points) Part I: Soils (8 points) Using your textbook, module resources, and this website, http://school.discoveryeducation.com/schooladventures/soil/, answer the questions below: Define soil. An infinitely varying mixture of weathered mineral particles, decaying organic matter, living organisms, gases, and liquid solutions Provide a description of each of the following horizons: Ground level –Its where plants grow. a thick cover of plants keeps the soil cool and from dieing…
Virginia Resources and Weathering/Soils Review Terms to know: Olivia Anderson Block One 12/12/11 Physiographic province-A landform region, an area delineated according to similar terrain that has been shaped by a common geologic history. Appalachian plateau-Coal mining Valley and ridge-Shenandoah Valley Blue ridge-Old, rounded mountains, Mount Rodgers Piedmont-“land at the foot of the mountains”, rolling hills, west of fall line Coastal Plain-(Tidewater), flat land, east of fall line…
effects of weathering and erosion. Each response must be at least 200 words. |Effects of Weathering |Effects of Erosion |What are the Differences? | |Weathering is the process of rock material |Erosion is when wind, water and ice |One difference between weathering and | |being broken up by air and water. One type |dislodge, dissolve or remove the materials |erosion is how humans can effect erosion | |is mechanical weathering…
of plants can promote mechanical weathering by pushing into a rock, causing root wedging, widening fractures, and exposing it to elements that could further weather rock. Chemical weathering can be caused by roots, fungi getting into fractures, or encrust a rock produce acids that promote decomposition. Plants, however, prohibit erosion because the roots of the plants hold the soil together and help prevent soil from being moved by water, wind, rain. 2. Chemical weathering is predominant, basalt…
th 8 Grade Science Test Review Ch 2-3 Oceans & Currents 1. What two factors affect the ocean’s surface temperatures? Two factors that affect the surface temperature of the oceans are latitude and time of the year. 2. Define salinity. Salinity is a measure of the amount of dissolved salts in given amount of liquid. 3. What two factors increase the salinity of ocean water? Evaporation and also if the water is slow moving it will have a higher salinity. 4. Explain how rivers cause the salinity of…
Preexisting rocks can be modified by heat, pressure and chemical agents to create new forms. 1. Distinguish between chemical and mechanical weathering, a short definition of economic mineralogy (page 136) Mechanical Weathering is the physical breakup of rocks into smaller particles without a change in chemical composition of the constituent minerals Chemical Weathering is the selective removal or alteration of specific components that leads to weakening and disintegration of rock. Economic Mineralogy:…
Garnero 1. Frost wedging is the major weathering process contributing to the formation of: TALUS SLOPES 2. Which two factors speed up rates of chemical reaction and weathering in rocks and soils? WARM TEMPERATURES; VERY MOIST 3. Which best describes sets of fractures in relatively fresh bedrock, such as granite, that are roughly parallel to the land surface? SHEETING FRACTURES 4. How do large, spheroidal boulders form from massive bedrock? CHEMICAL WEATHERING OCCURS MORE ON EDGES AND CORNERS. WHICH…
Geology Exam 1 The earth is a dynamic planet it is constantly evolving and we can see that on geologic time scale Chapter 5 1. What is a mineral? A naturally occurring solid formed by geologic process that has crystalline structure and definite chemical composition 2. What are the 8 most abundant minerals in the earths crust? (98.5%) a. Oxygen b. Silicon c. Aluminum d. Iron e. Calcium f. Sodium g. Potassium h. Magnesium 3. What is an ion? An atom with a net electric charge due to the loss or…
provide answers in a different color! Nitrogen Cycle: 1. What is the process called where nitrogen moves from the atmosphere to the ground? Nitrogen fixation Which organism(s)/process cause this to happen? Nitrogen fixing Bacteria that live in soil plants or water capture nitrogen from the air. 2. What type of bacteria performs nitrification? Nitrifying bacteria. Also Lightning. 3. What type of bacteria performs denitrification? Denitrifying bacteria 4. How do plants obtain the…
time -Extremely low viscosity -Basalt rock Weathering Weathering –the disintegration and decomposition of rock by physical or chemical processes Physical weathering-the mechanical process(es) that break rock into smaller pieces “using a hammer” Chemical weathering-the process(es) by which minerals in the rock are changed into other minerals or dissolved Chemical and physical weathering rein forces each other -the greater the chemical weathering the weaker the rock: the easier it is to break…
