Transcript Plate Tectonics and Weathering

Plate Tectonics and Weathering
STUDENTS WILL PREDICT THE OUTCOME OF
A SITUATION BY ANALYZING THEIR PLATE
TECTONIC NOTES.
Warm Up:
 Define “landforms” in your own words.
Homework
 Read pages 37-43 define the key terms on page 37
The earth’s surface
 The Earth has two surfaces. Water and land.
 ALL of the Earth’s surface are categorized into 7
continents.
Below the surface
 Scientist believe
the beneath the
Earth’s surface
there are 12
plates that
divide the
world. These
plats vary in
size and are
always moving.
Why do the plates move?
 The energy deep within the
Earth’s crust builds
pressure forcing the plates
to move.
What the world looked like 1 billion years ago.
 Pangaea: the theory that
the continents were all
once joined together in
one large land mass.
Two types of plates
 Ocean plates
 Land Plates
What happens when plates collide?
 Turn and talk: What do you think happens when and
if plates collide (bump into each other)?
Plate Tectonics
 http://www.teachertube.com/viewVideo.php?video_
id=17144
 CONVERGENT boundaries are where the plates
move towards each other
On the flip side
 When plates collide on one end that typically means
they have separated on the opposite side(s)
 When two plates separate lava or magma reaches the
earth’s surface. This cooled magma creates
landforms both under the water and above the water.
This is know as DIVERGENT.
Plates slide
 When plates slide suddenly we experience
earthquakes. Called a TRANSFORM
Weathering
 Weathering is the natural breaking down of rocks
into smaller pieces caused by several factors.

Heating and cooling over causes rocks to crack
 Erosion: the movement of sediment from one
location to another.
Work Time:
 Complete the assigned work pieces.
Quick Write:
 How can weather cause problems?