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Chapter One Exploring Geography The Universe: age of the Universe at 13.7 billion years. http://www.youtube.com/watch?v=JvdL3R7 fDL4 Latitude and Longitude THE CARTOGRAPHER’S TASK Scientists collect data: remote sensing/census/ sonar Cartographers display this data: 1 – globes 2 - maps; inherent distortions Four components of a MAP: 1- title 2- legend (key) 3- scale 4- direction indicator A Classical Mercator Projection Cartographers for Social Equality www.youtube.com/wat ch?v=n8zBC2dvERM Mercator Projection Peters Projection • • • • • • • • • • 1. 45N and 00W 2. 15S and 135E 3. 30N and 105E 4. 15N and 30E 5. 60N AND 15E 6. 45N AND 105W 7. 30N and 75E 8. 60N and 45E 9. 30S and 60W 10. 15S and 45W bonus city: 28.20N and 97.08W • • • • • • • • • • 1. France 2. Australia 3. China 4. Sudan 5. Sweden 6. USA 7. India 8. Russia 9. Argentina 10. Brazil THE 5 THEMES OF GEOGRAPHY CH 1 SECTION 1 NOTES THE FIVE THEMES OF GEOGRAPHY • • • • • Location Place Human-Environment Interaction Movement Regions LOCATION Where are we? • Absolute Location – A latitude and longitude (global location) or a street address (local location). – Paris France is 48o North Latitude and 2o East Longitude. – The White House is located at 1600 Pennsylvania Ave. • Relative Location – Described by landmarks, time, direction or distance. From one place to another. – Go 1 mile west on main street and turn left for 1 block. PLACE What is it like there, what kind of place is it? • Human • Physical Characteristics Characteristics • What are the main languages, customs, and beliefs. • How many people live, work, and visit a place. • Landforms (mountains, rivers, etc.), climate, vegetation, wildlife, soil HUMAN-ENVIRONMENT INTERACTION • How do humans and the environment affect each other? – We depend on it. • People depend on the Tennessee River for water and transportation. – We modify it. • People modify our environment by heating and cooling buildings for comfort. – We adapt to it. • We adapt to the environment by wearing clothing suitable for summer (shorts) and winter (coats), rain and shine. MOVEMENT • How are people, goods, ideas moved from place to place? – Human Movement • Trucks, Trains, Planes – Information Movement • Phones, computer (email), mail REGIONS • How are Regions similar to and different from other places? – Formal Regions • Regions defined by governmental or administrative boundaries (States, Countries, Cities) • Regions defined by similar characteristics (Corn Belt, Rocky Mountain region, Chinatown). – Functional Regions • Regions defined by a function (newspaper service area, cell phone coverage area). – Perceptual Regions • Regions defined by peoples perception (middle east, the south, etc.) Remembering the 5 themes • If you can’t remembering what they are just ask MR. HELP!!! • M – Movement • R – Regions • HE – Human Environment interaction • L – Location • P - Place • Mr. Lip • http://www.youtube.com/watch?v=AIqC79 WrpKg THE LAYERS OF THE EARTH Map of Gondwana, showing break-up into modern landmasses and the distribution of key fossils across these landmasses. Break up of Pangea model: Plate tectonics: Weathering • Weathering- is breakdown of rock at or near the earth’s surface into smaller and smaller pieces. • Over millions of years, weathering can reduce a mountain to gravel. • Two kinds of weathering: Mechanical weathering, chemical weathering Glacial moraines: Mechanical Weathering • Occurs when rock is actually broken or weakened physically. • Breaks large masses of rock into even smaller pieces, producing boulders, stones, pebbles, sand, silt, and dust. • Common mechanical weathering: takes place when water freezes to ice in a crack in the rock. Water expands when it freezes ice widens the crack. Frost wedging. Mechanical Weathering • Seeds take root in cracks in rocks, sidewalks crack when tree roots grow beneath them. Chemical Weathering • Chemical weathering can destroy a rock • Is the process of chemical weathering alters a rock’s chemical makeup by changing the minerals that form the rock or combining them with new chemical elements. Change one kind of rock into a completely different rock. Chemical Weathering • Water, carbon dioxide important factors. • Caves formed with carbon dioxide • Dry regions there is little chemical weathering. Wet and damp area chemical weathering occurs quickly and is widespread. • Acid rain- type of chemical weathering, chemicals in polluted air combine with water vapor and fall back to earth as acid rain. Chemical Weathering • Acid rain destroys forests and pollutes water, and eats away at the stone buildings and natural rock formations. Erosion • Is the movement of weathered materials example: gravel, soil, and sand. • Three common causes of erosion are water, wind, and glaciers. • Sediment-small particles of soil, sand, and gravel. Sandpaper. Weathering: Mechanical Chemical Landform Diagram – see page 42 text. Weather and Climate • Weather- is the condition of the bottom layer of the earth’s atmosphere in one place over a short period of time. • Atmosphere – is multilayer band of gases, water vapor, and dust above the earth. • Weather is an almost constant change, sometimes shifting from warm to cool and back again in a short period of time. Weather and Climate • Climate- is the term of the weather patterns that an area typically experiences over a long period of time. • Climate of an area depends on a number of factors: – Elevation – Latitude – Location in relation to nearby landforms and bodies of water. Currents • Waters and oceans help distribute heat • Following convection patterns similar to those of winds, ocean currents, both near the ocean’s surface and far below it. • Precipitation: – Humidity is the amount of water vapor contained in the atmosphere. – Forms when air temp changes. Convectional Precipitation • Hot , humid air rises from the earth’s surface and cools, thereby losing its ability to hold much water. • Common near the Equator and in the tropics. • Produces nourishing rainfalls that feed lush, tropical forests Orographic Precipitation • Warm, moist air is forced upward when passing over high landforms causing precipitation. • Common on the seacoasts where moist ocean winds blow toward coastal mountains. • Warm winds cool as they rise up over the mountains. Frontal Precipitation • Common kind of precipitation occurs when two fronts : air masses of different temperatures meet. • Warm air is forced upward by the heavier cool air. Rising warm air cools and frontal precipitation forms. Other Influences on Climate • Nearby bodies of water: – Winds blow over water take on the waters temperature. – Continental climates: • Northern Hemisphere have what are known as continental climates. • Hold and warm summers and cold, snowy winters