Dynamic planet
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A nifty little presentation naming the types of glaciers... *An ice sheet is also called a continental glacier. MADE FOR SCIENCE OLYMPIAD (Dynamic Planet) 2012-2013
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Dynamic planet revision 2016
This document provides guidance and questions for an exam on dynamic planet systems. It outlines that students should answer questions 1-4, 6, and 7, focusing on topics like restless earth, climate change, impacts on biospheres and rainforests, water systems, river processes and pressures, and threats facing oceans. Questions include explaining why some volcanoes/earthquakes have greater impacts, primary and secondary effects of volcanic eruptions, reasons climate change predictions are difficult, managing tensions between development and conservation, and disagreements over ocean resource management.
Glaciers
The document describes glaciers and periglacial landforms and processes. It defines different types of glaciers and explains glacial processes like formation, movement, erosion, transportation and deposition. This creates landforms like moraines, drumlins and eskers. Periglacial landscapes lacking glacial ice are also described, featuring permafrost and patterned ground. The Pleistocene epoch is summarized, noting continental glaciation, sea level changes, and paleoclimate studies of past climate variations.
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This document provides an overview of glaciers, including their formation, movement, and important terminology. It describes the key parts of a glacier, including the accumulation and ablation zones. The document also discusses different types of glaciers and their varying speeds of movement. Finally, it covers the erosional and depositional landforms created by glaciers, such as moraines, eskers, and drumlins.
Glaciers
1. Glaciers are thick masses of ice that slowly flow downhill under their own weight. They help shape landscapes through erosion and deposition. The two main types are valley glaciers and ice sheets. Greenland and Antarctica have massive ice sheets.
2. Glaciers move via plastic flow and basal sliding. They accumulate ice in the accumulation zone and lose ice in the ablation zone, through melting and calving of icebergs.
3. Glaciers erode bedrock through plucking and abrasion, grinding rock into fine flour-like sediment.
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Glaciers are thick masses of ice that form from accumulated snowfall and flow downhill under their own weight. There are four main types of glaciers: valley glaciers, piedmont glaciers, ice caps, and ice sheets. Glaciers erode and transport sediment, forming characteristic landforms such as cirques, horns, and moraines through processes like plucking, abrasion, and scouring. As glaciers advance and retreat in response to climate changes, they leave behind deposits of till and stratified drift that create landforms like kettle lakes, outwash plains, and loess deposits. Evidence such as glacial erosion features, pluvial lakes, changing sea levels, and crustal re
Glaciers
Glaciers form when snow does not melt completely each summer and layers of snow are compressed into ice over many years. Glaciers contain ice, snow, water, rocks, and sediments, making the ice appear dirty. Though glaciers look solid, they slowly move due to pressure from their own weight, deforming and flowing over the landscape aided by meltwater at their base. Meltwater streams carry debris from the glacier which is deposited elsewhere by rivers and lakes. Some glaciers reach the ocean, forming ice shelves or breaking off into large icebergs. Moraines of deposited sediment form along the edges and fronts of glaciers. There are different types of glaciers including alpine glaciers in mountain cirques
Landforms associated with Glacier
Glacial landforms include erosional features like U-shaped valleys, hanging valleys, cirques, and arêtes, as well as depositional landforms like moraines, drumlins, eskers, and outwash plains. Glaciers erode through abrasion and plucking, forming characteristic steep-walled, flat-bottomed valleys. Cirques form at the head of valley glaciers. Depositional features include moraines of debris deposited or pushed along the sides and end of the glacier, as well as fluvio-glacial landforms formed by meltwater streams like eskers, kames, and outwash plains.
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Glacial ice is the largest reservoir of freshwater on Earth and supports one third of the world's population. Glaciers form on land where snow accumulation exceeds melting. They slowly deform and flow due to their own weight, creating features like crevasses. Glaciers erode the underlying landscape through abrasion and plucking of rock debris. As they carry this debris and later melt, glaciers leave behind landforms such as moraines, eskers, and drumlins that provide evidence of past glacial activity. Glacial periods within ice ages are marked by colder temperatures and advancing glaciers, while interglacials are warmer intervals between them.
