Ryan wembridge polar enviroment.ppt
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Polar environments are typically found at the top and bottom of Earth and are characterized by harsh conditions like snow, ice, cold winds and difficult terrain. They can negatively affect the human body by drawing blood away from the skin towards the core, increasing risks of frostbite and hypothermia. Antarctica is a polar region that is even colder than the Arctic and contains the largest ice sheets. It is able to sustain some life like various penguin species that use techniques like porpoising to navigate in the icy waters and return through holes in the ice. There is debate over whether Antarctica should be classified as a desert due to its very low rainfall levels.
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Antartica by judy flores
Antarctica is the coldest, windiest, highest, driest, and iciest continent on Earth. It has an average elevation of over 8,000 feet and receives less than 2 inches of precipitation per year. Antarctica is surrounded by ocean, which prevents the moderating effect of water and contributes to its extremely cold temperatures, with recorded lows of -129°F. Several nations operate research stations staffed by scientists year-round to study the environment, climate, and wildlife such as penguins and whales. Tourists can visit Antarctica by ship for short trips during the summer.
Frigid zone
The document provides information about the Arctic and Antarctic regions, including:
1) The Arctic has multiple definitions based on location north of the Arctic Circle or 60° north latitude, while the Antarctic is defined as south of 60° south latitude or the continent of Antarctica.
2) Polar regions have a polar climate with extremely cold temperatures due to receiving less intense solar radiation and axial tilt of the Earth directing the least sunlight to the poles.
3) The midnight sun phenomenon causes the sun to remain visible at midnight during summer months in areas within and near the Arctic and Antarctic circles.
POLAR REGION
The polar regions have a polar climate characterized by lack of warm summers, with average monthly temperatures below 10°C. They cover over 20% of the Earth's surface and result in treeless tundra, glaciers, or permanent ice layers. Precipitation is also very low due to cold air's inability to hold much water vapor, with some areas receiving under 10 inches annually like subtropical deserts. Housing must be built on poles driven into the frozen permafrost ground, while inhabitants live in igloos or skin tents depending on the season.
Deserts
Deserts are defined as areas that receive less than 10 inches of rainfall per year. They cover about 1/5 of the Earth's surface and can be hot or cold, dry or icy. Deserts form due to minimal precipitation and some coastal deserts form because ocean waters are too cold to produce rain. Desert climates and ecosystems have adapted to harsh conditions with sparse but specialized plants and animals. Deserts display a variety of landforms beyond just sand dunes like mesas, inselbergs and different types of sand dunes.
Cold deserts
Cold deserts have little rainfall and low temperatures below 0°C. The two main polar regions that contain cold deserts are the Arctic and Antarctic. Animals that live in cold deserts, like polar foxes, lemmings, and reindeer, have adapted thick fur or fat to help retain heat. Vegetation is also adapted to the extreme climate and consists mainly of algae, lichens, mosses, and dwarf shrubs. Climate change is negatively impacting some cold desert regions as temperatures rise and habitats disappear.
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Glaciers are large masses of ice that form on land from compacted snow and slowly deform and flow due to their own weight. They are found on every continent except Australia and cover about 10% of Earth's land. The three largest glaciers are located in Central Asia, North America, and the Arctic Islands. Glaciers are threatened by global warming, which causes them to melt and sea levels to rise, potentially flooding coastal regions and disrupting ecosystems that depend on glacial meltwater. Reducing greenhouse gas emissions and developing alternative energy sources can help address the issues caused by melting glaciers.
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1) The Arctic has multiple definitions based on location north of the Arctic Circle or 60° north latitude, while the Antarctic is defined as south of 60° south latitude or the continent of Antarctica.
2) Polar regions have a polar climate with extremely cold temperatures due to receiving less intense solar radiation and axial tilt of the Earth directing the least sunlight to the poles.
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Cold deserts have little rainfall and low temperatures below 0°C. The two main polar regions that contain cold deserts are the Arctic and Antarctic. Animals that live in cold deserts, like polar foxes, lemmings, and reindeer, have adapted thick fur or fat to help retain heat. Vegetation is also adapted to the extreme climate and consists mainly of algae, lichens, mosses, and dwarf shrubs. Climate change is negatively impacting some cold desert regions as temperatures rise and habitats disappear.
