Card Set Information
what powers the water cycle?
aquifer and it purpose, and what it allows water to do?
difference between a well and a spring.
sources of ground water polution
water table location
what type of rock allows percolation
why shouldn't we build on flood plains?
point of sewage treatment plants
relation between temperature and saturation.
what causes coriolis effect
how denser water moves
label diagram of the water cycle
a shield volcano
has gently sloping sides
a cinder cone volcano
has steepp slopes
a combination of explosive and nonexplosive eruptions will create a
a large depression that forms when the magma chamber partially empties is a
what describes subduction
movement of one tectonic plate under another
where are volcanoes most likely to form?
along plate boundaries
most active volcanoes form
where tectonic plates collide.
when an oceanic plate collides with a continental plate, the oceanic plate is usually subducted because
oceanic crust is denser and thinner then continental crust
the volcanoes of Hawaii and other places far from tectonic plat boundaries are known as
Volcanic activity is common along the Mid-atlantic ridge. This activity occurs at a
what are areas of earths surface that magma and gases pass through
what is pyroclastic material
magma that blasts into the air and hardens
what is a rift.
a crack in the earths crust
molten rock deep underground often gathers in a
Mount Rainier and Mount St. Helens are
tectonic plates "float" on
magnetic reversals are preserved in
mid-ocean ridges are the most common type of
what siesmic waves do the greatest damages
what type of boundary is formed when plates separte
what kind of deformation leads to earthquakes
what causes the ground to move during an earthquake
-built out of layers of lava released form repeated nonexplosive eruptions.
-lava is very runny so it spreads out over a wide area.
-can be enormous, not very steep
- they are made from pyroclastic material
small and only last for a short amount of time due to erosion
form from explosive eruptions of pyroclastic material
followed by quieter flows of lava.
what does nimbo or nimbus mean?
likely to produce rain
what does cirro mean?
clouds that form at high altitudes
clouds that form at middle lattitudes
dark storm clouds likely to have rain
middle clouds made from water drops or ice crystals
high whispy cloud at about 7,000 m.
puffy white clouds that tend to have flat bottoms
clouds that form in layers and cover large areas of the sky
thin feathery white clouds found at high altitudes
composition of the earth
1. found in ground, magma slow cooling, very rough texture many crystals,
2. above ground, lava fast cooling, very smooth.
magma vs. lava
magma inside intrusive
lava outside extrusive.
2. organized in bands or patterns
3. non foliated, no patterns or bands