plate tectonics each of the following sentences is incorrect. rewrite them to make them true. as...

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