Plate Boundaries

Go through the slides and add notes to your handout.
- Notes start on slide 6

Use the notes to answer the questions.

Plate Boundaries

Review from yesterday

Earth is Made of Tectonic plates

• Alfred Wegner came up with the theory

• Earth's Crust is broken into many Plates

  • Large Pieces of Rock

Plates "Float" on Mantle

• Magma (Melted/Molten Rock) in the Mantle

• Heat from the core causes movement in the mantle

Multiple Choice

Who was the scientist who proposed the theory of continental drift?

• Alfred Powell

• Harry Hess

• Alfred Wegener

• Ernest Rutherford

Multiple Choice

The super continent that existed when all continents were together was named

• Gondwana

• Laurasia

• Eurasia

• Pangea

Multiple Choice

What does the theory of Continental Drift explain?

• Ocean currents move continents around

• The sun's heat causes the plates to move

• Continents used to be together and slowly drifted apart

Multiple Choice

Earth's crust is made of one solid piece of rock.

• True

• False

Multiple Choice

What causes convection currents to occur in the Mantle?

• heat from the crust
• heat from the mantle
• heat from the core
• heat from the sun

​Plate Boundaries
- location where two tectonics plates meet
-Changes to the earth's surface occur near Plate Boundaries

Divergent Plate Boundaries

Sketch of boundary:
<-- -->
Direction of movement:
plates pull away from each other.


Description / Features of plate boundary:
- new oceanic crust
-mountain ranges, Rift Valley (continent)
- Mid Ocean Ridge (ocean)

Divergent Boundaries

Examples

Mid Atlantic Ridge

Great African Rift Valley

Transform Plate Boundaries
Sketch:

Direction of movement:
plates slide past each other


Description / Features of plate boundary:
- earthquakes


Examples: San Andreas Fault (california)

Convergent Boundaries - Collison

Direction of movement:
plates push into each other


Description / Features of plate boundary:
- Mountains

​Sketch --> <--

Convergent Boundaries - Collison

Examples:
-Himalaya Mountains in Central Asia

-Western Andes Mountains in South America

Convergent Plate Boundaries - Subduction Ocean-ocean

Direction of movement:
plates push into each other and the denser crust goes under


Description / Features of plate boundary:
- Island Arcs (Volcanoes)
-Trench

Convergent Boundaries - Subduction Ocean-ocean

Examples:

- Marianas Trench

-Aleutian Islands

Convergent Boundaries - Subduction Ocean-Continent

Direction of movement:
plates push into each other and the denser Ocean crust goes under the continental crust


Description / Features of plate boundary:
- Volcanic Arc (land)
-Trench (ocean)

Convergent Boundaries - Subduction Ocean-Continent

Examples:

- Andes Mountains

-Peru Trench

Multiple Choice

The place where two plates collide is called a _____________ boundary.

• convergent

• divergent

• transform

• magma

Multiple Choice

What kind of plate boundary is shown in this picture?

• plates sliding past each other.

• a divergent boundary.

• a convergent boundary.

• a transform boundary.

Multiple Choice

Which of the following can be formed by a convergent boundary?

• Volcanic islands

• all of the choices

• Volcanic mountains

• Deep ocean trenches

Multiple Choice

Earth's crust is ___.

• One smooth shell

• Cracked into 12 plates

Multiple Select

Which two facts help to explain why the plates move?

(Pick 2!)

• The plates in the crust are liquid.

• The plates in the crust are solid.

• The mantle below is solid.

• The mantle below is liquid.

Multiple Choice

The movement of Plates is called "Plate ___."

• Drift

• Tectonics

• Transfer

Multiple Choice

Plates Come Together

• Convergent

• Divergent

• Transform

Multiple Choice

Plates Spread Apart

• Convergent

• Divergent

• Transform

Multiple Choice

Plates Rub Against Each Other

• Convergent

• Divergent

• Transform

Multiple Choice

• Convergent

• Divergent

• Transform

Multiple Choice

• Convergent

• Divergent

• Transform

Multiple Choice

• Convergent

• Divergent

• Transform

Match

Match the plate boundary to its diagram.

Divergent

Convergent

Transform

• Divergent

• Convergent

• Transform