The structure of the earth The earth has three major parts-the land part or lithosphere‚ the water part or hydrosphere and the air part or atmostpere. The lithosphere is the surface on which you live . It is also the earth solid sphere consisting mainly of massive rocks. The massive rocks form large land masses called continent and small island groups . Different land form such as mountains‚hills‚valleys‚plateaus and plains make up the lithosphere. The hydrosphere include all water forms
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Global Warming And Its Effects On The Coastal Areas of Bangladesh [pic] [pic][pic] GLOBAL WARMING: Global Warming is the rise in the average temperature of the Earth’s atmosphere‚ including the surface air and oceans. In simple words global warming is when the Earth heats up. It is caused mainly due to increasing concentration of greenhouse gases in the Earth’s atmosphere. The greenhouse gases‚ include carbon dioxide‚ nitrous oxide‚ methane‚ water vapor‚ traps heat and light in the
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Approximately every 100‚000 years Earth’s climate warms up temporarily. The Earth is in a warming period since the Ice Age. The warming periods called glacial periods cause the Earth to retrogress back to a cold ice age climate after a couple of years. This leads to the growing debate of today‚ Is global warming caused by humans? Or caused naturally? This is a controversial issue and debate today‚ however‚ global warming is not man-made‚ in fact‚ it is a normal and natural cycle for the Earth and
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and regolith near the Earth’s surface mainly due to the force of gravity. Mass movements are an important part of the erosional process‚ as it moves material from higher elevations to lower elevations where transporting agents like streams and glaciers can then pick up the material and move it to even lower elevations. Mass movement processes are occurring continuously on all slopes; some act very slowly‚ others occur very suddenly‚ often with disastrous results. Any perceptible down slope movement
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natural features that appear on the surface of the Earth. They are formed either by the movement of tectonic plates or the action of water or ice. The Earth’s surface is the result of both constructive processes. Destructive Processes -Weathering -Erosion Constructive Processes -Plate Tectonic processes (volcanic eruptions) -Deposition Major Landforms •Mountains and Mountain Chains A mountain is a large landform that stretches above the surrounding land in a limited area‚ usually in the form of
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that form the Oneonta Formation derived from the weathering and erosion of mineral grains from pre-existing rocks. In turn‚ the Oneonta Formation rocks are exposed through later uplift and erosion by both water and ice. Materials Brunton Pocket Transit Compass General Procedure 1. Measure an outcrop and carefully sketch the features exposed on the surface. Identify any small and large-scale cross bedding. Also‚ note any erosion surfaces cutting into “horizontal strata” or shales at an angle
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The types of metamorphic rocks are Greywacke‚ Slate‚ Schist‚ Marble and Sandstone. The transition to sedimentary the earth’s surface is always eroding this means rocks are being broken into smaller pieces by weathering of wind‚ water and ice. By erosion and weathering sediments are
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A climate record — extending deep into the Earth’s past — has been assembled‚ and continues to be built up‚ based on geological evidence fromborehole temperature profiles‚ cores removed from deep accumulations of ice‚ floral and faunal records‚ glacial and periglacialprocesses‚ stable-isotope and other analyses of sediment layers‚ and records of past sea levels. More recent data are provided by the instrumental record. General circulation models‚ based on the physical sciences‚ are often used in
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– variations in amount of energy given off by sun – sunspots can affect solar output – e.g. reduction in sunspot activity between 1645-1715 likely cause of Little Ice Age Orbital Geometry – earth’s orbit of the sun varies in shape – when circular glacial periods have occurred‚ when elliptical warmer periods result (Milankovitch Cylces) www.geobytesgcse.wordpress.com Name and describe 2 external factors which affect climate change Year 11 - Challenges to the Planet www.geobytesgcse.wordpress
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Geography exists throughout our everyday lives‚ where we live‚ where we work‚ what we eat‚ and what we believe in. It plays an essential role in understanding why‚ where‚ or how something exists. For example‚ an introduction to geography gives the knowledge of understanding how certain landforms were formed‚ or why certain bodies of water exist. This further leads to how certain weather patterns form‚ thus creating different types of biomes and substantial agricultural productions. Geographers
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