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The document describes glaciers and periglacial landforms and processes. It defines different types of glaciers and explains glacial processes like formation, movement, erosion, transportation and deposition. This creates landforms like moraines, drumlins and eskers. Periglacial landscapes lacking glacial ice are also described, featuring permafrost and patterned ground. The Pleistocene epoch is summarized, noting continental glaciation, sea level changes, and paleoclimate studies of past climate variations.
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This document provides an overview of glaciers, including their formation, movement, and important terminology. It describes the key parts of a glacier, including the accumulation and ablation zones. The document also discusses different types of glaciers and their varying speeds of movement. Finally, it covers the erosional and depositional landforms created by glaciers, such as moraines, eskers, and drumlins.
Glaciers
1. Glaciers are thick masses of ice that slowly flow downhill under their own weight. They help shape landscapes through erosion and deposition. The two main types are valley glaciers and ice sheets. Greenland and Antarctica have massive ice sheets.
2. Glaciers move via plastic flow and basal sliding. They accumulate ice in the accumulation zone and lose ice in the ablation zone, through melting and calving of icebergs.
3. Glaciers erode bedrock through plucking and abrasion, grinding rock into fine flour-like sediment.
Ch. 11 - Glaciers
Glaciers are thick masses of ice that form from accumulated snowfall and flow downhill under their own weight. There are four main types of glaciers: valley glaciers, piedmont glaciers, ice caps, and ice sheets. Glaciers erode and transport sediment, forming characteristic landforms such as cirques, horns, and moraines through processes like plucking, abrasion, and scouring. As glaciers advance and retreat in response to climate changes, they leave behind deposits of till and stratified drift that create landforms like kettle lakes, outwash plains, and loess deposits. Evidence such as glacial erosion features, pluvial lakes, changing sea levels, and crustal re
Glaciers
Glaciers form when snow does not melt completely each summer and layers of snow are compressed into ice over many years. Glaciers contain ice, snow, water, rocks, and sediments, making the ice appear dirty. Though glaciers look solid, they slowly move due to pressure from their own weight, deforming and flowing over the landscape aided by meltwater at their base. Meltwater streams carry debris from the glacier which is deposited elsewhere by rivers and lakes. Some glaciers reach the ocean, forming ice shelves or breaking off into large icebergs. Moraines of deposited sediment form along the edges and fronts of glaciers. There are different types of glaciers including alpine glaciers in mountain cirques
Landforms associated with Glacier
Glacial landforms include erosional features like U-shaped valleys, hanging valleys, cirques, and arêtes, as well as depositional landforms like moraines, drumlins, eskers, and outwash plains. Glaciers erode through abrasion and plucking, forming characteristic steep-walled, flat-bottomed valleys. Cirques form at the head of valley glaciers. Depositional features include moraines of debris deposited or pushed along the sides and end of the glacier, as well as fluvio-glacial landforms formed by meltwater streams like eskers, kames, and outwash plains.
Glacial ice powerpoint
Glacial ice is the largest reservoir of freshwater on Earth and supports one third of the world's population. Glaciers form on land where snow accumulation exceeds melting. They slowly deform and flow due to their own weight, creating features like crevasses. Glaciers erode the underlying landscape through abrasion and plucking of rock debris. As they carry this debris and later melt, glaciers leave behind landforms such as moraines, eskers, and drumlins that provide evidence of past glacial activity. Glacial periods within ice ages are marked by colder temperatures and advancing glaciers, while interglacials are warmer intervals between them.
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- The approximate areas covered by glaciers worldwide are provided, totaling nearly 15 million square kilometers, with over half of that in Antarctica and Greenland.
- Glaciers are classified by their location and behavior, such as ice sheets, ice caps, valley glaciers, and tidewater glaciers.
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This document summarizes key aspects of glacial environments and glacial landforms. It describes how snow accumulates over time to form glacial ice, and the different zones within glaciers. It also discusses the two main types of glaciers - mountain/alpine glaciers and continental ice sheets - and how they form and move. The document outlines various erosional landforms created by glaciers such as cirques, arêtes, and U-shaped valleys. It also describes depositional features including moraines, eskers, kames, and drumlins. In summary, the document provides an overview of glacial formation, movement, erosion processes, and resulting landforms.
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Glaciation in upland areas has created landforms like corries, arêtes, and pyramidal peaks through freeze-thaw weathering and erosion by glaciers. Glaciers carved out U-shaped valleys and left behind landforms like hanging valleys, truncated spurs, and ribbon lakes. Glacial deposition formed features such as drumlins, moraines, and boulder clay. Upland glaciated areas are used for marginal farming, forestry, and tourism, but management is needed to address issues from overuse, like erosion, and conflicts between different user groups.
