Geography 7 Introduction to Geography Cardinals! The Global World Artic Ocean ASIA N. America Europe Atlantic Ocean Pacific Ocean Africa Pacific Ocean Indian Ocean S. America Australia Southern Ocean Antarctica The New Global World – Region Artic Ocean Russia and Eurasian Republic N. America Europe Atlantic Ocean Modern Middle East M. America Pacific Ocean S. America Sub-Sahara N. America Africa S. Asia E. Asia Indian Europe Ocean Pacific Ocean S. E. Asia Oceania Australia Southern Ocean Antarctica What is Geography? Geography is the study of everything on Earth, from rocks and rainfall to people and places. Geographers study how the natural environment influences people, how people’s activities affect Earth, and how the world is changing. Geographer’s must look at many different things, including cities, cultures, population, political, economical, natural resources, and the physical environment. Geographer’s focus on “where” things are and “why” they are there Geographer’s organize materials by place, because they understand that something happening at one place can result from something that happened elsewhere and can affect conditions at other places What is Geography? Misconceptions of geography: Merely memorizing lists of countries and state capitals Studying rocks and soil Looking at maps and pictures of faraway places Section I History of Geography The word geography, invented by the ancient Greek scholar Eratosthenes. Geography is based on two Greek words, Geo meaning “Earth” and graphy meaning “to write”. Geography is one of the oldest human activities. An early geographic activity was as simple as a man taking a journey – deep into the jungle or desert, climbing a hill or mountain or merely crossing a river and inform his/her fellow tribesmen of what was on the other side. Today everyone uses geography in some form – drawing a map to their house, watching the weather channel and even judging migration. The Branches of Geography Physical Focus on Earth’s natural environment Landforms Water features Plants Animals Studies the processes that shape the physical environment The Branches of Geography Human Study of distribution and characteristics of the world’s people (where people live and what they do) Examines how people make and trade things that they need to survive Study where people live and work The Branches of Geography Physical Focus on Earth’s natural environment Landforms Water features Plants Animals interaction between people and the Studies the processes that shape environment the physical environment Human Study of distribution and characteristics of the world’s people (where people live and what they do) Examines how people make and trade things that they need to survive Study where people live and work Review 1. What is geography? 2. What are the branches of Geography. Explain. The Five Themes of Geography 1. Location: Where a place is. Absolute Location: The exact location on the Earth. This is determined by using the imaginary geographic grid of parallels (lines of latitude) and meridians (lines of longitude). Prime Meridian Equator Equator Section I The Five Themes of Geography 1. Location: Where a place is. Relative Location: It is merely a reference to a place by using a more familiar location. Section I The Five Themes of Geography 2. Place: "Place" refers to the human or physical characteristics of a particular location. 3. Human and environment Interaction: The study human/environment interactions to look at all the effects both positive and negative of human occupation on the environment. Section I The Five Themes of Geography 4. Movement: People, resources, products, other life forms, information and ideas move from location to location. 5. Regions: A basic unit of geographic study is the region, an area on the Earth's surface that is defined by certain similar characteristics. Section I The Six Essential Elements 1. The World in Spatial Terms: Dividing the World into manageable sizes. Continents Oceans Grids Hemispheres Artic Ocean ASIA N. America Atlantic Ocean Pacific Ocean Europe Africa Pacific Ocean Indian Ocean Australia S. America Antarctica The Six Essential Elements 2. Places and Regions: a. Places: the description of the characteristics (human or physical) of a location. Such as landforms, climate, animal life, human population. b. Regions: A number of places united that have one or more common characteristic. Rocky Mountains, tornado alley, The West Coast, The Great Plains Section I The Six Essential Elements 2. Places and Regions: Section I The Six Essential Elements 3. Physical Systems: All the physical activity of the environment. Flooding, earthquakes, mountains, rivers, volcanoes, and weather patterns. The Six Essential Elements 4. Human Systems: People are central to geography. Our activities, movements and