plate tectonics each of the following sentences is incorrect. rewrite them to make them true. as...
TRANSCRIPT
Plate Tectonics
Each of the following sentences is incorrect. Rewrite them to make them true. As altitude increases pressure increases,
because higher up there are more molecules pushing down on you.
The troposphere contains the ozone layer, which traps sunlight and keeps the Earth warm.
All life on Earth occurs in the mesosphere.Write in complete sentences!
Don’t talk during the Catalyst!
Objectives
By the end of today, all SWBAT…
Describe how convection causes tectonic plate movement
Explain how tectonic plates move at convergent, divergent and transform boundaries
The lithosphere cracked into pieces as the Earth cooled. Tectonic plate = piece of the lithosphere
20 plates
Quick Review
Plates of the Earth
What do we know about the temperature of the earth?
Because of this temperature difference…
Key Point #1: Convection causes tectonic plates to move Molten (hot liquid) core rises, cools off, and
then sinks This makes a conveyor belt that moves the
tectonic plates
There are two types of plates
Key Point #2: There are two types of tectonic plate Oceanic crust: thin and dense (HEAVY)
Continental crust: thick and less dense
Key Point #3: There are three ways that plates move against each other
Complete this table in your notes
Movement… Makes… Picture
Transform
Divergent
Convergent
Transform Plate Boundary
Movement: Two plates slip past each other
Makes: Earthquakes
Divergent Plate Boundary
Movement: Two plates move APART
Makes: New crust Mid-ocean ridges
(mountain ranges in the ocean)
Diverge: move apart
Convergent Plate Boundary
Movement: Two plates move toward each other Oceanic plates sink below continental
plates Forms:
Volcanoes Mountains
Why are volcanic islands found in chains?!?!
Stop and Jot Like It’s Hot Try to figure it out yourself Answer in notes
Hint #1: Think about how plates are moving when they’re formed
Hint #2: Think about what process is causing the plates to move
Why are volcanic islands found in chains?!?! Convection
causes plates to move
When they move over a “hot spot” a volcano forms
The plates continue to move, producing many volcanoes in a line
Whiteboard Practice
Send one person from your group to get Whiteboards Markers
What occurs during convection?
Hot material in the Earth rises, cools, and then sinks in a CIRCLE
Hot material in the Earth rises, cools, and then sinks in a CIRCLE
Which plate boundary?
Two plates move togetherConvergentConvergent
DivergentDivergent
ConvergentConvergent
How does convection cause tectonic plates to move?
Material in the Earth is always moving in a circle
This creates a conveyor belt that carries the plates
Material in the Earth is always moving in a circle
This creates a conveyor belt that carries the plates
Two plates slide past one another
TransformTransform
Two plates move apart
DivergentDivergent
One plate sinks under the other
ConvergentConvergent
Describe why volcanic islands are found in chains
Convection causes a plate to move over a hotspot, which produces a volcanic island
The plate keeps moving, which makes more islands in a line
Convection causes a plate to move over a hotspot, which produces a volcanic island
The plate keeps moving, which makes more islands in a line
Trenches and mountains are madeConvergentConvergent
Earthquakes are formed
TransformTransform
DivergentDivergent
Explain what is happening in this picture
Earthquakes are formed
TransformTransform
Key Point Wrap-Up
Key Point #1: Convection causes tectonic plates to move Hot material rises, cools off, and sinks in a CIRCLE
Key Point #2: There are two types of tectonic plate Oceanic Continental There are three ways that plates move
against each other Convergent Divergent Transform
Exit Questions
How does convection cause tectonic plate movement?
What type of plate boundary forms mid-ocean ridges?
The Mariana islands are a chain of islands created by volcanoes. Explain why the islands are found in a line