Friction causes ice to melt, the meltwater flows into cracks, refreezes and then pulls the rock along
Define Abrasion
Rocks scraping and smoothing the surface they pass
Define Pyramidal Peak
Steep-sided pyramid-shaped mountain, eroded on all sides by a cirque
What is the term used to describe an extended period of time in history where temperatures are very low?
Ice Age
-
Name one place in Ireland where you can find a glacial valley
Glendalough
Name one country in which you can find glaciers?
-
Define Hanging Valley
A small tributary valley that hangs above the main glaciated valley
Explain how a Cirque forms
1 - Snow collects up high, it is compacted over time. 2 - Through plucking and abrasion it grows deeper. 3 - When the glacier is big enough it begins to flow
What are the two main processes that glaciers use to erode the landscape?
Plucking and Abrasion
What is the name of materials found on the surface of a glacier?
Supraglacial
What shaped valley does a glacier form?
U-shaped Valley
What is the name of materials found underneath a glacier?
Subglacial
Define Truncated Spur
an interlocking spur that has had it's 'head' removed.
Define Paternoster Lake
When ribbon lakes are intertwined they are known as paternoster lakes
Roughly how much of the Earth's surface was covered in ice during the last ice age?
1/3
What is the name of materials found on the within a glacier?
Englacial
Name one country in which you can find glaciers?
-
Define Tarn
A lake inside a cirque
Define Cirque
A large hollow on the side of a mountain
Define Arête
A narrow steep-sided ridge, usually between two cirques.
Your experience on this site will be improved by allowing cookies.