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Glaciers are large masses of ice that form on land from compacted snow and slowly deform and flow due to their own weight. They are found on every continent except Australia and cover about 10% of Earth's land. The three largest glaciers are located in Central Asia, North America, and the Arctic Islands. Glaciers are threatened by global warming, which causes them to melt and sea levels to rise, potentially flooding coastal regions and disrupting ecosystems that depend on glacial meltwater. Reducing greenhouse gas emissions and developing alternative energy sources can help address the issues caused by melting glaciers.
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3) It also discusses frostbite, describing prevention, signs of first, second and third degree frostbite, and first aid steps like sheltering the victim and avoiding refreezing or rubbing affected areas.
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Living in Chicago, we have the joy of basking in the warm summer sun as well as experiencing the polar opposite sub-arctic temperatures with the change in season. When those temperatures plunge below freezing, frostbite can become a major health threat.
Frostbite occurs when the skin, and sometimes tissue beneath the skin, freezes due to prolonged exposure to cold temperatures.
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Climate change can be caused by both human and natural factors and affects the environment in several ways. It is causing glaciers to melt and recede. Warmer temperatures allow pine beetles to destroy more forests as they can survive winters and move further north. Valuable Antarctic and Arctic habitats are threatened as temperatures rise. Rising sea levels from melting ice could flood coastal areas, causing deaths, land loss, and environmental damage. Individual actions like reducing carbon emissions, recycling, and conserving energy can help address climate change.
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Glaciers are melting rapidly due to climate change, threatening water supplies. The Himalayas contain the largest store of glacial ice outside the poles and supply water to over 2 billion people. As glaciers melt, initial floods will be followed by water shortages. Regions heavily dependent on glacial meltwater for agriculture, like parts of South America, are particularly at risk. Wildlife is also threatened by habitat loss as glaciers recede. Water harvesting techniques are helping high-altitude communities adapt to less predictable water availability.
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The document identifies and describes the five major climate zones on Earth: tropical, temperate, polar, dry, and highland/mountain. Tropical climates occur near the equator and are characterized by warm, rainy weather year-round with temperatures around 80°F. Temperate climates occur in middle latitudes and have distinct seasons, with warm summers and cold, snowy winters. Polar climates are located near the poles and have extremely cold weather year-round. Dry and highland climates can occur in many latitudes and depend on elevation, with temperatures and plant life varying with altitude.
Hist 141 the little ice age
The Little Ice Age was a period of global cooling between the 14th and 19th centuries when glaciers expanded and temperatures dropped approximately 2-3 degrees Celsius. Multiple factors contributed to this cooling, including reduced solar activity, melting glaciers disrupting ocean currents, and increased volcanic activity. The effects of the Little Ice Age included crop failures, migration of populations, and innovations like the violin that arose from the unique conditions.
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This document discusses different types of natural landscapes and their climates. It describes equatorial rainforests, which have consistent hot temperatures and high rainfall. Tropical savannahs are open grasslands with scattered trees, found in Africa. Deserts have very little precipitation and vegetation is scarce. Mediterranean landscapes have hot, dry summers and mild, wet winters. Polar landscapes are the coldest on Earth with little precipitation falling as snow. Mountain landscapes have vegetation and climates that vary with altitude.
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Living in Chicago, we have the joy of basking in the warm summer sun as well as experiencing the polar opposite sub-arctic temperatures with the change in season. When those temperatures plunge below freezing, frostbite can become a major health threat.
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Similar to Ryan wembridge polar enviroment.ppt
Kyle
Antarctica is the southernmost continent, surrounded by the Southern Ocean. It contains over 90% of the world's ice and if this ice melted, sea levels would rise by over 60 meters. Antarctica has a very cold climate with temperatures reaching as low as -89.6 degrees Celsius. While there is little permanent human habitation, various animals like penguins, seals and whales live in Antarctica. Scientists from different countries conduct research in Antarctica to study climate change, geology and other topics.
Antarctica by Chloe
Antarctica has no permanent human residents but is used for scientific research. Global warming is having serious effects on Antarctica such as melting ice shelves and decreasing populations of penguins and krill. The melting ice caps and rising sea levels caused by climate change in Antarctica threaten coastal lands and could lead to food shortages and natural disasters around the world.
