Io?

Its volcanic activity was discovered in 1979 by Voyager 1 imaging scientist Linda Morabito. Observations of Io by passing spacecraft (the Voyagers, Galileo, Cassini, and New Horizons) and Earth-based astronomers have revealed more than 150 active volcanoes.

Why is Io so hot?

So, why is Io so darn hot? The likeliest cause is tidal forces – the pulling and tugging of the moon by the gravity of Jupiter. Io orbits at only 421,000 km from Jupiter, making a full orbit in ~1.76 days. … This distortion causes heat through friction, thus causing Io to stay hot (and partially molten).

Does Io have a magnetic field?

Unlike Earth, whose spinning iron core generates a planet-wide magnetic field, Io has no magnetic field of its own. Instead, it is shrouded beneath Jupiter’s massive magnetosphere.

How did Galileo see Jupiter's moons?

Galileo first observed the moons of Jupiter on January 7, 1610 through a homemade telescope. He originally thought he saw three stars near Jupiter, strung out in a line through the planet. The next evening, these stars seemed to have moved the wrong way, which caught his attention.