plate tectonics – chapters 10, 11, 12 movements of the...
Post on 07-Aug-2020
1 Views
Preview:
TRANSCRIPT
Objectives: S.W.B.A.T.
• Introduction of crustal movement
understand and state evidence that shows
crustal movement
• How does crustal movement affect human
lives
• Define a bench mark and what it tells us
Activities:
• Notes/discussion present and past crustal
movement
• Video natures fury
• Model construction – Weathering/Erosion
• Missing letters chap. 11
• notebook organize to be turned in by end
of week - work on any missing work
Plate Tectonics – chapters 10, 11, 12 Movements of the Crust & Crustal Features
Evidence the Crust moves today:
1. Earthquakes 150,000 each year
2. Volcanic eruptions
3. Bench marks that have changed elevation
• Benchmark – locations on earth that its elevation has been measured very accurately. (bridges, dams, airports)
4. Displace structures: (buildings. Roads, train tracks)
Evidence of past crustal motion:
1. Distorted layers of rock (sedimentary rocks
that are bent)
2. Sedimentary rocks in high elevations
(fossils out of place, seashells on top of Mts.
Today’s technology helps to tell very
small crustal movements
Example: LAGEOS – laser geodynamic
satellite bounces a beam off the earth and
records any changes in the movement of the
crust – also G.P.S. data helps prove crust movement
http://earthquakestoday.info/
http://earthquake.usgs.gov/earthquakes/dyfi/
top related