a) Draw a volcano:
Teachers were asked to draw a volcano in one minute and then to
compare their drawings with volcanoes around the world.
Notes from video:
Ash Falls: Largest eruptions continue spewing for days
or weeks, reaching heights as high as 30 kilometers above the volcano in
less than 30 minutes. Ash can be carried thousands of kilometers
downwind, stripping leaves from trees, destroying crops, collapsing
houses, contaminating water sources, etc.
Ash flows: Avalanches of ash flows; extremely hot, moving
as fast as several 100 k per hour, burning everything in its path.
Mudflows: Floods of water, mud, sand, and rock that rush
down river valleys. Raging torrents of debris moving as fast as
50 k/hr and uprooting everything in its path.
Using the video in class:
Think about a volcanic eruption such as we saw in the video. Describe
how this geospheric phenomenon influences the other spheres:
Ash within atmosphere, destruction of crops, choking of all
river systems, effect on climate systems. Therefore impacts atmosphere,
biosphere, and hydrosphere.