settlements shape Earth’s surface. Farming vs ranching Migration patterns Wars Governments Religions The Six Essential Elements 5. Environment and Society: The interaction between humans and the environment. Positive and negative Flooding Farming Hurricane Katrina The Dust Bowl The Six Essential Elements 6. The uses of geography: Putting it all together. Analyzing past events to help us prevent future events. Developing transportations networks Migration Who Uses Geography Everyone! We use it by finding our way to a new place – a friend, restaurant, amusement park When we watch the news – Israel invades Lebanon Planning a vacation What to wear – shorts vs pants, jacket, sunglasses Athletes – winds, sun, rain, temperature, slope of the field Professions: Cartographers – the study of maps and mapmaking, maps are an essential part of geography Meteorology – the study of weather, forecasting Government – FBI, CIA military study countries cultures and physical characteristics Teachers – develop new geographers Section I The Hemispheres Introduction to Geography Chapter 1 Section 1 Thinking Like a Geographer Section I - Objectives Discuss how geographers look at the world Discuss and examine the tools geographers use Explain how geographers use their knowledge of the earth Geographer’s View of a Place Study the human and physical characteristics of a place Think the two (2) branches of geography Six essential elements (environment and society) History – study the pass to predict the future Eruption of volcanoes (two branches) Where to build a new store at in a town Examine issues to determine if the issue is local, nation, or global Physical characteristics Landforms – individual features of the land Water Geographer’s View of a Place Physical characteristics Six essential elements (physical systems) Eruption of volcanoes, earthquakes, hurricanes, Landforms – terraces, deserts and valleys Water – why live near water Geographer’s View of a Place Why do geographers look at the physical characteristics of a place? Geographer’s View of a Place Why do geographers look at the physical characteristics of a place? Is it near water (IT) – irrigation and transportationsupport crop life and transport goods? Should we build a house in an earthquake zone? What is the annual mean temperature? Geographer’s View of a Place Human characteristics Branches of geography Six essential elements (human systems) Population density – how close do people live to one another Religious practices Government type Language spoken Economic activities Political activities Geographer’s View of a Place Why do geographers look at the human characteristics of a place Population density – where to build a housing development Religious practices – should we sell Christmas trees Government type – what type of government Language spoken – what language to put on signs Economic activities – what products to sell Geographer’s View of a Place People and Places The overlap of the branches of geography Six essential element (environment and society) Why did we choice to live here (human or physical systems) Geographer’s View of a Place How has our dependency on the environment change over time Living near water Farming Where we live Technology – make our own snow, greenhouses for farming Geographer’s View of a Place Regions Six essential element (places and regions) How places relate or differ from one another – physically and humanly Virtually every country has some type of regions Mountains Plains Urban Deserts Weather Population Economically Politically Geographer’s View of a Place Tools of Geography Maps, projections and globes Maps types – road, weather (climate and precipitation), physical, political, resources, and topographical Projections - How do geographers make these tools Technology has help Satellite images Radar (x-rays) below the surface GPS – (hardware) global positions system GIS – (software) allows geographers to gather and analyze data of a specific location – plant types and wildlife Tools of Geography Maps Maps types – road, weather (climate and precipitation), physical, political, resources, and topographical Tools of Geography Projections Used to make a global flat Map Projection Azimuthal Flat-plane Advantage Used by pilots and navigators Shows true direction, area and size Disadvantage Distorts shape Tools of Geography Projections Used to make a global flat Map Projection Cylindrical (Mercator) Advantage Used for navigation Shows true shape and direction Disadvantage exaggerates landmasses at high latitudes Tools of Geography Graphs and pyramids To illustrate detail information about specific data of a region – weather, average age, temperature Uses of geography Who uses geography? Reading a map, looking at a global How to react to a disaster Where to build new homes and their price Studying