Changing Earth's Surface

Shaping Earth’s

Surface

Unit 2 M1 L3 Day 1

VOCAB DRILL

Agenda

Lesson Launch

Encounter the Phenomenon

Make a Claim

Plate Boundaries

Fold Mountains

Objective: Students will be able to
Understand the forces from
tectonic plates that shape the
surface of the Earth.

Vocab

Convergent Boundary: The boundary between two tectonic plates that
move towards each other.

Divergent Boundary: The boundary between two tectonic plates that
move apart from each other.

Transform Boundary: The boundary between two tectonic plates that
slide past each other.

Fault: A break in the Earth’s crust along which movement occurs.

Subduction: the process by which one tectonic plate slides below
another.

Encounter the Phenomenon

Encounter the Phenomenon

Encounter the Phenomenon

Encounter the Phenomenon

With your group discuss: What might explain the
why the west coast has mountains while the east
coast is more flat?

Sentence Starters:
I think that… may explain why the west coast has mountains while the east coast is more
flat.

The west coast has… while the east coast does not. That is why…

The west coast has mountains because…
The east coast is more flat because…

Make a Claim

The west coast of South America has mountains,
volcanoes, adn earthquakes while the east coast does not
because…

Plate Boundaries (p49)

Convergent Boundary:
The boundary between
two tectonic plates that
move towards each
other.

Word Roots:
Con: with/together
Verge: move

Plate Boundaries (p49)

Divergent Boundary: The
boundary between two
tectonic plates that move
apart from each other.

Word Roots:
Di: apart
Verge: move

Plate Boundaries (p49)

Transform Boundary: The
boundary between two
tectonic plates that slide
past each other.

Word Roots:
Trans: across
Form: shape

Multiple Choice

Identify the plate boundary

• diverging boundary

• converging boundary

• transformation boundary

• Fault

Fold Mountains and Subdiction (p52)

Subduction: the process by which one tectonic plate slides
below another.

When two tectonic plates converge, the tectonic plate that is more
dense will move below the tectonic plate that is less dense.

Fold Mountains and Subduction (p52)

There are 3 ways convergent plate boundaries can occur.

Oceanic + Continental

Continental + Continental

Oceanic + Oceanic

Fold Mountains and Subdiction (p52)

Fold mountains are created by the
compression forces caused by two
converging continental plates.

The Andes mountains (in the
background) are an example of fold
mountains formed by the converging
Nazca and South America plates.

Shaping Earth’s

Surface

Unit 2 M1 L3 Day 2

Shaping Earth’s

Surface

Unit 2 M1 L3 Day 3

Shaping Earth’s

Surface

Unit 2 M1 L3 Day 4