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What geologic processes are associated with meteor craters?
Meteor craters are formed when a meteorite collides with Earth's surface at high velocity, creating a shockwave that excavates a crater. The impact causes intense heat and pressure that can melt and deform rocks in the surrounding area. Ejecta material is also thrown out from the impact site, creating a distinctive rim and sometimes a central peak within the crater.
What color is the lava as it comes out of the vent?
Lava can range in color from bright orange to dark red, depending on factors like temperature and chemical composition. The high temperature of the molten rock causes it to emit a glowing light in the visible spectrum.
Material thrown out from an impact crater settles to form which of the following structures?
Material thrown out from an impact crater settles to form a raised rim or ejecta blanket around the crater.
Is water present in earths moon?
Earth's moon has no surface liquid water. Those dark patches that are called "mare" (Italian word for "sea") are actually just darker colored material, which most likely up welled as molten rock from massive impacts eons ago.There IS subsurface water ice, however, beneath lunar soil in polar craters hidden in perpetual shadow. The ejecta from NASA's Lunar CRater Observation and Sensing Satellite(LCROSS), which was dropped into a polar crater, revealed atomic absorption spectra for water.
Which of the items is not part of the composition of the soil like lunar regolith?
Water is not part of the composition of lunar regolith. Lunar regolith is made up of fine rock and dust particles created by meteorite impacts on the moon's surface, whereas soil on Earth contains water along with minerals, organic matter, air, and living organisms.
The material that falls back to the moon surface after the impact blast is?
called ejecta. Ejecta consists of debris, rocks, and dust that are expelled during an impact event on the moon's surface. It can create craters and contribute to the lunar regolith.
Which is associated with young craters?
Young craters are often associated with features like sharp rims, well-defined ejecta blankets, and a relatively fresh appearance due to the lack of weathering or erosion. These features indicate that the crater was formed relatively recently in geological terms.
What happens to ejecta blankets with age?
Ejecta blankets on celestial bodies like the Moon gradually degrade due to a combination of factors such as impacts from meteorites, solar radiation, and micrometeorite erosion. Over time, the sharp edges of the ejecta material become rounded, and the overall appearance becomes smoother as the blanket settles and redistributes.
The features on the Moon formed by objects crashing into its surface are?
Impact craters, rays, and ejecta blankets are features on the Moon formed by objects crashing into its surface. Impact craters are circular depressions, rays are lines emanating from impact sites, and ejecta blankets are the material thrown out during impact that surrounds the crater.
What are the long trails of ejecta that radiate outward from craters called?
The long trails of ejecta that radiate outward from craters are called "rays." These rays are formed when material is ejected during the impact event of a meteorite or asteroid striking a planetary surface, such as the Moon or other celestial bodies. The rays can extend for many kilometers and are often more prominent on younger craters, indicating their relatively recent formation.
Lunar craters that are relatively young exhibit?
Young lunar craters exhibit many features, but the most prominent is "rays". These are streaks of light colored debris that spread radially outward from the impact crater. The Tycho Crater is the classic example.
What is lunar ejecta?
Lunar ejecta refers to material (such as rocks, dust, and gas) that is ejected from the Moon's surface due to impacts from meteoroids or other space debris. This material can be thrown out at high velocities and can create impact craters or contribute to the Moon's regolith (surface material).
What are lunar rays are the same age as?
The ray systems correspond to the craters produced at the same time. Some ray systems on the Moon are from older craters that have since been overlaid by subsequent impacts in the same area.
What features of the moon are caused by rocks or comets that crash into its surface?
Impact craters, rays, and regolith (loose, fragmented material) are features on the moon caused by rocks or comets crashing into its surface. Impact craters are circular depressions formed by high-speed impacts, rays are long trails of ejecta material, and regolith is the layer of broken rock and dust covering the moon's surface.
What is the name of the material that is thrown from an impact crater?
The name of the material that shaters or brakes during impact is called sediment.
What is the material that falls back to the lunar surface after being blasted out by the impact of a space object?
The material that falls back to the lunar surface after being blasted out by the impact of a space object is known as ejecta. Ejecta typically consists of a mixture of rocks, dust, and other debris that is thrown out from the impact site and can create secondary craters upon re-impact.
What does the craters on mercury look like?
Craters on Mercury vary in size from small to large and can have different shapes, with some showing central peaks or flat floors. They typically appear as circular depressions on the surface of the planet, formed as a result of impacts from asteroids or comets. The craters are surrounded by raised rims and ejecta blankets composed of material thrown out during the impact event.
