Daily questions science 6-7 Flashcards
what are examples of the modern evidence for plate tectonics?
distrbution of earthquakes, volcanoes, sea floor spreading
at what type of plate boundary do mountains form and why?
convergent, plates move, continetly, continet plate boundary
why do volcanoes erupt?
gases expanding and bubbling out of solution, less pressure near the surface
why are stratovolcanoes cone shaped?
high vicoisty, volcanic ash
what was unusual about the may 18,1980 eruption of mt. st. helens?
land slide, earthquake, cheminny explotion, blew out the side
how can volcanic eruptions influence climate?
volcanic ashes in atmosphere makes climate change makes colder and dryer
What are seismic waves and what are the two major types?
the realase of energy caused by an earthquake, body and surface waves
Earth quake damage is a function of what factors
duration and magnitude . also what is under the building.
What is a tsunami and why are they so destructive?
large oceanic wave, generated by a earthquake (displacement )
how do we know that the outer core is a liquid?
s waves can not go through liquids only solids.