the past to predict the future From artifacts to fossils What areas flooded and why Introduction to Geography Chapter 1 Section 2 The Earth in Space Section II - Objectives Identify what makes up the solar system Describe how the Earth moves in space. Explain why Earth’s seasons change. The Solar System Section II The Solar System Solar System: The Sun, eight planets and a dwarf planet which orbit around the Sun due to gravitational pull. Uranus Pluto Jupiter Neptune Saturn Terrestrials Mars Outer Earth Inner Mercury Venus Section II The Solar System Earth like (Inner Terrestrial planet): these planets are solid and small. They have few or no moon. Additionally they rotate fairly slow. Mars Venus Mercury Earth and The Moon Section II The Solar System Four outer planets or gas giants: they are so large they collectively make up 99 percent of the mass known to orbit the Sun. Uranus – the smallest of them is 15x larger than earth. They are made up of more gas Spin rapidly Have more moons and surrounded by rocks and dust Saturn Neptune Uranus Jupiter Section II The Solar System Sun: The star at the center of our Solar System Provides the gravity for all orbiting planets Roughly 27 million degrees Planet Earth Atmosphere: Filters the Sun’s energy (in and out) Nitrogen and oxygen make the 99% of it It is organized into five layers Atmosphere Section III Types of Landforms Blizzards: Strong winds, Heavy snow, Temperatures falling below 14F . blizzard T-storm Thunderstorm: Lightning and thunder, heavy rainfall and strong winds, hail and tornadoes Tornado Tornado: a violently rotating column of air in contact with the ground, life cycle – last minutes to hours. Rating a Tornado Scale Wind Speed (MPH – estimated) Typical Damage F0 <73 Light Damage - branches broken off trees; small trees pushed over; sign boards damaged. F1 73 – 112 Moderate Damage - Peels surface off roofs; moving autos blown off roads. F2 113 - 157 Considerable Damage - Roofs torn off frame houses; large trees snapped or uprooted; cars lifted off ground. F3 158 – 206 Severe Damage - Roofs and some walls torn off houses; trains overturned; most trees in forest uprooted; heavy cars lifted off the ground and thrown. F4 207 – 260 Devastating Damage - Well-constructed houses leveled; cars thrown and large missiles generated. Rating a Tornado Scale Wind Speed (MPH – estimated) F5 260 - 318 Typical Damage Incredible Damage - Strong frame houses leveled off foundations and swept away; automobile-sized missiles fly through the air in excess of 100 meters (109 yds); trees debarked; incredible phenomena will occur. Earth’s Regions Prime Meridian N. Pole Tropic of Cancer Equator Equator Tropic of Capricorn S. Pole Section II Earth’s Regions Prime Meridian N. Pole Tropic of Cancer Tropics Equator Equator Tropic of Capricorn S. Pole Section II Earth’s Regions Prime Meridian N. Pole Tropic of Cancer Middle Tropics Equator Equator Tropic of Capricorn Middle S. Pole Section II Earth’s Regions and Sun Energy Regions Tropics Middle N. Pole and S. Pole Characteristics Receive the most intense Sun’s rays all year Generally warm region Consistent annual temperature The Sun’s rays change drastically throughout the year Temperature dependant on position of Sun Warm and cool temperature Receive the less intense Sun’s rays all year Generally cool region Consistent annual temperature Section II Earth’s Regions and Sun Energy Why?!?!?!?! Section II Earth’s Regions and Sun Energy Tilt – The Earth is tilted on an axis of 23.5 degrees The North Pole always points to the same point in the Solar System Causes daylight and darkness hours to change from the Northern to Southern Hemispheres Causes the Sun’s Rays intensity to change, which influences the temperature during the seasons Rotation One complete rotation around the Earths axis, 24 hours Direction West – to – East Causes daytime and nighttime in the Western and Eastern Hemispheres Section II Earth’s Regions and Sun Energy Section II Earth’s Regions and Sun Energy Revolution The elliptical path the Earth orbits around the Sun – Counter clock wise Time for one revolution around the Sun, 365 ¼ (causes the leap year Causes the seasons – winter, fall, summer and spring Section II Earth’s Seasons Section II Earth’s Seasons Section II Earth’s Tilt Section II Earth’s Tilt Section II Earth’s Tilt Section II Northern Hemisphere Sun’s Rays Tilt Season Hours of Daylight Solstice / equinox Position of the Sun Southern Hemisphere Seasonal Changes Date Sun Position Sun rays (Hemisphere) Day Light March Equinox March 21 Equator Equal to North and Southern 12 hrs poles December Solstice December 21 Tropic of Capricorn Southern 24 darkness N pole 24 daylight S pole September Equinox September 22 Equator Equal to North and Southern 12 hrs poles June Solstice June 21 Tropic of Cancer Northern 24 daylight