Test 5-8

Question 1

Volcano activities and earthquakes are on west coast of north america are attributable to what?(What forms them)?
A.Transform Plate boundary
B.Divergent plate boundary
C.Convergent plate
D.Both a c
E.Both b and c

Answer 1

BOTH A AND C

Question 2

Common color of mythic rocks? Common color of fairtic rocks?

Answer 2

Mythic rocks are dark color
Fairtic rocks are fair

Question 3

An important agent of mechanical weathering is?
A.Frost wedging
B.Solution
C.Oxidation
D.Earth Worms
E.A and D

Answer 3

E. A and D

Question 4

The most criteria soil forming factor
A.Crimate
B.Parent material
C.Land relief
D.Organic activity
E. All are criteria

Answer 4

E. All Criteria

Question 5

The two major components of shear strength are?
Internal friction and gravity
Gravity and cogent
Internal fiction and cogent
None of the above.

Answer 5

C. Internal fiction and cogent

Question 6

Bent trees, leaning fence posts, cracked walls of structures are evidence of what
A.creep
B. Bool floss
C.Ash flows
D. Expand soles
E.All of these

Answer 6

A. Creep

Question 7

A slope strives north south and then it dips 40 degrees to the east
If a striking north south and drips east the block light may develop when the strike of the bed is:
A.not south , 5 degrees to the west
B.East west , 30 degrees to north
C. north south 50 to the east
D. north south 30 degrees to the east(Less than 40 degrees)
E.All of these

Answer 7

D. north south 30 degrees to the east(Less than 40 degrees)

Question 8

What should bias do before an area is developed?

Answer 8

Area should be studied first

Question 9

When water and carbon dioxde form carbon acid that can tear a rock apart, what kind of weathering is that?

Answer 9

Chemical weathering

Question 10

When ground water flows through limestone,
A.sink holes form
B.Water table will form
C.
D.tegent wells may form

Answer 10

B.Water table will form

Question 11

Your retirement home is in florida and it suddenly disappear?

Answer 11

Many homes in Florida suddenly disappeared
- results of SINKHOLES

Subsidence in Mexico City
-due to withdrawal of ground water from ancient lake
sediments.

Question 12

Check out essay quesion

Answer 12

good luck on test :3

Question 13

Volcanic activites on the west are formed by what plate boudnary?

Answer 13

Convernet boudnaires

Question 14

Identify all the landlsides, creeps etc in notes

Answer 14

good luck on TEST! ^_^

Question 15

Lava Domes, Shield Cones, Composition Cones, Cinder Cones

What do they look like?
Are they quiet or explosive?
Why is it shaped like that?

Answer 15

Quiet
Shield Cone: Convex upward shield- like bodies of lava
-Produced from gentle outpouring
Shield Cone have:
Fissure Eruption: Eruption of lava from long cracks

Explosive Eruptions
Composite Cone: Concave upward body of lava
-Very tall
Lava Done: Bulb-like masses like high silica, glassy lava

Cinder Cones: Small and numerous cones

Question 16

Soil Classifcations

Answer 16

Soil Classification
Based on Genetic Origin or Zonal Location Or Physical characteristics

Genetic
-Residual
weathered rock that remains in the same place(On parent rock)
-Transported
Moved from origin
Zonal: Based on 4 main zones where found:
Laterites (tropics & subtropics)
- Pedocals (arid regions)
-Pedalfer (temperate regions)
-Tundra soils (Polar regions)

-Physical characteristics: The US Comprehensive Soil Classification

Question 17

Zonal: Based on 4 main zones where found:

Answer 17

Laterites (tropics & subtropics)
- Pedocals (arid(dessert) regions)
-Pedalfer (temperate regions)
-Tundra soils (Polar regions)

Question 18

What cause Subsidence and Collapse

Answer 18

Natural: Earthquakes, volcanic Activities, Dissolution of CaCO3, dolomites, salts
-Earthquakes cause subsidence by displacement along faults e.g. in Alaska (up to 1m)
-Ground shaking to cause liquifaction of soil e.g., MISSISSIPPI R. Valley
-Volcanic Activities cause subsidence by emptying magma chambers
-Dissolution of CaCO3 results in Caves and Caverns that may collapse to depressions
=> SINK HOLES

Human Induced Subsidence
-From disturbance of environment by humans
e.g: -Groundwater pumping
-Extraction of oil and gas
-Costly/Expensive
-Cost US 10s of millions $/year
-Change drainage patterns previously in place to protect people, plants, animals

Question 19

Agents of weathering

Answer 19

Physical(Mechanical) Weathering
-Tempurtare
-Water-
-Pressure
-organic activity

Chemical weathering
Hydrations: Rock + water
-Forms hydrated minerals-> chemical break down(like salt)

Oxidation: Rocks +Oxygen
-Forms oxides-> mostly iron oxides(rust)

SolutionL Rocks + Carbon Diozxide(H2O)
-h2O+ CO2=> H2CO3(Carbonic Acid)