25.3 - 25.4 Flashcards
What is the boundary that marks a density change?
Discontinuity
How can Discontinuity be identified?
siesmic wave
What are the shadow zones?
no siesmic waves have been recorded
Whats another name or term for shadow zone?
dead zone
What are the degrees that the shadow zone fall?
between 105 and 140
Is the outer core a solid or a liquid?
liquid
Is the inner core a solid or a liquid? Why?
is a solid due to the pressure
That is the Lithosphere?
the crust and the upper most mantle
What is the asthenosphere?
plastic like layer that the plates move on
What metallic make up the core?
Iron
what elements make up the mantle?
Calcium, Aluminum, Iron, and Magneasium
is the measure of fluid’s resistance to flow
viscosity
is the chemical compound silicon dioxide
Silica
is a small steep-sloped volcano with a short eruption cycle
Cinder cone volcanoes
are broad, flat structures composed of layer upon layer of lava flow
Shield volcanoes
a large and steep-sided volcano composed of layers of lava and ash
Composite volcanoes
What is Molten?
Magma
Where is the Ring of Fire located?
In the Pacific Ocean
What forms when tectonic plate collide against subduction zones
volcano’s
What two specific locations can volcano’s be active?
mid atlantic ridge , east african rift
What are created from hot spots?
volcanic Islands
if a liquid has a higher viscosity is it going to run faster or slower?
faster
what are pyroclastic material
any solid material
what is the smallest type of pyroclastic?
ash
