PDF-Clark et al.:Space Weathering and Regolith Evolution

Asteroid Space Weathering and Regolith EvolutionCornell UniversityBruce HapkeUniversity of PittsburghBrown UniversityUniversity of Tennessee Over time exposure of airless bodies to the space environm. L LANDFORMS AND THEIR EVOLUTION As the geomorphic agents are capable ofcomponents of running water. One is overlandflow on general land surface as a sheet. Another gradients.cut their beds slower, an Physical . weather reduces the particle size of rocks and in doing so prepare the material for chemical weathering. The rate of all chemical reactions involving solids is determined by the amount of exposed surface area. These four drawing illustrates sequentially dividing particles into smaller particles. Assuming a dimension of 1 cubic centimeter . Dan Britt. University of Central Florida. What Do We Need to Know About NEA Physical Properties?. Asteroid Structure. Rubble pile?. Coherent object?. Material Strength. Tough? Weak?. Mineralogy. Thermal Properties. Miss Johnstone’s Expectations. Arriving and leaving the classroom. Presentation. Underline your titles. Always put the date. Draw in pencil. Draw a line under previous lessons work and carry on. Learning Objectives. SOLID MODEL. BACKGROUND. TRENCHING AND LAYING CABLE ON THE LUNAR SURFACE. MEHRDAD HOOSHMAND, CITY COLLEGE OF NEW YORK. POWER REQUIREMENTS. NASA’s future in space exploration is focused on expanding and building upon the achievements of the past 60 years, including return missions to the moon and expanded plans to visit Mars. Efforts to return to the moon are to be coupled with the potential construction of self-contained lunar colonies, which will allow scientists to study the geology, astronomy, and physics of extended stays in space, providing the data and confidence necessary to develop missions to destinations such as Mars and beyond.. Weathering: . The . process that breaks down rock and other substances at Earth’s surface.. Factors that contribute to weathering include:. Heat, cold, water. , ice, oxygen, and carbon dioxide. Erosion: . Weathering. The breaking down of rock into smaller pieces that remain next to each other. . Weathering forms sediments.. There are two types of weathering.. Mechanical (Physical) . Chemical. Mechanical Weathering. Erosion. The carrying weathered rock from one location to another . Mechanical Weathering. Rock is physically broken down. Smaller pieces have same composition. Chemical Weathering. Rock is chemically broken down. Predict how weathering might reshape surface features (topography). Weathering and Erosion. The top part of the lithosphere—the earth’s surface—changes as rocks are broken down to smaller pieces and carried away.. SC. Space charge collaboration meeting . – CERN – 20/05/2014. . Vincenzo . Forte. CERN BE-ABP-HSC. Université . Blaise . Pascal – Clermont Ferrand - France. Thanks to:. E. Benedetto, M. McAteer, M. . Weathering can be defined as any. chemical or mechanical process by which rocks exposed to weather undergo changes in character or are broken down into smaller pieces. .. Mechanical Weathering. Mechanical Weathering. Geomorphology (. GEO 301). Geology and Geophysics Department. College of Science. King Saud University. WEATHERING PROCESSES. Weathering is the breakdown of rocks by . mechanical disintegration . and chemical decomposition.. What is Weathering?. The scenes of the world are continuously mutating. Sun, rain, frost, and wind are breaking down even the most solid of the rocks into smaller bits before they are taken away. This process is termed as weathering. . Lesson 3 . Please Do Now!!!!! . -Looking at this picture what do we think caused this boulder to break apart???. -Please write down your thoughts. . -If you get the correct answer Miss. Swisher will give you a dollar. .