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Glaciation in upland areas has created landforms like corries, arêtes, and pyramidal peaks through freeze-thaw weathering and erosion by glaciers. Glaciers carved out U-shaped valleys and left behind landforms like hanging valleys, truncated spurs, and ribbon lakes. Glacial deposition formed features such as drumlins, moraines, and boulder clay. Upland glaciated areas are used for marginal farming, forestry, and tourism, but management is needed to address issues from overuse, like erosion, and conflicts between different user groups.
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Glaciers are sensitive indicators of climate change as they advance and retreat in response to temperature fluctuations. In the past, during the Pleistocene epoch, ice coverage was around 3 times greater than today. The largest ice sheets were located in Antarctica, Greenland, North America, and Scandinavia. Glaciers exist in both polar and mountainous regions due to factors like latitude, which influences solar radiation levels, and altitude, which impacts temperature through the environmental lapse rate. Ice can be classified by size, location, and degree of constraint into different types such as ice sheets, ice caps, valley glaciers, and cirque glaciers.
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Glaciers are large, long-lasting masses of ice that form on land and move downhill due to gravity. They are part of Earth's hydrosphere and contain about 75% of the fresh water on the planet. Glaciers erode the underlying rock surface through plucking and abrasion, creating characteristic U-shaped valleys and other erosional landscapes. As they move, glaciers also deposit unsorted sediment in the form of moraines, till, and outwash plains.
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Glacial processes and their land forms.
Glaciers are masses of ice that move due to gravity. They erode the landscape through abrasion and plucking, and transport material large distances. Glaciers deposit this material as till or outwash. Glacial processes form characteristic landforms such as cirques, arêtes, and u-shaped valleys through erosion and landforms like moraines and eskers through deposition. Glacial lakes are also left behind when a glacier melts.
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1. Ice distribution on Earth has changed over time and varies based on factors like latitude, altitude, and local climate conditions.
2. There are different types of ice masses including ice sheets, ice caps, glaciers, and ice shelves, which vary in size and location.
3. During the last ice age, ice cover was much more extensive, with large ice sheets covering North America and Europe that profoundly shaped the landscape as they advanced and retreated.
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in this presentation I will discus about the glacier, different type of glacier, formation of glacier and its movement from height toward lower area and supply water to our rivers
slide 4.ppt
1. Glaciers are large, long-lasting masses of ice that form on land and move downhill due to gravity. They are part of Earth's hydrosphere and cryosphere.
2. Glaciers erode the underlying landscape through plucking and abrasion, forming features like U-shaped valleys, cirques, and arêtes. They deposit unsorted sediment in the form of moraines, outwash plains, and other landforms.
3. Past glaciation, such as the most recent ice age, had significant direct and indirect impacts on North America including stripping soil and sediment, excavating lake basins, and forming recessional moraine sets and flood features. Evidence of even older
Chapter 12 graphics- glaciers (1) [Autosaved].ppt
a long, narrow inlet with steep sides or cliffs, created by a glacier.Fjords
ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain ...Nunatak
Periglacial' describes a landscape that undergoes seasonal freezing and thawing, typically on the fringes of past and present glaciated regions.
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Glaciers are giant blocks of snow and ice that form over thousands of years in areas that receive snowfall year-round. As layers of snow accumulate and melt, the melted snow refreezes into layers of ice that build up and compress to form glaciers. Glaciers can be found on every continent except Australia, usually in polar or mountainous regions, and they move slowly due to the force of gravity pulling on melted ice at their edges.
What are fluvioglacial processes?
Here is a 4 mark labelled sketch of an esker:
[SKETCH OF AN ESKER]:
- Sinuous ridge
- Coarse gravel and sand
- Stratified layers
- 5-20m high
Eskers form through the process of subglacial deposition:
Meltwater flows through tunnels beneath the glacier. As it flows, it deposits material in the tunnel. Coarser material is deposited first, creating layers. As the glacier melts away, it leaves behind the sinuous ridge of stratified sand and gravel - the esker. The tunnel walls confined the meltwater flow and pressure, allowing transport and deposition of material.
