The Islamic University of Gaza
Faculty of Engineering
Civil Engineering Department
Instructor: Dr Mamoun Alqedra
Student Name:_________________________________
Engineering Geology ECIV 2204
Final Exam – spring 2004
Date : 20/6/2004 1400 – 1515
Time allowed: 2.00 hour
Student No._______________________
Question (1)
1-
State whether the following statements are True or False
Question
Metamorphic rocks have signs of life
2-
Tsunami waves advance at a speed between 500 – 950 km/h
3-
Earthquake magnitude is a measure of the effects of a quake in certain location
4-
The devices used to record the seismic waves are called seismograms
5-
Saltation is a term used to describe the adding process of salt in a rock
6-
The bed load carried by wind consists of moderate to large sand grains
7-
The water table level is the top surface of the saturation zone
8-
The amount of water flow is in a direct relationship with the porosity
9-
The water table level is not always horizontal
No.
(25 marks)
10- Permeable rock strata or sediment that transmit groundwater freely are called
aquifers
11- The process of expanding and cracking of rocks due to freezing and thawing of
water inrock voids is called thermal expansion
12- The asthenosphere is divided into a dozen tectonic plates
13- Diamonds originate more than 150 km deep in the Earth
14- Silicate minerals are classified according to their internal arrangement of silica
tetrahedra
15- The seismic wave which does not propagate through fluids is called surface waves
16- Faults in rocks occur due to elastic deformation
17- One type of faults is the anticline faults
18- Organic soils can be dealt with as a good material for construction
19- Sand dunes have a well graded grain size distribution
20- Corndum has lower hardness than quartz
21- Kaolinite mineral is a clay mineral with 1:2 basic unit structure
22- The loose fragmental debris produced by the mechanical breakdown is called detrital
23- The cobble gravel size is smaller than the pebble size
24- An example of inorganic nonclastic chemical sedimentary rocks with
microcrystalline quartz is quartz sand stone
25- The high metamorphism of basalt gives a new rock called green schist
Question (2) : Choose the correct answer
(24 marks)
1-
2-
3-
4-
5-
6-
7-
8-
9-
10
11
The dominating and controlling factor in regional metamorphism is
- Rise in temperature
- Rise in pressure
- Both rise in temperature and pressure
which of the following has the highest density of the earth layers
- mantle
- crust
- lithosphere
- core
Limestone composed mainly of
- clay minerals
- calcite minerals
- carbonate minerals
- corundum minerls
Which of the following igneous rocks has high silica content
- dykes
- granite
- diorite
- gabbro
Near the ground surface, the rocks are commonly
- ductile
- brittle
- both ductile and brittle
Most ground water came from:
- leakage from the interior of the earth
- infiltration from oceans
- rainfalls
- all of the above
The portion of the subsurface where the pores are partially filled with water is
- zone of aeration
- saturated zone
- subduction zone
- unsaturated zone
Plate tectonics:
- is a theory to explain how continents drift through
oceanic crust
- originated when the first oceanic crust formed 200
million years ago
- is driven by convection cells in the mantle
- explains why the Earth has a magnetic field
The flakiness of mica minerals (biotite and muscovite) is due to the presence of:
- covalent bonds
- ionic bonds
- Van der Waals bonds
- metallic bonds
Porphyritic texture (bigger crystals in a finer matrix) in an igneous rock is a good
indicator of:
- chemical composition
- cooling history
- partial melting
- rate of subduction
The location of the epicenter of an earthquake is determined using
- the time interval between P and S waves
12
13
14
15
- the time interval between P and Surface waves
- the time interval between S and Surface waves
- the time interval between P and Stress waves
The name of the sea deposits is
- loess
- alluvium
- ooz
- breccia
Flowing artesian wells are those where
- the pressure level is higher than the ground surface
- the pressure level is lower than the ground surface
- the pressure level is at the ground surface
- all of the above
If excessive puming of wells occur, the following could happen
- increase of water level in other places
- salt water contamination
- ground water pollution
- all of the above
The application of high grade metamorphism on granite produces
- slate
- gneiss
- phyllite
- marble
Question (3): Give the reasons for the following cases
(30 marks)
(1) Explain the theory which describes the mechanism of earthquakes?
(2) For the following rocks give details of the sequences of events which lead to their formation:
-
Basalt
-
Sandstone
-
marble
(1) Explain the hydrologic cycle? Use sketch
(2) Draw the types of folds? And give the names of these folds
(3) Draw the types of faults? And give the names of these faults
Question (4)
(21 marks)
(1) Write short note about earthquake prediction?
(2) Explain the mechanical weathering? Explain briefly the conditions under which this
weathering occurs?
(3) What are the types of metamorphic rocks? Give two examples of each type?
(4) From what you have studied, how ground water can be polluted?
Lecturer: Raed M. Khaldi