Divergent Boundary

Prediction

Predict what type of movement occurs at a divergent boundary.

Write this prediction at the top of your next blank page.

Green cards = front left corner Red cards = front right corner Blue cards = back left corner Yellow cards = back right corner 2 min to share!

Divergent DEMO

Draw table below on blank notebook page:

What I … Observations

..used…

…did…

…happened…

Divergent demo

What did you do? What did you notice? What was this demo supposed to show? Was your prediction correct? Explain! Green cards pair up with red cards Yellow cards pair up with blue cards! 2 min to discuss your results!

Divergent Demo

What is inside this candy bar? What does each ingredient in the candy

bar represent?Think about what moves in a boundary…Chocolate = Earth’s Plates (crust and

lithosphere)Carmel = asthenosphereWas this a good or bad model? Why?

Divergent Boundaries Think-pair-share-

Based on the demo, predict what kind of movement occurs.

In your own words: Discuss with a partner: What is a fault? Break in the rock of the crust where rock surfaces slip

past each other.

What type of fault occurs? Here are your choices:

Normal Reverse Strike Slip

Faults

Think back to yesterday….. If a reverse occurs at a Convergent,

THINK-PAIR-SHARE: predict which occurs at a DIVERGENT?

YESS!!! A normal Fault occurs! Lets check out some examples!

Normal Faults occur at Divergent Boundaries

Divergent Plate Combinations

Turn to your neighbor and name the two types of plates.Oceanic and continental

What 2 plate combinations can you make using oceanic and continental?O-OC-C

Let’s start with O-O

What landforms are created as a result of an oceanic-oceanic divergent boundary?

O-O

A rift valley (new crust) Volcanic Mid ocean ridge. Real world examples:

The Mid-Atlantic Ridge Krafla Volcano(in Iceland)

C-C

Landforms created?

C-C

Rift Valley (new crust) Volcano Real world example:

African Rift Valley

Transform Boundaries

Transform Boundaries

Pair up: Predict what movement occurs at this boundary.

Green cards pair up with blue cards. Red cards pair up with yellow cards. 2 min to discuss!

LET’S DANCE!!

Doin’ the Boundary Bop! Find a partner! Listen as I call out a boundary!! When I say Convergent, how do you and

your partner move? Divergent? Transform?

Transform Boundaries

What fault occurs?Not mineNot yours

Options:NormalReverseStrike Slip

Transform

YES! Strike Slip Faults!

Where can this occur?

Identify the three plate combinations!O-OC-CO-C

Put in boxANY 2 PLATES!

What occurs at transform boundaries? EARTHQUAKES!!!! Real world example

San Andreas Fault

Transform Boundary DEMO

Ladybugs:Pick up your tables index cards & Purple

directions 4 index card halves

2 card halves are cut straight2 card halves are cut jagged

Follow directions and answer questions in lab notebook.

Reflection – Exit Ticket (Answer on index card!)

Reflect on the three types of boundaries you have learned about. Include:How are they different?How are they similar?Combinations of plates (just oceanic,

continental or both?)Resulting landformsTwo new terms you learnedEvaluate one of your hypotheses – were you

correct? Explain!