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What is thought to be the reason that there are no small impact craters on Mars?
Wiki User
∙ 12y ago
The wind blows small dust particles, eroding the surface of Mars, erasing small impact craters faster than they can form.
Wiki User
∙ 12y ago
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What is visible on the moon?
There are several lunar features that are visible to the naked eye, and more are visible with even a very small telescope.The craters are probably the most obvious; circular impact craters caused by the collision of some very large asteroids or comets have created circular mountain ranges that are hundreds of miles in diameter. There are craters in craters, craters ON craters, and chains of craters. Because the Moon lacks an atmosphere, there are no erosive forces to break down and hide the craters (as there is here on Earth) and so the only thing wearing away the old craters are ..... new craters!Lunar craters are usually named for astronomers and scientists.The other major features of the Moon are the maria, or seas. Originally believed to be oceans and seas of water by classical observers, we now believe that they were made by lava flows.
Mercury's cratered surface is indicative of 1. A lack of a sustancial atmosphere 2. greater bombardment by asteroids than other planets away 3. impact by solar particles 4 its small size?
The most correct answer would be #3 because without solar particles, there probably would be no craters regardless of the other factors. A substantial atmosphere would reduce the number of craters by causing the particles to burn up on entry, The remaining craters would be quickly eroded by a substantial atmosphere as they are here on earth.
Does Jupiter have impact craters?
Yes, there are some craters on the Earth. The Moon and Mercury, for example, have far more craters than the Earth or Mars do, because on the airless, weather-less Moon and Mercury, there is nothing to wear away a crater - except another impact event.Mars has wind and sandstorms, while Earth has rain, wind, earthquakes and plants to cover up or wear away the marks of meteoric impacts. One of the clearest is the Barringer Meteor Crater near Winslow, Arizona, but there are hundreds of craters visible from satellite images; some so large that people never realized that their town, or city, or county, was within the ringwall of a meteor crater.
Why are all planets round in shape?
Planets are round because they are bond together by gravity. Picture a planet as a bunch of rocks floating in space. Those rocks will be attracted to each other by gravity and in the same way a rock rolls down a hill to the lowest spot, it will for a sphere.
How is crater different from caldera?
craters are usually caused by other things like small astroids, a caldera is caused by a volcanic chamber caving in.
How many craters Earth?
There are a huge number of craters on the Earth, including very small impact sites. There are about 65 named and documented craters on the planet.
Are craters larger than calderas?
Not necessarily. Some impact craters are quite small, down to only a few meters across. At the other end, some impact craters are far larger than calderas.
Do impact craters often have a little peak in the center?
They often do have a small peak in the center, but not always.
Can you see craters on the moon from earth?
No. Most of the impact craters that have formed on Earth have been destroyed and buried by geologic processes, processes that the moon lacks. While some recent impact craters on Earth remain visible on the surface, they are too small to be seen from the moon.
How are craters fomed on the moon?
Craters on the Moon are formed by the impacts of meteoroids of varying sizes. Small rocks make small craters, and bigger rocks make larger craters.
How does the number of craters on Phobos and Deimos suggest that these moons are very old?
Phobos and Deimos are the two moons of Mars. They are small and shaped irregularly. The surfaces are scarred by many large impact craters. This is why the moons are extremely old.
What can you find on Phobos?
Not much. You would see some impact craters, and maybe a little dust. Phobos is such a small planetary satellite that it is not even spherical.
What is Jupiter's terrain?
it has craters and small mountains
What is visible on the moon?
There are several lunar features that are visible to the naked eye, and more are visible with even a very small telescope.The craters are probably the most obvious; circular impact craters caused by the collision of some very large asteroids or comets have created circular mountain ranges that are hundreds of miles in diameter. There are craters in craters, craters ON craters, and chains of craters. Because the Moon lacks an atmosphere, there are no erosive forces to break down and hide the craters (as there is here on Earth) and so the only thing wearing away the old craters are ..... new craters!Lunar craters are usually named for astronomers and scientists.The other major features of the Moon are the maria, or seas. Originally believed to be oceans and seas of water by classical observers, we now believe that they were made by lava flows.
These things are known to have battered the moon?
Space rocks. On Earth we would call them "meteors", because they would generally burn up while passing through the atmosphere. The Moon has no atmosphere, so there's nothing to prevent small space rocks from crashing into it. This has left the Moon covered with millions of craters; big craters, little craters, craters IN craters, and craters ON craters.
How does the atmosphere on a planet prevent impact cratering?
It is commonly stated that a planet's atmosphere acts as a sort of shield against impacts. It is only partially true. Small meteoroids will burn up in the atmosphere while some larger objects will break into fragments that then reach the surface at much lower speeds. Large asteroids and comets, on the other hand, are largely unhindered by even a thick atmosphere. These are the objects that leave craters that are plainly visible from space. When impact craters do form, however, the presence of an atmosphere may cause erosion and movement of sediment that can wear down and bury impact craters.
What is the process on earth that has wiped away evidence of impact craters?
Erosion is responsible for the gradual wearing away of the evidence of impact craters. Wind is able to carry small particles that can slowly chafe and wear away the jagged and steep slopes, while water likewise can carry soil away. Both of these processes smooth the edges of an impact crater. Given enough time, the crater's edges could be sanded down by erosion to the point that a crater looks no different from any other valley.
