What Is The Main Control On Whether A Planet Or Moon Has Active Tectonics And Volcanism?


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What largely determines the level of volcanic and tectonic activity on the Galilean moons?

What did the Cassini spacecraft and its Huygens probe discover on the surface of Titan the largest of Saturn’s moons? … What largely determines the level of volcanic and tectonic activity on the Galilean moons? proximity to Jupiter and its extreme tidal forces. Which of the following is true about Pluto?

What is the dominant geologic process in our solar system?

Impact cratering is the dominant geologic process in the solar system. It has affected all terrestrial planetary surfaces producing battered surfaces on Mercury the Moon and in the southern highlands of Mars.

What does this photograph which is representative of most of Mercury indicate about the planet quizlet?

What does this photograph which is representative of most of Mercury indicate about the planet? The surface of this planet is obscured by an atmosphere of thick clouds and toxic gases.

What are some observed variations between different planets in the solar system?

What are some observed variations between different planets in the solar system? Impact craters are the dominant feature on some planets and moons. composition and temperature. What causes the phases of the Moon?

Why does Venus lack plate tectonic activity?

Venus does have tectonic activity: faults folds volcanoes mountains and rift valleys. However it does not have global tectonics as there is on Earth—plate tectonics. This is thought to be due to the fact that Venus is hot and dry.

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What is the composition of the planet?

The giant planets have dense cores roughly 10 times the mass of Earth surrounded by layers of hydrogen and helium. The terrestrial planets consist mostly of rocks and metals. They were once molten which allowed their structures to differentiate (that is their denser materials sank to the center).

What factors control the geologic evolution of a planet?

Planetary geology attempts to reconstruct the evolution of planetary bodies largely from the fragmentary records that have survived on their surfaces. The evolution of any planet or satellite is in large part controlled by initial conditions such as size bulk chemistry and distance from the Sun.

What is the current dominant geological process on Mars?

Fluvial and marine processes dominate Earth both today and in its geologic past aeolian processes dominate modern Mars although in its past fluvial processes also were important Venus knows only aeolian processes and Titan shows evidence of both fluvial and aeolian processes.

What is the current theory for the formation of our solar system?

When it comes to the formation of our Solar System the most widely accepted view is known as the Nebular Hypothesis. In essence this theory states that the Sun the planets and all other objects in the Solar System formed from nebulous material billions of years ago.

What are the dominant features on the surface of Mercury quizlet?

Craters – Like the Moon the dominant surface feature on Mercury is craters. Furthermore all craters on Mercury show the same morphological characteristics as their lunar counterparts.

What was the main technique used to study the solid surface of Venus?

What was the main technique used to study the solid surface of Venus? Radar images.

What does this photograph indicate about the ages between the light colored area on the right versus the dark colored area on the left?

What does this photograph indicate about the ages between the light-colored area on the right versus the dark-colored area on the left? The area on the right is older because it contains more craters than the area on the left.

What are pieces of evidence that the Sun is the center of the solar system not the Earth?

He discovered that the sun has sunspots which appear to be dark in color. Galileo’s discoveries about the Moon Jupiter’s moons Venus and sunspots supported the idea that the Sun – not the Earth – was the center of the Universe as was commonly believed at the time.

What is the point of the other planets?

There is no “point” to anything. The earth the stars the other planets just “are”. These other bodies without life are just as deserving of existing as the Earth. Originally Answered: What’s the point of having other planets in our solar system?

Who discovered Earth?

Eratosthenes then measured the angle of a shadow cast by a stick at noon on the summer solstice in Alexandria and found it made an angle of about 7.2 degrees or about 1/50 of a complete circle.

Does the moon have tectonic plates?

The Moon’s mantle too cool to move easily has no convection and no active tectonic plate motions.

Why don t Mars and Venus have plate tectonics?

Like Earth Venus and Mars are believed to have hot interiors. This means that they are continuing to lose heat. While their surfaces show evidence of recent deformation — tectonism — neither planet has plate tectonic activity because neither planet has a surface divided into plates.

Does Venus have active volcanoes?

The surface of Venus is dominated by volcanic features and has more volcanoes than any other planet in the Solar System. … Even though there are over 1 600 major volcanoes on Venus none are known to be erupting at present and most are probably long extinct.