Antarctica.pptx
Antarctica is the coldest, windiest, and driest continent located at Earth's south pole. It is surrounded by the southern ocean and is covered in thick layers of ice, with temperatures reaching as low as -129 degrees Fahrenheit. No permanent residents live on the continent, though some scientists live and work at research stations. The only native land animals are insects, spiders, and small creatures, while the surrounding ocean is home to various seabirds, seals, whales, and penguins that have adapted to survive in Antarctica's extreme conditions. As global warming causes Antarctic ice shelves and glaciers to melt, it threatens the survival of the native wildlife and may contribute to rising sea levels worldwide.
Antartica: Flora and Fauna
The document discusses the plant life found in Antarctica. It notes that the majority of the continent is covered in ice and snow, leaving less than 1% available for plant colonization. The only two flowering plant species are Antarctic hair grass and Antarctic pearlwort. There are also approximately 100 species of mosses, 25 species of liverworts, 300-400 species of lichens, and 20 species of fungi. Lichens in particular can survive long periods of drought and absorb water from snow and ice. The sub-Antarctic islands have a more diverse flora due to their milder climate.
Habitats | Science presentation for Grade 7th by M.Hassaan Anjum
This document defines what a habitat is and describes different types of habitats including grasslands, polar, desert, mountain, temperate forest, freshwater, ocean, and rainforest habitats. It provides details about the characteristics of each habitat type and examples of animals that live in each one. The document also discusses habitat destruction as a threat and the importance of habitat conservation.
Analea Key Note
This document provides information about Antarctica. It discusses the native wildlife like penguins and seals. It describes the journey via icebreaker ship to Antarctica and notes the extreme cold. It details the geography of Antarctica, which covers over 13 million square kilometers and contains two active volcanoes. It notes that Antarctica is covered by a thick ice sheet up to 4,000 meters deep that would cause the land below to rise by over 700 meters if it melted. The document outlines some of the challenges of living in Antarctica for scientists and station crew, who must protect from sun exposure and carry out various roles to support the station.
climate-change-in-the-polar-regions-powerpoint_ver_3.ppt
Climate change is causing the polar regions to warm, melting ice caps and glaciers. This is affecting both wildlife and indigenous human populations. Animals like polar bears rely on sea ice for hunting, and are struggling as the warm season lasts longer. Indigenous Arctic peoples' traditional diets and livelihoods are also threatened as less wildlife is available due to climate impacts. Rising sea levels additionally put coastal Arctic communities at risk of flooding.
national vegetation
This document discusses different types of natural vegetation regions around the world. It describes forests, grasslands, tundra, deserts and ice sheets as the main vegetation regions. Each region is characterized by distinct plant communities that are determined by climate factors like temperature and precipitation. The document provides examples of different forest and tundra types. It also explains how lack of precipitation defines deserts and how ice sheets have no vegetation. Latitude and altitude are described as influencing regional climates and associated vegetation distribution.
Polar lands
A post about the geographical processes of the Polar Lands and the way it works, the human interaction, the biodiversity, threats and protection.
Arctic ecosystems
The document discusses the importance of Arctic ecosystems. It notes that Arctic regions provide food, fuel, fodder and potential pharmaceuticals. They also contain unique genetic material and species, and support migratory animals. Arctic sea ice hosts ice-endemic species and is an important habitat. Tundra and boreal forests are also discussed, noting the challenges of the climate and importance of adaptations for plant and animal survival.
Journey to the end.ppt
The document summarizes a journey to Antarctica as part of an educational program called Students on Ice. The program aims to foster understanding and respect for the environment by allowing students to witness firsthand how climate change is affecting glaciers and ice shelves. The writer describes Antarctica as the windiest, coldest, and driest continent, home to 90% of the world's ice. Visiting Antarctica provides insight into Earth's history and climate, as well as a chance to appreciate the fragile balance of the planet. The experience highlights the human impact on climate change and importance of environmental protection.
Weather
The document summarizes key information about weather and climate, including their definitions and what causes each. Weather is defined as the short-term atmospheric conditions including temperature, precipitation and other factors, while climate is the average weather pattern over a 30-year period for a specific region. Weather changes are caused by winds and storms, while seasonal changes are due to the Earth's orbit around the sun. Differences in temperatures between the equator and poles create global wind and ocean currents that redistribute heat energy across the planet.
