Changes to the
surface of the
Earth….
Slow Vs. Fast
Fast Changes
• Volcanic eruptions
• Earthquakes
• Mudslides
• Landslides
Slow Changes
• Erosion
• Weathering
• Deposition
Changes…..
Slow….
Fast….
Weathering…
---breaking
down of rock
into silt, sand
or clay…..
Erosion
----transporting
of the broken
down rock
caused by
weathering
Wind Erosion….
Wearing away by
the wind, can
form such
formations as
dunes….
ICE EROSION
Two types of
glaciers
A. Valley- Ushaped valleys, and
they are high in the
mountains.
B.
Continental
glaciers cover large
areas of Earth
Water
Water and
Wind are both
agents of
erosion and
weathering.
Which of the following is the
breaking down of rock into silt,
sand and clay?
25%
25%
25%
de
ds
li
La
n
on
De
po
sit
i
in
g
th
er
W
ea
sio
n
Erosion
Weathering
Deposition
Landslide
Er
o
1.
2.
3.
4.
25%
Fastest Responders (in seconds)
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5
Which of the following is the
transporting of silt, sand or clay
into a new location?
25%
25%
25%
De
lta
on
De
po
sit
i
in
g
th
er
W
ea
sio
n
Erosion
Weathering
Deposition
Delta
Er
o
1.
2.
3.
4.
25%
Fastest Responders (in seconds)
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5
Fast Changes!!!!
Hurricanes
Earthquakes….
Review (Slow v. Fast)
Some changes are slow!
Some changes are fast!
Which of the following would be
considered a fast change to the
Earth’s surface?
n
os
iti
o
de
p
g.
..
yin
ca
rr
d
W
in
r iv
er
A
ts
un
a
m
it
ak
er
od
in
...
i..
.
25% 25% 25% 25%
A
1. A tsunami taking
out a coastline
2. A river eroding soil
along the shoreline
and forming a delta
3. Wind carrying a
sand in the dessert
and making a dune.
4. deposition
Fastest Responders (in seconds)
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5
Landforms
• Glaciers or large sheets of ice form GLACIAL
MORAINES – Cape Cod and Long Island are
both GLACIAL MORAINES.
• Glacial moraines are formed as large pieces of
ice push along the earth’s surface leaving
behind large pieces of sediment. The large
pieces of sediment form a landform known as
the glacial moraine.
Landforms continued…
• Dunes are formed from wind erosion. They
are formed slowly over time.
Landforms cont…
• Deltas are formed when water (rivers, streams
or lakes) pick up sediment and deposit them
into a new location. Over time, it creates a
land mass known as a delta.
Mountain
Formation
The earth is made up
of plates. The The
plates are in constant
movement.
Sometimes plates
collide, energy is
released and new
landforms are
produced. Sometimes
plates pull apart and
allow magma to come
to the earth’s surface.
• Let’s look at a video…
http://www.brainpop.com/sc
ience/earthsystem/mounta
ins/zoom.weml
Which of the following is made
from river deposited sediments?
o
in
. ..
or
a
lM
cia
Gl
a
25%
Igl
o
25% 25%
ta
25%
De
l
Dune
Delta
Glacial Moraine
Igloo
Du
ne
1.
2.
3.
4.
Fastest Responders (in seconds)
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5
Which of the following is a
landform that is made from wind
erosion?
o
in
. ..
or
a
lM
cia
25%
Igl
o
25% 25%
Gl
a
25%
Du
ne
Delta
Dune
Glacial Moraine
Igloo
De
lta
1.
2.
3.
4.
Fastest Responders (in seconds)
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5
Pangea
Theory that our world
consisted of one giant “SUPER
CONTINENT.”
Fossils provide evidence of
what organisms lived before
us…
What type of rock would I find
a fossil in and why?
Igneous,
metamorphic, or
sedimentary?
What have we learned?
•
•
•
•
What are some slow changes?
What are some fast changes?
What is landform is made from water erosion?
What is a sand dune? What type of erosion
forms a dune?
• What is weathering?
ADVANCED…..
How would freezing and thawing affect the surface
of the earth?
Participant Scores
0
Participant 1
0
0
0
0
Participant 2
Participant 3
Participant 4
Participant 5