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Why do the giant planets and their moons have compositions different from those of the terrestrial planets?

Accretion of these larger pieces (rock or ice) formed planetesimals. Why do the giant planets and their moons have compositions different from those of the terrestrial planets? … Due to the temperature in the interior of the solar system the only substances capable of condensing there were rocks and metals.

Why do the planets in the solar system have different compositions?

The reason for different composition of planets has to do with how the solar system formed. In the early solar system there was a disk of material rotating around the Sun from which the planets eventually formed. However to form planets required some kind of initial clump in the protoplanetary disk.

What are the five main components of the solar system?

Our solar system consists of our star the Sun and everything bound to it by gravity – the planets Mercury Venus Earth Mars Jupiter Saturn Uranus and Neptune dwarf planets such as Pluto dozens of moons and millions of asteroids comets and meteoroids.

What does it mean when a planet is geologically active?

When we talk about “geologically active” as it relates to Earth we know what that means: mountain-building processes volcanic flows earthquakes canyon-creating processes plate motions erosion (by wind and water) and so on. These are processes that geologists study.

Does the moon or Mars have more active geology?

Mars represents an intermediate case and it has been much more active than the Moon. The southern hemisphere crust had formed by 4 billion years ago and the northern hemisphere volcanic plains seem to be contemporary with the lunar maria.

Which factor controls whether or not a planet will have an atmosphere and how thick it will be?

The thickness of a planet’s atmosphere depends on the planet’s gravity and the temperature of the atmosphere. A planet with weaker gravity does not have as strong a hold on the molecules that make up its atmosphere as a planet with stronger gravity. The gas molecules will be more likely to escape the planet’s gravity.

Why doesn’t Mars have active volcanoes today?

Mars today has no active volcanoes. Much of the heat stored inside the planet when it formed has been lost and the outer crust of Mars is too thick to allow molten rock from deep below to reach the surface.

What characteristics of the moon indicates that it is no longer geologically active?

The moon is no longer geologically active because: it is small so has lost most of its internal heat.

Why does Mars have less geological activity?

Volcanoes have been an important part of the history of both Earth and Mars. So why do we not see any activity on Mars today? The quick answer is because Mars is smaller than our planet.

What caused planets to form?

The various planets are thought to have formed from the solar nebula the disc-shaped cloud of gas and dust left over from the Sun’s formation. The currently accepted method by which the planets formed is accretion in which the planets began as dust grains in orbit around the central protostar.

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What are the 3 theories of the solar system?

These are the Nebular Hypothesis of Laplace the Planetesimal Hypothesis of Chamberlin and Moulton and the Capture Theory of See.

What are the four theories of the solar system?

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  • The origin of the Solar System. How did the Sun planets and moons in the Solar System form? …
  • What are the theories for the origin of the Solar System? …
  • The Accretion theory. …
  • The Protoplanet theory. …
  • The Capture theory. …
  • The Modern Laplacian theory. …
  • The Modern Nebular theory. …
  • Conclusion.

What is the dominant surface feature of mercury?

Mercury’s surface is heavily cratered and has also been modified by volcanism including pyroclastic volcanism. Surface compositions are similar to komatiites and basalts on Earth but highly depleted in iron which is located mostly in the planet’s core.

Why does Mercury not have an atmosphere quizlet?

Why does mercury have no atmosphere? Because it is so close to the sun the sun burns the atmosphere up. … Mercury is the smallest planet in the Solar System.

Why does the moon have more impact craters than Earth does?

Why does the Moon have so many craters compared to the Earth? Unlike the Earth the Moon has no atmosphere to protect itself from impacting bodies. It also has very little geologic activity (like volcanoes) or weathering (from wind or rain) so craters remain intact from billions of years.

What is the best way to obtain information about the surface of Venus?

The powerful Goldstone Solar System Radar in California has sent radar waves to Venus to study its surface. Scientists such as Richard Goldstein used the radar to take one of the first range-Doppler pictures of that planet. His images identified surface features in the planet’s northern and southern hemispheres.

The Geology of the Planets of the Solar System with Emily Lakdawalla

Lesson 2 – Tour of the Solar System

Phases of the Moon – Viewed from Southern Hemisphere

Volcanic eruption explained – Steven Anderson

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