Hydrosphere
The document discusses the hydrosphere, which is the total amount of water on Earth including oceans, ice, freshwater, and water vapor. It describes the major components of the hydrosphere like oceans, glaciers, freshwater, and atmospheric water vapor. Tables provide data on the volumes and percentages of total water contained in oceans, ice, underground aquifers, lakes, and the atmosphere. The document also outlines the different zones of the oceans from the epipelagic zone at the surface to the deepest hadalpelagic zone, and notes some characteristic animals found in each zone.
Human Impact on Alaskan Tundra (1).pptx
The document provides information about the tundra ecosystem in Alaska and the human impact on it. It defines tundra as an area where tree growth is limited by low temperatures and short growing seasons. There are three main types of tundra: Arctic, Antarctic, and alpine. The document then discusses several human impacts on the Alaskan tundra, including global warming, oil drilling, overdevelopment, and air pollution. It notes that human impact has generally not been positive as the tundra is a delicate environment. The causes of the tundra ecosystem are described as the lack of trees, cold temperatures, short seasons, low precipitation, and strong winds.
Savanna Biome
The document provides information about the savanna biome, including the types of plants and animals that live there. It describes the seasons, with a long dry season in the winter and a wet season in the summer. It notes that the savanna has grasslands, mountains, streams, and a variety of predators and prey species such as zebras, lions, and cheetahs. Life for animals is described as difficult due to predators hunting for food and the threat of families being killed.
Global warming
Global warming is caused by greenhouse gases trapping heat in the atmosphere, causing the planet to warm. This is already causing effects like rising sea levels, stronger storms, and species extinction. As temperatures continue rising, even more severe consequences are expected, like widespread food and water shortages. To address this, people are advocating for solutions like clean energy and reducing pollution, while governments pass laws and regulations to limit greenhouse gas emissions.
Sub tropical deserts
This document provides information about subtropical deserts. It begins with an introduction that defines subtropical deserts and their location between 15-30 degrees north and south latitude. It then covers the physical characteristics of subtropical deserts, including their warm temperatures and low precipitation. The document discusses adaptations of plants and animals to the harsh desert environment, including adaptations like waxy coatings and nocturnal behavior. It provides examples of worldwide locations of subtropical deserts and describes the plant and animal life commonly found in these deserts, including cacti, foxes and kangaroo rats. It concludes with an overview of the food web in subtropical desert ecosystems.
Blake's Powerpoint
The document summarizes key information about Antarctica:
1) Antarctica is the coldest, windiest, and driest continent on Earth and holds about 3/4 of the world's fresh water. 2) Three famous early explorers of Antarctica were Roald Amundsen, Ernest Shackleton, and Robert Falcon Scott. 3) Antarctica's wildlife includes killer whales, seals, penguins, krill, and plankton but few plant species due to the extreme climate.
CLIMATE TIPPING POINTS In the Anthrocene Period
Climate experts have identified 9 tipping points in the climate system that could trigger sudden catastrophic changes if crossed, including melting of Arctic sea ice and collapse of the Greenland and West Antarctic ice sheets. These tipping points would have severe consequences like significant sea level rise. Some tipping points like Arctic sea ice melting may already have been passed. Public perception that climate change threats are distant or only impact nature reduces chances of preventing tipping points from being crossed, though Americans produce a large portion of emissions. Shifting human perception from denial to responsibility is critical to triggering an ultimate tipping point of climate action.
How can changes in an environment affect living
There are many changes that can occur in an environment, such as natural disasters like droughts and floods, or diseases. These changes can affect living organisms in different ways - some are able to migrate to find a new habitat, others can adjust to survive, but some cannot adapt and end up dying. Common natural disasters that can degrade habitats include droughts, which dry rivers and soil, and floods, which can wash away plants and soil.
Similar to Ryan wembridge polar enviroment.ppt (20)
Habitats | Science presentation for Grade 7th by M.Hassaan Anjum
Habitats | Science presentation for Grade 7th by M.Hassaan Anjum
climate-change-in-the-polar-regions-powerpoint_ver_3.ppt
climate-change-in-the-polar-regions-powerpoint_ver_3.ppt
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