Geology Test 3
A stream begins at a elevation of 200 and flows a distance of 400 kilo. What is the average gradient
0.5 m/km
An aquifer is
A saturated, porous, and permeable layer or stratum
Smooth rounded cobbles and pebbles are found in streams are a result of
Abrasion
How much of earths surface water exists in oceans
Almost all of Earth's surface water exists in the oceans.
The ration of parent to daughter isotopes in a radioactive decay process is 0.40. How many half lives have elapsed since the material was 100% parent atoms
Between 1 and 2
Which era of geologic history do geologists know the most about
Cenozoic
Which of the descriptions below accurately describe the various types of differential stress
Compressional stress which squeezes rock and shortens then, tension stress which pulls rocks apart and stretches them, and shear stress which moves one part of the rock past another
Examine the words and phrases and determine the relationship among the majority
Delta capture
Which example best demonstrates groundwater power as an erosional agent
Dissolution of limestone leading to sinkholes and caverns
What is a fault?
Fracture along which rocks move
How do monoclines form?
Movement along a steep fault in basement rock pushes up a portion of the ductile rock layers above it.
Rock deformation mostly occurs
Near the center of the plates
How does water get from the oceans into land
Ocean water evaporates and moves into atmosphere , where it condenses into liquid and falls out of the atmosphere as rain
Which ocean is earths largest
Pacific Ocean
Which method of fossilization listed below is correctly described
Permineralization is the process in which pores in bones and wood are permeated by mineral laden water
Which type of force is responsible for normal strike slip formation
Shear force
Which of the following concerning stalactites and stalagmites is not true
Stalagmites form on the floors of caves below the water table
Which type of fault had no vertical motion or rocks associated with it
Strike slip fault
What would happen to the atmospheric water if earth were mostly covered with land
The atmosphere would contain less water
Happen to the oceans if the surface runoff and groundwater flow did not occur
The oceans would become smaller
A transform fault is
a strike-slip fault that forms the boundary between tectonic plates
A Horst is
an uplifted block bounded by two normal faults
Where is most of Earth's freshwater found?
as ice at Earth's surface
Which type of force is responsible for reverse fault formation?
compressional force
The black hills of south Dakota are a good example of which type of geologic structure
dome
What does the hydrologic cycle describe
how liquid and gaseous water move between the ocean, atmosphere, and land.
How do natural levees form
levees form during flooding- sediment carrying floodwater rises above channel and spreads out and current slows and deposits sediment in large mounds next to and paralleling the channel and it remains as an elevated rise after the flood water receeds, they help keep floodwaters from spilling onto floodplains
Which type of force is responsible for normal fault formation
tensional force
What are rocks below and above a fault called
the footwall below and the hanging wall above
