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Today’s Guiding Question
What do car accidents and convergent plate boundaries have in common?
Remember: Convection currents cause the plates to move in different directions
Convection currents Crustal Plate Movement
Tectonic Plate Facts 1. The crust is broken in 15
tectonic plates
3. Some plates have oceans on them- oceanic!
2. Some plates have continents on them- continental
4. CONTINENTAL CRUST= LESS DENSE5. OCEANIC CRUST= MORE DENSE
6. SUBDUCTION= WHENEVER A PLATE SINKS
Ms. K’s Friend ‘Connie’
Connie and I met in science class in 7th grade. We were best friends- like omg bfff!
However we are both equally stubborn and after awhile we began to bump heads.
We started workin’ each other in the hall, and finally we collided in a fight causing both of us to have swollen bumps on our heads. They were as huge as mountains!
Convergent BoundariesCollide causingMountains to form
CONVERGENT BOUNDARIES
What is happening?: plates are colliding! Diagram: Memory Trick: Convergent Collides
3 typesContinental-
ContinentalContinental-
Oceanic Oceanic-Oceanic
3 typesContinental-
Continental
-Equally dense -Plates ‘crumple’-Mountains
form!
Continental-
Oceanic
-More dense oceanic plate sinks
-Oceanic plate melts
-Crust is destroyed-Volcanoes form
Oceanic-Oceanic
-Older plate sinks
-Crust is destroyed
-Trenches and Islands form
SUBDUCTION- WHENEVER A PLATE
SINKS!
Dating show: Plates style! Directions: Complete each section of
reading and answer the Convergent Boundary questions in your notes
1. DO NOT TALK TO ANYONE BUT YOUR PARTNER
2. NO THROWING STUFF3. REMAIN IN YOUR SEAT4. LEARN LEARN LEARN
Today’s Guiding Question:How do a DJ and a moving walkway
have anything to do with plate boundaries?!
Plate Tectonic Key Vocabulary
1. Rift- a crack or crevice in the earth
2. Sea-floor spreading- a crack in the ocean floor where magma is leaking out
3. Mid-ocean ridges- underwater mountains that form at divergent boundaries
Ms. K’s Friend “Divisha”
During 8th grade a new girl came to my middle school- her name was Divisha.
Everyone liked Divisha- I mean EVERYONE! She took over the 8th grade! Soon I was in competition with her.
My friend group became Divided, torn between following me and following her.
Finally the rift occurred- my real friend group moved to one side of the cafeteria and Divisha’s moved to the other, leaving a trench and mountain of hate between us
Divergent PlatesDivide formingRifts, trenches and mountains
DIVERGENT BOUNDARIES
What is happening?: plates are moving apart Diagram: Memory Trick: Divergent Divide
DIVERGENT BOUNDARIES
On continents:1. Rift valleys form
In oceans:1. Trenches form2. Mid-ocean ridges form3. New crust is created due
to sea floor spreading
4. CRUST ‘CDDC’Created at Divergent
Destroyed at Convergent
Listen-Hypothesize: What do you
think is going on?!WHY!!?!?!
Ms. K’s Friend “Transfasia”
During my freshman year of high school there was this girl Transfasia that wanted to be my friend sooo badly. I mean she was borderline a stalker!
Everyday she would bump into me in the hallway just to say hi. Finally I got fed up with it!!!
She bumped into me, so I shoved her hard back. It started a ‘mosh pit’ in the hall way and everyone was bumping someone around! It looked like an earthquake at hit!
Transform BoundariesBump past each other causing
Earthquakes
TRANSFORM BOUNDARIES
What is happening?: plates are scraping Diagram: Memory Trick: DJ Transform
Causes: EARTHQUAKES!
Fun fact!
• Virginia had an earthquake in 2011….• BUT WAIT?! Virginia isn’t along a fault line!– Sometimes there are thin areas (rifts) in the crust
that are weak that can ‘slip’ like a transform boundary
Scientist Says!
• Convection currents• Convergent• Subduction • Pangaea• Transform• Divergent
Dating show: Plates style! Directions: Complete each section
of reading and answer the Boundary questions in your notes
1. DO NOT TALK TO ANYONE BUT YOUR PARTNER
2. NO THROWING STUFF3. REMAIN IN YOUR SEAT4. LEARN LEARN LEARN
Finito? (finished)Work on the independent
practice questions1. DO NOT TALK TO ANYONE BUT YOUR
PARTNER2. NO THROWING STUFF3. REMAIN IN YOUR SEAT4. LEARN LEARN LEARN