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- The approximate areas covered by glaciers worldwide are provided, totaling nearly 15 million square kilometers, with over half of that in Antarctica and Greenland.
- Glaciers are classified by their location and behavior, such as ice sheets, ice caps, valley glaciers, and tidewater glaciers.
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This document summarizes key aspects of glacial environments and glacial landforms. It describes how snow accumulates over time to form glacial ice, and the different zones within glaciers. It also discusses the two main types of glaciers - mountain/alpine glaciers and continental ice sheets - and how they form and move. The document outlines various erosional landforms created by glaciers such as cirques, arêtes, and U-shaped valleys. It also describes depositional features including moraines, eskers, kames, and drumlins. In summary, the document provides an overview of glacial formation, movement, erosion processes, and resulting landforms.
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Meaning and formation of glaciers along with their impact and interaction with the environment such as erosion, transportation and deposition.
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Glaciers form in two main types: valley glaciers, which are confined to mountain valleys, and ice sheets, which are enormous ice masses that flow outward from centers. Glaciers move via plastic flow and basal slip, with the weight and pressure of the overlying ice causing slow movement. Glaciers leave behind various types of glacial drift as they recede, including till deposited directly and stratified drift laid down by meltwater. Glaciers sculpt the landscape, forming U-shaped valleys and features like cirques, aretes, and horns.
Revision Document - Glaciation
Glaciation in upland areas has created landforms like corries, arêtes, and pyramidal peaks through freeze-thaw weathering and erosion by glaciers. Glaciers carved out U-shaped valleys and left behind landforms like hanging valleys, truncated spurs, and ribbon lakes. Glacial deposition formed features such as drumlins, moraines, and boulder clay. Upland glaciated areas are used for marginal farming, forestry, and tourism, but management is needed to address issues from overuse, like erosion, and conflicts between different user groups.
Revision Document - Glaciation
Glaciation in upland areas has created landforms like corries, arêtes, and pyramidal peaks through freeze-thaw weathering and erosion by glaciers. Glaciers carved out U-shaped valleys and left behind landforms like hanging valleys, truncated spurs, and ribbon lakes. Glacial deposition formed features such as drumlins, moraines, and boulder clay. Upland glaciated areas are used for marginal farming, forestry, and tourism, but management is needed to address issues from overuse, like erosion, and conflicts between different user groups.
Lesson 2 past and present distribution of ice
Glaciers are sensitive indicators of climate change as they advance and retreat in response to temperature fluctuations. In the past, during the Pleistocene epoch, ice coverage was around 3 times greater than today. The largest ice sheets were located in Antarctica, Greenland, North America, and Scandinavia. Glaciers exist in both polar and mountainous regions due to factors like latitude, which influences solar radiation levels, and altitude, which impacts temperature through the environmental lapse rate. Ice can be classified by size, location, and degree of constraint into different types such as ice sheets, ice caps, valley glaciers, and cirque glaciers.
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The document discusses different types of mountains through examples like the Rocky Mountains and Appalachian Mountains. It notes that while the Rocky Mountains have steep, jagged peaks, the Appalachians have been worn down over time and are rounded with trees growing all the way to their tops. It also provides details on mountain ranges, valleys, glaciers, and volcanoes, mentioning Mount Everest and Mount St. Helens.
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Glaciers are large, long-lasting masses of ice that form on land and move downhill due to gravity. They are part of Earth's hydrosphere and contain about 75% of the fresh water on the planet. Glaciers erode the underlying rock surface through plucking and abrasion, creating characteristic U-shaped valleys and other erosional landscapes. As they move, glaciers also deposit unsorted sediment in the form of moraines, till, and outwash plains.
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The document discusses the various geographic features of the United States, including its mountain ranges, coastal plains, climate regions, and water features. It describes the Pacific region's mountainous terrain with volcanic peaks, the Interior West's basins and ranges, the Appalachian Mountains, and the Interior Lowlands. The climate is influenced by latitude, altitude, ocean currents, and proximity to water. Natural resources provide benefits but also challenges from hazards.
Glacial processes and their land forms.
Glaciers are masses of ice that move due to gravity. They erode the landscape through abrasion and plucking, and transport material large distances. Glaciers deposit this material as till or outwash. Glacial processes form characteristic landforms such as cirques, arêtes, and u-shaped valleys through erosion and landforms like moraines and eskers through deposition. Glacial lakes are also left behind when a glacier melts.
