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2.3: Model Version #2

Last updated over 4 years ago

5 questions

1

Check for understanding about plate tectonics - match the term with the description.

Draggable item		Corresponding Item
Pangaea		The theory that the earth's crust is broken into chunks that slowly move
Tectonic plates		A super continent that existed 250 million years ago
Plate tectonics		Circular movement of the mantle caused by heating and and cooling magma
Convection currents		Evidence Wegener used to come up with the theory of plate tectonics
Fossils and rock formations		Broken chunks of the crust that are in motion

1

Check for understanding - match each description or example with the correct plate boundary.

Where an oceanic plates slides beneath a continental plate
When two plates are sliding apart
When two plates are colliding / crashing
Example: Himalayan Mountains, Cascade Mountains
Example: Hawaiian Islands
Example: San Andreas Fault
When two plates are sliding against each other in opposite directions
Where a suubduction zone occurs
Where new ocean floor is created
A magma plume rising to the surface in the middle of a plate

Convergent boundary
Divergent boundary
Transform boundary
Hot spot

1

Which type of plate boundary explain the eruption of Mt. St. Helens?
I think that a _____ boundary explains Mt. St. Helens because....

1

Model Version #2.
A few weeks ago, you drew your initial idea of why Mt. St. Helens erupted. Since then, we drew a model as a class, and learned about the layers of the earth and plate tectonics. Below, draw an updated model with at least 2 new details. Include the earth layers, tectonic plates, labels, and arrows to show what forces are at work. Describe your drawing in the box.

1

Which idea from today would you like re-explained before we take our model assessment on Friday?