What Evidence Exists That Some Of The Asteroids Were Geologically Active In The Distant Past?

What Evidence Exists That Some Of The Asteroids Were Geologically Active In The Distant Past??

What evidence exists that some of the asteroids were geologically active in the distant past? A few of the larger asteroids show similar reflectance spectra (colors) similar to achonrite stony lava-like meteorites.

Why is it believed that the rings of Saturn could not have formed just as the planet itself formed quizlet?

Why is it believed that the rings of Saturn could not have formed just as the planet itself formed? The rings are made of ice particles which would have been vaporized by the heat released as Saturn formed.

Which of these Galilean satellites is most geologically active group of answer choices?

Nevertheless it was simply referred to as “Jupiter I” or “The first satellite of Jupiter” until the mid-20th century. With over 400 active volcanos Io is the most geologically active object in the Solar System. Its surface is dotted with more than 100 mountains some of which are taller than Earth’s Mount Everest.

What do meteorites tell us about the solar system quizlet?

What do meteorites reveal about the solar system? They reveal that the age of the solar system is approximately 4.6 billion years. (Note that while it is true that the early solar system consisted mainly of hydrogen and helium gas meteorites do not tell us this because they are made of rock and metal.)

What is the typical size of most known asteroids?

Most of this ancient space rubble can be found orbiting our Sun between Mars and Jupiter within the main asteroid belt. Asteroids range in size from Vesta – the largest at about 329 miles (530 kilometers) in diameter – to bodies that are less than 33 feet (10 meters) across.

What is one possible reasons Jupiter and Saturn radiate more energy than they receive from the sun?

Why do Jupiter and Saturn radiate more energy than they receive from the sun? … Saturn’s radius is larger at its equator than at its poles. Saturn rotates differentially which in the case of Saturn means that. the equator rotates faster than its poles.

How were Uranus’s rings discovered?

On this day in 1977 astronomers James Elliot Ted Dunham and Jessica Mink discovered that Uranus has rings. The discovery was made aboard the Kuiper Airborne Observatory an airliner fitted with an infrared telescope. … Elliot Dunham and Mink concluded that a system of at least five rings was responsible.

Which of the Galilean satellites are geologically active quizlet?

Galilean moons refer to the largest of the moons. Io Europa Ganymede and Callisto. They are all tidally locked. Io is the closest moon to Jupiter and the most geologically active world.

On which one of Jupiter’s Galilean moons is there evidence of present tectonic activity?

The tectonic activity on Ganymede took place in the moon’s past but its neighbor and fellow water world Europa shows evidence of present-day plate tectonics indicating the watery world is still active.

What are the Galilean satellites list their names and properties?

The Galilean moons (or Galilean satellites) /ɡælɪˈliːən/ are the four largest moons of Jupiter—Io Europa Ganymede and Callisto. They were first seen by Galileo Galilei in December 1609 or January 1610 and recognized by him as satellites of Jupiter in March 1610.

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What information can meteorites provide about Earth?

Meteorites that fall to Earth represent some of the original diverse materials that formed planets billions of years ago. By studying meteorites we can learn about early conditions and processes in the solar system’s history.

Why is it hard to find evidence of asteroids striking the Earth quizlet?

Ancient impact craters are difficult to identify because they are commonly either eroded or filled with sedimentary deposits that are younger than the impact. Most impact sites on Earth are in the ocean where craters are subsequently buried by marine sediment or destroyed by plate tectonic processes.

Why do meteorites reveal about the solar system?

Meteorites Are Important Markers of Time

When it comes to the formation of the planets meteorites are an important marker of time. Meteorites come from a variety of sources like the Moon Mars and asteroids. Some of the oldest meteorites have come from planetesimals like the ones that formed the planets.

How were asteroids formed?

Asteroids are leftovers from the formation of our solar system about 4.6 billion years ago. Early on the birth of Jupiter prevented any planetary bodies from forming in the gap between Mars and Jupiter causing the small objects that were there to collide with each other and fragment into the asteroids seen today.

Why is Pluto not a planet?

Answer. The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”

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How do astronomers classify asteroids?

Individual asteroids are classified by their characteristic spectra with the majority falling into three main groups: C-type M-type and S-type. These were named after and are generally identified with carbon-rich metallic and silicate (stony) compositions respectively.

