LEARNING GOAL:
WE WILL LEARN THE
MANY WAYS WHICH
EARTH'S SURFACE IS
BUILT UP AND TORN
DOWN.
Benchmark Objective: SC.6.E.6.1
Describe and give examples of ways in
which Earth's surface is built up and
torn down by physical and chemical
weathering, erosion, and deposition.
DOK: Moderate
LEARNING GOAL: WE WILL LEARN THE MANY
WAYS WHICH EARTH'S SURFACE IS BUILT UP
 LEVEL 4 = I can….
AND TORN DOWN.
 Analyze the built up and tear down of the Earth’s surface. Predict the
future appearance of the land over time.
 I can also do levels 3-2.
 LEVEL 3 = I can….
 Compare and contrast physical weathering and chemical weathering. I can
also do level 2.
 LEVEL 2 = I can….
 Determine the cause and effect of weathering and erosion.
 LEVEL 1 = I can….
 With some assistance/help, I can do some of level 2, otherwise, I am
confused and need more time.
 LEVEL 0 = I am totally lost and confused. I really need help.
WEATHERING & EROSION
What is Weathering?
 Weathering is a destructive force; it naturally
breaks rocks down into sediment.
 Two basic types of weathering:
1) mechanical
2) chemical
Chemical Weathering
 Is the changing of a rock or a mineral’s
chemical composition by natural forces.
 Rusting
For example:
 Reaction with acid
 Formation of clay
 Acid produced by plants (and animals) can
cause biological weathering.
What is Erosion?
 Erosion is the weathering of rock and the
transportation of sediment.
 Sediments are broken-down pieces of rock from
the weathering of larger rock.
For example:

Glacier

Muddy river

Clear mountain river

Wind blown sand like in sand dunes
Erosion (transport)
There are 5 main agents of erosion:
1. *Running Water*
2. Glaciers
3. Wind
Weathering has to happen before erosion. The rocks have
4. Gravity
to be broken into smaller sediments before they can be
5. Man
eroded away.
Wind Erosion
Glacier
MRS. DEGL
6
Mechanical Weathering
 Mechanical weathering is the breaking down
of rock into sediment by water, ice, or wind.
 Biological Weathering –
Another form of mechanical weathering
that break down of rocks into sediments
by plants and animals.
For example:

Moving water

Waves

Freezing water

Moving Ice (glaciers)

Wind

Plants

Animals
CHEMICAL VS. MECHANICAL
WEATHERING
Plants
Chem
Rx
New
subst
Rust
ex.
Nothing
new
Mechanical
Chemical
Change
rocks
Smaller
pieces
Wind
Ice
water
What is Deposition?
 It is the laying down of sediments (after
erosion has occurred);
 a constructive force.
What happens to sediment
after deposition?
1.
Burial
2.
Compaction
3.
Cementation
4.
Formation of new rock
Meandering (Curving) River/Stream
Deposition
happens on
the inside of
turns.
Erosion
happens on
the outside
of turns.
Sediments
are
traveling
the fastest
in the
center
directly
below the
surface.
Straight Flowing River/Stream
Running
Water
10
SHOW THE PROCESS AND ACTIONS
Destructive
Weathering
Ice Wedging
Destructive
Erosion
A river
Constructive
Deposition
Delta
DETERMINE THE CAUSE AND EFFECT OF
WEATHERING AND EROSION
Running
water
Delta
weathering
and
erosion
#1: PREDICT THE FUTURE OF THIS LAND
OVER TIME.
#2: PREDICT THE FUTURE OF THIS
LAND OVER TIME.
#3: PREDICT THE FUTURE OF THIS LAND
OVER TIME.
LEARNING GOAL: WE WILL LEARN THE MANY
WAYS WHICH EARTH'S SURFACE IS BUILT UP
 LEVEL 4 = I can….
AND TORN DOWN.
 Analyze the built up and tare down of the Earth’s surface. Predict the
future appearance of the land over time.
 I can also do levels 3-2.
 LEVEL 3 = I can….
 Compare and contrast physical weathering and chemical weathering. I can
also do level 2.
 LEVEL 2 = I can….
 Determine the cause and effect of weathering and erosion.
 LEVEL 1 = I can….
 With some assistance/help, I can do some of level 2, otherwise, I am
confused and need more time.
 LEVEL 0 = I am totally lost and confused. I really need help.
RESOURCES INCLUDE
Compass Learning Odyssey
Thinking Map
AVID – Cornell Notes