Past and Present Distribution of Ice
1. Ice distribution on Earth has changed over time and varies based on factors like latitude, altitude, and local climate conditions.
2. There are different types of ice masses including ice sheets, ice caps, glaciers, and ice shelves, which vary in size and location.
3. During the last ice age, ice cover was much more extensive, with large ice sheets covering North America and Europe that profoundly shaped the landscape as they advanced and retreated.
What is a glacier
in this presentation I will discus about the glacier, different type of glacier, formation of glacier and its movement from height toward lower area and supply water to our rivers
slide 4.ppt
1. Glaciers are large, long-lasting masses of ice that form on land and move downhill due to gravity. They are part of Earth's hydrosphere and cryosphere.
2. Glaciers erode the underlying landscape through plucking and abrasion, forming features like U-shaped valleys, cirques, and arêtes. They deposit unsorted sediment in the form of moraines, outwash plains, and other landforms.
3. Past glaciation, such as the most recent ice age, had significant direct and indirect impacts on North America including stripping soil and sediment, excavating lake basins, and forming recessional moraine sets and flood features. Evidence of even older
Chapter 12 graphics- glaciers (1) [Autosaved].ppt
a long, narrow inlet with steep sides or cliffs, created by a glacier.Fjords
ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain ...Nunatak
Periglacial' describes a landscape that undergoes seasonal freezing and thawing, typically on the fringes of past and present glaciated regions.
Glaciers AyRo
Glaciers are giant blocks of snow and ice that form over thousands of years in areas that receive snowfall year-round. As layers of snow accumulate and melt, the melted snow refreezes into layers of ice that build up and compress to form glaciers. Glaciers can be found on every continent except Australia, usually in polar or mountainous regions, and they move slowly due to the force of gravity pulling on melted ice at their edges.
What are fluvioglacial processes?
Here is a 4 mark labelled sketch of an esker:
[SKETCH OF AN ESKER]:
- Sinuous ridge
- Coarse gravel and sand
- Stratified layers
- 5-20m high
Eskers form through the process of subglacial deposition:
Meltwater flows through tunnels beneath the glacier. As it flows, it deposits material in the tunnel. Coarser material is deposited first, creating layers. As the glacier melts away, it leaves behind the sinuous ridge of stratified sand and gravel - the esker. The tunnel walls confined the meltwater flow and pressure, allowing transport and deposition of material.
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Dynamic planet
- 2. http://nsidc.org/cryospher e/glaciers/questions/types .html Thanks to Rachel Richards for sharing this link!
- 3. Ice Sheets Large sheets of ice expanding over 50,000 kilometers Antarctica & Greenland Antarctica- 4,200 meters thick ice sheet Ice sheets cover everything but Transantarctic Mountains (Antarctica)
- 4. Ice Shelves Happens when ice sheets float on water Few hundred meters – 1,000 meters Surround Antarctic continent When retreating, may show climate change
- 5. Ice Caps Miniature ice sheets < than 50,000 kilometers Polar & sub-polar regions Greenland- ice sheet Iceland- ice cap
- 6. Ice Streams Channelized glaciers that flow rapidly Many Ice streams in Antarctica
- 7. Ice Fields Smaller than ice caps Flow: underlying topography
- 8. Mountain Glaciers Flow out of ice fields Span several peaks or a whole mountain range Places: Arctic Canada, Alaska, Andes, Himalayas, Antarc tica
- 9. Valley Glaciers Come from mountain glaciers or ice fields Slide down valleys Look like giant tongues Long; flow beyond snow line May reach sea level
- 10. Piedmont Glaciers Happen when steep valley glaciers spill into flat plains Spread into bulb-like lobes Malaspina Glacier, Alaska: 5,000 square kilometers
- 11. Cirque Glaciers Named for bowl-like hollows (they live there) High mountainsides Wide
- 12. Hanging Glaciers Ice aprons Cling to steep mountainsides Wide Common in Alps- cause Avalanches
- 13. Tidewater Glaciers Flow far enough to reach out into the sea Responsible for splitting small icebergs May cause problems for shipping lanes
- 15. YOU ADD MORE INFORMATION This is just information for one link. If you see this PowerPoint and like to add more information, please do! Just remember to post it! Make sure you add a title slide with your name before you begin.