Flashcards in Glacial Landforms on Maps Deck (21)
What do you use contour lines to spot?
Aretes on a map.
What are contour lines?
Orange lines drawn all over maps.
What do contour lines tell you?
Height of the land.
Steepness of the land.
How is the height of the land shown?
By the numbers marked on them.
How is the steepness of the land shown?
By how close together the lines are.
The closer the contour lines the what?
The steeper the slope.
Where are pyramidal peaks located?
At the top.
Where are aretes located?
In the middle.
Where are Corries located with a tarn?
At the bottom.
What does an arete look like on a map?
Really thin hill.
Parallel contours on either side.
What do aretes often have?
Corries or tarns either side.
Footpaths on them with names like 'Something Edge.
Eg 'Striding Edge'.
What do corries look like on a map?
Tightly packed contour lines in a u-shape around them.
What do some corries have?
A tarn in them.
What do pyramidal peaks look like on a map?
Tightly packed contour lines that curve away from a central high point.
If you find a pyramidal peak what else will you find?
Corries and aretes around it.
You can also use maps do to what?
Spot glacial troughs and ribbon lakes.
Give an example of a glacial trough?
Nant Ffrancon in Wales.
Give an example of a ribbon lake?
Llyn Ogwen in Wales.
What are glacial troughs?
Flat valleys with very steep sides.
How are glacial troughs shown on a map?
No contour lines on the bottom of the valley.
Tightly packed contour lines on the side.