1) What 2 observations did Alfred Wagoner use to indicate/conclude that the continents were moving?
2) What evidence have we observed since that supports Plate Tectonics?
3) Where on the Earth is new rock being made?
4) Where on the Earth is old rock being destroyed?
1) What were the indicators for a volcanic possible volcanic eruption?
2) What makes a hot spot different from a "normal" volcano?
3) Why do volcanoes bulge before they erupt?
1) Why do we have earthquakes at all?
2) What are some features we can see to identify where faults might be?
3) Which seismograph shows a greater amount of energy being transferred?
3/14 & 17:
1) What is directly responsible for the break up of the crust into Tectonic Plates?
2) If the tectonic forces are always present, why don't faults slide constantly with earthquakes?
3) From what we have learned, what two variables will affect the amplitude of seismic energy experienced at a certain location?
Lesson One Overview: Continental Drift:
A nice overview of the main concepts we needed to understand from lesson one. What evidence have we seen for the basic idea? How did Alfred Wagener find this evidence and how does it all add up?
Deepest Place on Earth:
Introduction to Plate Tectonics and how we discovered the dynamics of our planet. Explains how science experiments are carried out for things we either can't or have a difficult time observing with our own eyes.
Mount Saint Helens:
Introduces the history of the most destructive volcanic eruption on US soil. More importantly, it discusses the indicators for possible volcanic eruptions and the associated hazards.
San Andreas Fault:
Shows how geologists discover and map faults based upon earthquake evidence. Looks at the great San Fransisco earthquake and how we have been able to determine so much about how the fault works from looking at geologic features.
Also spends a good deal of time discussing earthquake prediction and why/where we think the next "Big One" will hit.
Perhaps the biggest potential geologic hazard on the entire North American continent; Yellowstone is just a few hundred miles to the north of us here in Utah Valley. How do we know is it a Super volcano? How are we monitoring is activity and what will it be like if it does erupt?
How Tall Can Mountains Be?
With all this discussion about how plate tectonics creates things like trenches and mountain/volcanoes,. And knowing how high the convergent boundary between India and Asia has pushed the Himalayan mountains, is there a limit to how high a mountain can possible be?
How does Plate Tectonics REALLY work?
Well, as simple as it seems, this video does a GREAT job of showing you the basic mechanics of how convection in the mantel affects ths crust and creating oceans, continents and mountains.
TRY IT AT HOME!