Midterm #2 TopHat Questions Flashcards
Soil liquefaction occurs due to severe shaking
- increasing water pressure in soils which breaks bonds between grains
An increase of 2 in magnitude leads to a ____ times increase in shaking.
- 100
A high temperature material has ___ viscosity than the same material at lower temperature.
- lower
Which of these materials are found at the surface of the earth?
- lava
- volcanic rock
Which causes the most explosive volcanic eruption/
- Rhyolite magma of low viscosity and high volatile content
Lahars are
- mud flows caused by volcanic eruptions
The majority of Earth’s volcanic activity occurs in which of the following tectonic settings?
- spreading centres
The most active Cascades volcanoes in the last 4000 years is
- St. Helen’s
Volcanoes in Canada result from
- rifting
- a hot spot
- subduction
Earthquakes generate tsunamis during the
- co-seismic period
Tsunamis can be caused by
- meteor impacts
- earthquakes
- volcanoes
- landslides
Near the coast, tsunami waves
- decrease in velocity and increase in amplitutde
The wavelength of a tsunami is ___ relative to ocean water depth.
- long
Particle motion for Daylight wave
- retrogade elliptic
Particle motion for tsunami
- prograde elliptic
Particle motion for love wave
- transverse
Compressional waves particle motion
- longitudinal
Tsunami water flows ____.
- straight
Tsunami inundation can last for hours and contain _____.
- many consecutive waves
A 2-kg boulder experiences ___ of gravitational force.
- 19.6 N
Removing mass low on the slope can cause ____.
- slope instability
Which of the following is NOT a trigger of slope instability?
- onset of winter
Climate is weather averaged over ____.
- 30 years
Th largest cause of anthropogenic global warming are:
- C02 emissions