N pole 24 darkness S pole Introduction to Geography Chapter 1 Section III Forces Shaping the Earth Section III - Objectives Describe and Identify the layers found in the Earth Discuss the forces that change the Earth’s surface Geosphere Inside the Earth Mantle Core Crust Geosphere Geosphere: The solid part of Earth, which is made mostly of rock and non-rock material. – Crust, mantle and core Core: Inner most part of the Earth Inner core: inner most layer, solid, temp >9,000 °F Outer core: hot metals, liquid 4,000 to 9,000 °F Mantle: located directly under the crust, largest layer - 1800 miles thick, very hot dense rock, flows like asphalt under a heavy weight. Asthenosphere: "soft" zone in the upper mantle, involved in plate movements. Lithosphere: solid outermost shell of a rocky material which includes the crust and the uppermost layer of the mantle. Crust: outermost layer of the Earth’s geosphere, part of the lithosphere Geosphere Section IV Inside the Earth Inner Core Outer Core Inside the Earth Core Inner Core Outer Core Inside the Earth Core Inner Core Outer Core Mantle Crust Inside the Earth Liquid Solid Liquid Solid Inside the Earth Liquid = magma Solid Liquid Solid The Continents Pangaea: The theory that all of Earth's continents were connected into one huge landmass - super-continent - was surrounded by one gigantic ocean called Panthalassa. Keys to the theory: Antarctica far north of its current position Australia flipped sideways and far west of its current position The subcontinent of India hundreds of miles from Asia North American continent was located much farther south and east of it's position today. The Continents The Continents Mediterranean The Continents The Continents Plate Tectonics Plate Tectonics Three types of plate boundaries exist, characterized by the way the plates move relative to each other: Transform boundary: occur where plates slide or grind past each Converging boundary: occur where two plates slide towards each subduction zone: one plate moves underneath the other collision: two plates contain continental crust and collide into one another. Diverging boundary: two plates sliding apart from each other, examples mid-ocean ridges Forces Shaping landforms Weathering: No movement Freeze/thaw – water and ice Thermal expansion – heating and cooling Pressure – big feet walking on it Chemicals – acid in the atmosphere Forces Shaping landforms Erosion: Movement Wind – blowing sand, wind gaps in mountains Water – rivers flooding, mudslides, deltas Ice – glacier Geosphere Natural Disasters Volcanoes: is a rupture in the Earth's crust, allowing hot, usually molten rock, ash, and gases escape. Earthquakes: the shifting of the plates that resulting in shacking felt on the Earth’s surface. Tsunamis: a series of waves usually caused by a ocean floor earthquake Introduction to Geography Chapter 1 Section IV Landforms and Waterways Section II - Objectives Describe and identify the Earth’s major landforms Explain how landforms affect where people live Plate Movement Continental shelves: the portion of the continental plate that extends out into the ocean. Section IV Geosphere Section III Types of Landforms Mountains: is a landform that extends above the surrounding terrain in a limited area. Rocky Mountains Himalayas Types of Landforms Plateau: large highland, level land, separated from surrounding land by steep slopes Plateau Plain Plain: large flat area of land, very suitable for farming Valley: typically a low-lying area of land, surrounded by mountains or hills. It can also be seen as a path between two mountains. Valley Types of Landforms Canyon (gorge): deep valley between cliffs often carved from the Earth by a river - a process of long-time erosion Canyon Canyon Desert: landscape or region that receives very little precipitation. Desert Desert Types of Landforms Delta: landform at the mouth of a river that flows into an ocean, sea, or lake, building outwards from sediment carried by the river and deposited as the water current is dissipated. Delta Delta Island: is any piece of land that is completely surrounded by water. Island Island Types of Landforms Peninsula: surrounded by water on three sides. Delta Isthmus Isthmus: narrow strip of land that is bordered on two sides by water and connects two larger land masses. Strait and Channel: narrow body of water that connects two larger bodies of water, man-made or natural Strait Delta Introduction to Geography Test Tomorrow!! Good Luck Timeline http://worldatlas.com/aatlas/imageg.htm http://www.infoplease.com/atlas/index.html http://teacher.scholastic.com/activities/wwatch/volcanoes/ http://www.lib.utexas.edu/maps/china.html http://www.plcmc.org/forkids/mow/continent.asp?continent=Europe http://www.sitesatlas.com/Maps/Maps/Europe.htm http://www.tapestryofgrace.com/Year%204/Y4_geography.htm