Glacial Erosion, Erosional Landforms and Sediment Transport
Glacial Depositional Landforms and Sediment
100
What is the interediate stage between snow and glacier ice? Give both names.
Firn or neve.
100
What kind of shape is a piedmont glacier?
A bulb like shape.
100
How many erosional landforms did we go over?
4
100
What is a drumlin shaped like?
An upside down spoon.
200
Describe Mass Balance.
Mass Balance is when you measure the amount of snow accumulated, then later measuring the amount of snow melted, and the difference between the two is the mass balance.
200
What two places are ice sheets restricted to?
Antarctica and Greenland
200
What is an arete?
They are thin, almost knife - like, ridges of rocks that are formed when there are two parallel U-shaped valleys.
200
True or False: Till is directly deposited by a glacier.
True
300
Name the 4 stages that occur before glacier ice occurs. (I need 4 names, not descriptions.)
Snow Flakes, Granular Snow, Firn, Glacier Ice
300
In tidewater glaciers, the leading edge of the glacier is lifted up and forms a what?
A cliff of ice.
300
Describe the process of plucking.
Plucking is melt water from a glacier freezes around lumps of cracked and broken rock. When it moves downhill, it plucks rock from the back wall.
300
What is an esker made of?
Sand and Gravel
400
Describe how a glacier is formed.
Snow falls, and as more and more falls, the layer of the snow on the bottom becomes dense and as it becomes denser, it becomes glacier ice.
400
Is a cirque glacier longer than it is wide, or wider than it is long, or did we never talk about this?
Wider than it is long.
400
What are kettles?
Kettles are small lakes that are put in bunches.
400
What is a kame made of?
Sand and Till
500
How dense is a firn? (I don't need numbers, but we went over this in the powerpoint.)
Half as dense as water.
500
How many types of glaciers have we gone over???
7
500
How are glacial striations created? (Hint: I am not asking what it is: I am asking how it is created.)
When the rock embedded in the glacier makes long scratches on the ground because it is sticking out of the bottom of the glacier.
500
What is an esker? Don't forget to mention what it is made of?