https://padlet.com/2039155/4umyxkrls1ho Bailey Wall B.7 en-us 2017-11-01 20:38:59 UTC 2025-12-05 10:10:36 UTC hello@padlet.com 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/202712051 2017-11-01 20:50:00 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/202712051 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/202712120 Sand dunes form when wind blows mass amounts of sand into a sheltered obstacle. The dunes increase in size as more grains of sand accumulate.]]> 2017-11-01 20:50:18 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/202712120 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204020125 2017-11-06 17:48:52 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204020125 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204020206 Hoodoos are formed throughout major frost wedging cycles and occur when the water expands, creating ice, and it forces cracks in the rock to expand and break off major chunks of rock.This leaves the interesting looking hoodoos.]]> 2017-11-06 17:48:59 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204020206 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204024265 2017-11-06 17:55:58 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204024265 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204026191 2017-11-06 17:59:32 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204026191 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204651005 2017-11-08 02:12:13 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204651005 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204651196 When frost wedging occurs on a large rock, it will break off pieces, large and small, of the rock that fall to the base of the rock due to gravity. The pieces of talus then gather at the base of the rock and they ]]> 2017-11-08 02:13:26 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204651196 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204651965 2017-11-08 02:18:22 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204651965 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204652364 V-shaped valleys are formed by fast moving rivers with steep gradients. The faster the river moves, the more it picks up the sediments from the bottom of the channel than the sides, which is called down cutting.]]> 2017-11-08 02:20:46 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204652364 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204654432 2017-11-08 02:32:51 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204654432 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204654449 Moving water in a stream erodes outer banks to widen it's valley. The middle portion of the river moves slowly and deposits silts. The sediments are eroded from the outside and deposited into the middle. ]]> 2017-11-08 02:32:59 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204654449 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204655547 Ox- bow lakes form after meandering streams become very curvy. The turning points the become closer, and finally narrow enough for the river to cut through during a flood and cut off the curve, which creates an ox-bow lake]]> 2017-11-08 02:41:38 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204655547 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204656014 2017-11-08 02:45:31 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204656014 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204656143 2017-11-08 02:46:29 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204656143 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204656525 Sinkholes are caused due to a collapse of a surface layer. Ground water erodes rock, typically limestone and sandstone, which creates holes underground. When the rock dissolves, caverns open up and develop underground until they open up. They stay in tact until there is not enough support, then there is a sudden collapse of the surface layer. ]]> 2017-11-08 02:49:02 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204656525 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204661047 2017-11-08 03:19:32 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204661047 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204661203 Stalagmites are formed under certain conditions and form from deposited minerals, especially calcium carbonate, that drips from  water solutions with minerals.
Stalactites are formed from a solution that travels in the rock until it reaches a cavern, it will drip down and have a chemical reaction with the air. They grow with a constant supply of the drip and but with too much drip, stalagmites are created.  ]]> 2017-11-08 03:20:37 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204661203 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204664825 Aretes occur when two glaciers erode u shaped valleys that are parallel to each other. 

Horns are formed when three or more glaciers have eroded three or more aretes to form a rigid peak. 

U shaped valleys are formed over long periods of time. As the glacier runs through the valley, it erodes the sides and usually has a river through the center. The steep sides and flat bottom look like a parabola, with sediments at the bottom. 

Cirques come from small glaciers that carve deep, circular holes due to the erosion from the glacier. 

Hanging Valleys occur because smaller glaciers erode faster than the main glacier causing there to be a cirque that the main glacier later erodes through, which causes a hanging valley.

Moraines occur when a glacier has passed through an area and left any debris, which is due to the friction of the ice mass and the rock it's on top of. ]]> 2017-11-08 03:47:18 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204664825 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204667869 2017-11-08 04:10:25 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204667869 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204669337 Vertical cliffs are eroded from underneath due to water or other erosion, depending on location, and weakens the rock layers, causing a collapse and leaving the non- eroded rock left. ]]> 2017-11-08 04:20:20 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204669337 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204672317 2017-11-08 04:46:01 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204672317 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204672328 Landslides can be caused by many things, but have a common factor of gravity. They can be triggered by eroded soil, earthquakes, and volcanic activity. ]]> 2017-11-08 04:46:07 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204672328 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204672773 2017-11-08 04:49:45 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204672773 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204672802 Flows occur when large masses of fragmented rock are mixed with water and pulled by gravity into rivers or the bottom of valleys, resulting in thick muddy deposits. ]]> 2017-11-08 04:49:59 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204672802 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204675660 Falls occur when there is a cliff or steep slope and a landslide where rocks bounce or roll down the slope and collect as debris at the bottom.]]> 2017-11-08 05:19:09 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204675660 2039155 https://padlet.com/2039155/4umyxkrls1ho/wish/204675962 2017-11-08 05:22:51 UTC https://padlet.com/2039155/4umyxkrls1ho/wish/204675962