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