How old was the theory of plate tectonicsthe defining theory of all earth sciencewhen man first walked on the moon? https://www.youtube.com/watch?

How old was the theory of plate tectonics—the defining theory of all earth science—when man first walked on the moon?

https://www.youtube.com/watch?v=Iy5a2P3zXl4

Select one:

a. 1 year

b. 6 years

c. 26 years

d. 60 years

e. 66 years

The duration of shaking during an earthquake is a decent proxy for the earthquake magnitude. A full rupture of the Cascadia subduction zone will bring shaking for a duration of about:

http://www.newyorker.com/magazine/2015/07/20/the-really-big-one

Select one:

a. 15 to 30 seconds

b. 1 minute

c. 2 minutes

d. 3 to 4 minutes

e. 4-minutes

Which statement best describes the tectonic setting of the Cascadia trench (west coast of the Pacific Northwest) today?

Select one:

a. Divergent boundary

b. Convergent collision-zone boundary

c. Convergent subduction-zone boundary

d. Transform boundary

e. Hot spot that is not on a plate boundary

What phenomenon is expected but missing in Cascadia?

https://www.youtube.com/watch?v=Iy5a2P3zXl4

Select one:

a. earthquakes

b. volcanoes

c. a trench

d. turbidites

What is so remarkable about the turbidites (sand deposits formed offshore due to underwater, earthquake-triggered landslides)?

https://www.youtube.com/watch?v=Iy5a2P3zXl4

Select one:

a. The same number can be found in all the sediment cores gathered between Vancouver to Mendocino.

b. They mark the occurrence of large storms, earthquakes, and volcanic eruptions

c. They also preserve ash from the eruption of Mt Mazama

d. They record 13 great Cascadian earthquakes in the past seven thousand years

e. All of these

The amplitude of a tsunami wave is directly controlled by all of the following, except:

Select one:

a. The volume of water displaced.

b. The energy (velocity) of the event

c. The distance from the source.