0
Glaciers
Glaciers are large, dynamic bodies of ice that form over long periods of time when snow accumulation exceeds ice ablation. They are among the most significant forces shaping Earth's landscape over long time scales. Glaciers are currently found at Earth's poles and in mid-latitude and equatorial mountains.
1,124 Questions
What is the cause of melting glaciers?
- A rise in the temperature of the air around the glacier.
- Increasing accumulation of dust [from volcanic eruptions for one example] on the glacier's surface. The "dirtier" the the surface of the glacier's ice, the less sunlight it reflects, and the more sunlight it absorbs, increasing its surface temperature, and causing increased melting.
- Glaciers are melting because of Global Warming . The toxic chemicals that come from things like cars and factories make an attraction to the sun there for it heats up the earth . This is actually very bad because glaciers cool the atmosphere , and if they're gone the whole entire planet will heat up the a degree where nothing can live on it , and that also goes for the icebergs etc .
What is the process of glaciers when it wears away land?
The process of a glacier melting takes place over a long period of time of increased temperatures. Only increased temperatures can melt an object the size of a glacier.
glaciers move slowly but when theres alot of rain the water and the glaciers move faster
How do glaciers shapes earths surface?
Glaciers shape the Earth's surface through processes like erosion, transportation of sediments, and deposition. As glaciers move, they scrape and carve the land, creating features like valleys, fjords, and cirques. When glaciers melt, they leave behind sediment and rock formations that contribute to the landscape.
How wide is the iceberg that hit the titanic?
Icebergs are not to be confused with ice cubes. Any mass of ice will have 7/8 underwater but the glacial chunks can only be calculated vertically, not horizontally. Sources vary as to the height of the iceberg that hit Titanic but even with perfect visibility, the height may-or-may-not have any bearing.
If a glacier moved down the mountain what would happen?
Glaciers or moving, shifting and melting constantly. The worst that could happen is if too meltwater was created by the melting glacier it would cause a flood downstream.
How do you create a ice sculpture?
You start with a ice block made for carving. The standard carving block is 20"x10"x40". Most carvers use power tools such as chain saws, die grinders with custom bits, and angle grinders with custom sanding discs. They also use chisels, saws, and many other tools. The actual carving process is much like stone or wood carving, with the main difference being the ability to "fuse" or stick pieces of ice together to create a very large sculpture.
AnswerMaking those ice sculptures are not as easy as they look. There is no different than any other sculptures. Except they are "icy". AnswerOf course a big cold room and warm water.When is the best time to visit the glacier national park?
Summer, unless you enjoy TRULY dangerous weather conditions.
Most trails are not open until July, and the NPS strongly advises against hiking on a closed trail. By late September, Going to the Sun Road is closed. Thus, June can be too early and October is definitely too late for any but VERY hardy outdoorspeople.
What are some important facts about Mendenhall Glacier?
The Mendenhall Glacier is located near the capital of Alaska, Juneau. It is a short drive from the city and can be found in the Tongass National Forest.
What is the difference between glaciers ice sheets and ice fields?
valley glaciers are constrained by their surroundings. And ice sheets dont
Ice sheets are large
What is till deposited at the end of glaciers?
Till is deposited by glacial ice. Till is deposited almost exclusively in the ablation zone either by being plastered onto the underlying glacial bed by flowing ice or by sloughing off the glacier's surface as the ice melts. Till are generally unstratified and commonly consist of large rock fragments surrounded by a finer grained matrix of sand, silt, and clay.
Outwash is Sand and gravel deposited by melt water. Outwash are typicaly well sorted and stratified so they differ sharply from tills, which are unsorted and unstratified
Pyramid-shaped peaks that form when three or more cirque glaciers erode a mountain?
Look at textbook EARTH SCIENCE pg: 198-200
What type of weathering is a glacier?
it is when a glacier moves into a large rock mass, cutting its way through.
The Himalayas are one of the mountain ranges that are growing right now !!
Mountain ranges get bigger for a variety of reasons, two of these include volcanic eruptions and seismic uplift.
Some mountains are also volcanoes, when these erupt, there are several different types, they can produce molten lava as well as the ash, gas and other products. The lava then flows out from the vents or holes in the mountain and cover the mountain sides. The lava then cools down, because it is actually liquid rock at several thousand degrees celcius, and turns to hard solid rock. This then can happen over a long period of time and increase the size of the mountain.
Another way to increase the size of a mountain range is by seismic uplift, the best example of this today is the Himalayan Mountain range. The earths crust is solid but split into several different plates. These plates move very slowly over the molten magma underneath at about the speed that your finger nails grow (several centimetres a year) and the Indian Plate is pushing up against the Eurasian Plate, this squashing the rocks very slowly but with huge amounts of power and as the Eurasian Plate is moving against the Indian Plate the rock is getting pushed upwards because the crust has nowhere else to go, this created the Himalayas and they are still getting taller.
If you are still interested look up plate tectonics, continental drift and the cycle of mountain building because erosion wears away at all mountain ranges, the building is only one part of the cycle !!
Glaciers formed during the ice age when earth was so cold that water in the coldest places just became frozen mountains, called icebergs.
Why do glacial striations show the direction a glacier moved?
In the sense that it makes it known that the rock existed before a period of glaciation, yes.
Tides, sometimes called lunar tides.
You can have
- high tides
- low tides
- spring tides
- neap tides
- Proxigean spring tides
For more information see the link below
The Tidal Range, the gravitational effect of the moon on the oceans.
What can you tell about the rate of speed of different parts of the glacier?
usually you would place a couple of stakes across the glacier and over time you would see them move. so it would be the distance that the moved over the time it took. usually the stakes towards the middle will move the fastest because they are less affected by friction. you could also just clock it with a speed gun....
How much of the Lambert glacier is covered underwater?
Only 10 percent of the iceberg are above water. That means 90 percent of the iceberg are underwater.
How did glaciers affect water levels in the ocean?
Periods of glaciation cause sea levels to drop, because that water gets locked up in ice on land.
What type of mass movement caused by gravity?
Any mass moves in the direction of the vector sum of all the forces acting on it,
with an acceleration numerically equal to the magnitude of the sum of the forces
divided by its mass.
On or near the Earth's surface, gravity is always one of the forces.