What causes the geological activity seen on some of the moons of Jupiter?

What causes the geological activity seen on some of the inner moons of Jupiter? Tidal friction as a result of being so close to Jupiter it heats up their interiors.

What is the most geologically active world we know of in the solar system?

The moon Io is the most volcanically active world in the solar system. Io even has lakes of molten silicate lava on its surface.

What causes the geological activity seen on Europa and Io?

Tidal friction as a result of being so close Jupiter heats their interiors. … Solar radiation reflected of Jupiter’s surface provides a power source for geological activity.

How were Neptune’s rings formed?

It’s believed that the rings of Neptune are relatively young – much younger than the age of the Solar System and much younger than the age of Uranus’ rings. They were probably created when one of Neptune’s inner moons got to close to the planet and was torn apart by gravity.

When was Uranus moons discovered?

1787
Oberon and Titania are the largest Uranian moons and were first to be discovered—by William Herschel in 1787. William Lassell who had been first to see a moon orbiting Neptune discovered the next two Ariel and Umbriel. Nearly a century passed before Gerard Kuiper found Miranda in 1948.Dec 19 2019

What does Uranus rings look like?

Rings. Uranus has two sets of rings. The inner system of nine rings consists mostly of narrow dark grey rings. There are two outer rings: the innermost one is reddish like dusty rings elsewhere in the solar system and the outer ring is blue like Saturn’s E ring.

What is the most geologically active object we know of in the Solar System quizlet?

Because of its small size Mercury has lost most of its internal heat from its formation and is nearly geologically dead. Io is smaller than Mercury but it is the most geologically active object in the Solar System with volcanic eruptions constantly repaving its surface.

What causes Io to be so active geologically quizlet?

Io must be made of a substance that traps heat better so it has still retained all of its initial internal heat from its formation. Gravitational tidal heating is stronger on Io than any other moon in the Solar System providing a source of heat that causes its high level of geological activity.

Which of the following objects is most geologically active at the present day?

With over 400 active volcanoes Io is the most geologically active object in the Solar System. This extreme geologic activity is the result of tidal heating from friction generated within Io’s interior as it is pulled between Jupiter and the other Galilean moons—Europa Ganymede and Callisto.

Which Galilean moons are geologically active?

Io is in a gravitational tug-of-war with Ganymede and Europa that drives the tides that make these moons so geologically active.

Is Jupiter geologically active?

21.2. 1 Io. … The strong gravitational pull of Jupiter causes Io to be geologically active and it’s thought to be the most geologically active object in the Solar System with over 500 volcanic centres and over 100 mountains some almost twice the height of Everest.

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What is the most common geological feature seen on moons?

Craters are the most common surface features on many solid planets and moons—Mercury and our Moon are covered with craters. This portion of the Moon is covered by numerous circular holes. These are impact craters each of which was formed when an asteroid or comet collided with the Moon’s surface.

Is there a moon named Triton?

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. Scientists think Triton is a Kuiper Belt Object captured by Neptune’s gravity millions of years ago.

How did the Galilean moons prove that Earth was not the center of the universe?

After observing the moon Galileo shifted the telescope and was able to see Jupiter. … Galileo had seen three of Jupiter”s four largest moons effectively proving the Earth was not the center of the universe.

Is Saturn the only planet with a ring?

Saturn is the sixth planet from the Sun and the second-largest planet in our solar system. Like fellow gas giant Jupiter Saturn is a massive ball made mostly of hydrogen and helium. Saturn is not the only planet to have rings but none are as spectacular or as complex as Saturn’s. Saturn also has dozens of moons.

Why are meteorites considered important clues to the composition of Earth’s interior?

Why are meteorites considered important clues to the composition of Earth’s interior? Meteorites are thought to be made of the same material from which Earth was formed. Therefore when they are found they can give us an indication of the composition of the interior of Earth.

Where are meteorites most commonly found?

Meteorites are most easily recognized and recovered from geologically stable desert regions – either hot (like Arizona ) or cold (like Antarctica).

How do meteorites help scientists to know about the interior of the Earth?

At the time of the origin of the earth every planet and meteorites were floating in the space and the materials of the earth were same as that of the meteorites. So the scientists can calculate the composition of rocks ofthe earth by studying the materials found in the meteorites.

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