Earth Science 11 – Surface Processes and the Hydrosphere
Processes and Features of Erosion - Glaciers
Heath Earth Science - pg. 190-202
Today’s Objectives:
 Relate the processes associated with weathering and erosion to the resulting features, including:
 identify the processes (e.g., abrasion, dissolution) by which glaciers, running water, wind,
and wave action erode rock and sediment
 differentiate between erosional and depositional features formed by glaciers, running
water, wind, and wave action
Types of Erosion
 Erosion can be carried out in many different ways
 Today we will look at 4 different processes of erosion:
 1) _________ Erosion
 2) _________ ________ Erosion
 3) _______ Erosion
 4) _______ Erosion
 In addition to looking at these processes, we will also identify some ___________ created
by erosion, as well as features formed by _____________
Erosional vs. Depositional
 Erosion:
 The ________________ and _________________ of material by a _________
________, such as water, wind, or ice
 Deposition:
 The process by which materials are _________ to a __________ after being
transported by a mobile agent
Glaciers
 A glacier is a _______ ______ ____ _____ originating on land from the compaction of snow
that shows evidence of _______
 Two main kinds of glacier:
 __________ glacier (________ glacier)
 Occur in all parts of the world where mountains stretch above the _______
______
 ______________ meters long, _____________ meters thick
 ____________ glacier (_____ ________ or ____ _______)
 Occur in ________ areas where the snow line is close to sea level
 Up to ______ million km2, up to _____ km thick!
Advancing vs. Receding Glaciers
 ________________ zone: Area of glacier where accumulation __ melting
 ____________ zone: Area of glacier where melting __ accumulation
 ______ (snow) line: line where melting __ accumulation
 When the amount of snow falling in the accumulation zone is __________ than the amount
of snow melting in the ablation zone, the glacier will ___________
1/4
Earth Science 11 – Surface Processes and the Hydrosphere
 When the opposite is true, the glacier will
_________
 Advancing glaciers will create
_____________ features
 Receding glaciers will create
_________________ features
Glacial Erosion – Abrasion
 Glaciers erode the bedrock largely by using
pieces of ________ as cutting tools
 These pieces are ___________ over the bedrock
by the forward movement of the glacier, in a
process called ___________
 The scratches left behind on the rocks are called
_____________
Glacial Erosion – Plucking
 Another process of glacial erosion is ____________
 Plucking occurs when ______ __________ beneath the glacier penetrates _________ in the
bedrock, then ___________ to the rock (video)
 As the glacier moves __________, the rock is _________ from the ground
Glacial Erosional Features
 You should be able to name and recognize the
following erosional features, and how they are
formed:

2/4
Earth Science 11 – Surface Processes and the Hydrosphere
Glacial Erosional Features
Glacial Deposition
 Once a glacier begins to __________, the material from ___________, __________, or ___
______ of the glacier will be left behind
 This material will form many features called ______________ ____________
 You should be able to name and recognize the following depositional features, and how
they are formed:
3/4
Earth Science 11 – Surface Processes and the Hydrosphere
Glacial Depositional Features
Homework
 Complete the homework package that you are given!
 Due: Next class
4/4