Topic 12

Question 1

It is the changes in the natural hydrologic processes due to landslides and earthquakes.

a. Natural Disasters
b. Agriculture
c. Deforestation
d. Urbanization

Answer 1

a. Natural Disasters

Question 2

This is the amount of salt dissolved in water.

a. Salinity
b. Saltiness
c. Brininess
d. Saltification

Answer 2

a. Salinity

Question 3

According to Tarbuck’s 12th edition of Introduction to Physical Geology, glaciers and ice sheets make up about _____, groundwater at about _____, and surface water and other freshwater at about ____ in freshwater.

a. 73.1%, 20.2%, 6.7%
b. 73.1%, 20.1%, 6.8%
c. 68.6%, 30.2% 1.2%
d. 68.6%, 30.1%, 1.1%

Answer 3

d. 68.6%, 30.1%, 1.1%

Question 4

This river flows through the municipalities of Valencia and Dumaguete City. It is 20.7
kilometers long and covers 3,795 hectares of land.

a. Ocoy River
b. Banica River
c. Banilad River
d. Poblacion River

Answer 4

b. Banica River

Question 5

At type of water derived from precipitation.

a. Connate
b. Meteoric
c. Magmatic
d. Seawater

Answer 5

b. Meteoric

Question 6

Sedimentary rocks are attacked by acids (carbonic acid) H₂CO₃ which causes them to
break down and have a result of ___ bicarbonate ions.

a. 1
b. 2
c. 3
d. 4

Answer 6

b. 2

Question 7

What is the movement of saline water into freshwater aquifers, which can lead to
groundwater quality degradation?

a. Acid rain water
b. Acid mine drainage
c. Saltwater Intrusion
d. Coastal water pollution

Answer 7

c. Saltwater Intrusion

Question 8

What is the earliest evidence of surface water on earth?

a. Obducted Ophiolite
b. Banded Iron formation
c. Karst environments
d. Stromatolites

Answer 8

b. Banded Iron formation

Question 9

What is the joint venture company of Dumaguete City Water District (DCWD) and Metro Pacific Water (MPW) that provides improved water distribution services to Dumaguete and nearby communities?

a. Metro Dumaguete WaterS (MDW)
b. Metro Monitoring Water (MMW)
c. Metro Dumaguete City Water (MDCW)
d. Metro Dumaguete Water (MDW)

Answer 9

d. Metro Dumaguete Water (MDW)

Question 10

What is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in each water sample at certain temperature over a specific time?

a. Acid rain water
b. Biochemical Oxygen Demand
c. Saltwater Intrusion
d. Acid Mine Drainage

Answer 10

b. Biochemical Oxygen Demand

Question 11

The presence of small particles called metal ions that makes water hard are as follows,
except:

a. Iron
b. Calcium
c. Magnesium
d. Sodium

Answer 11

d. Sodium

Question 12

__________ is where the soil or rock pores contain both air and water, but are not fully
saturated with water.

a. Saturated Zone
b. Vadose Zone
c. Confined Aquifer
d. NOTA

Answer 12

b. Vadose Zone

Question 13

_________ is a water-bearing rock unit; an underground geological formation capable of holding water.

a. Aquifer
b. Watershed
c. Recharge Area
d. Aquitard

Answer 13

a. Aquifer

Question 14

A species of meteoric water that is enriched with dissolved metals at 300 degrees Celsius.

a. Meteoric geothermal water
b. Meteoric spring water
c. Meteoric water
d. Rainwater

Answer 14

a. Meteoric geothermal water

Question 15

How much Chlorine is dissolved in seawater?

a. 55%
b. 45%
c. 65%
d. 35%

Answer 15

a. 55%

Question 16

The Philippine Clean Water Act of 2004, also known as ________, is a law that protects the country’s water resources from pollution

Answer 16

R.A. 9275

Question 17

_________ an area of land drained by a river and its tributaries.

Answer 17

River basins

Question 18

This is a measure of how steep the slope of the water table is. It tells us how quickly
water moves from one point to another underground

Answer 18

Hydraulic Gradient

Question 19

Marine organisms use the _____ to construct their skeletons and shell.

Answer 19

bicarbonate ions /
HCO₃⁻¹

Question 20

A liquid that emits vapor or can easily convert into vapor at normal temperature and pressure is called a ________.

Answer 20

volatile liquid

Question 21

__________ is water contamination by sulfuric acid produced by seepage through sulfur-bearing spoil and tailings from coal and metal mining

Answer 21

Acid Mine Drainage

Question 22

_____ is the density of water in a solid phase.

Answer 22

0.917 g/c3

Question 23

The earliest evidence of Surface water dates to _________.

Answer 23

3.8 billion years ago

Question 24

When a well is drilled, the water level in the well rises above the top of the aquifer due to this pressure and if the pressure is strong enough, water can flow out of the well without needing a pump, creating what is called an ____________.

Answer 24

Artesian Well

Question 25

_________ is the area of land that generates total runoff for a particular stream system

Answer 25

Watershed

Question 26

______ is the central theme in creation myths from many cultures. This is the water that existed before Earth was formed.

Answer 26

Primordial water

Question 27

An event that occurred around 4-3.8 billion years ago where the outer planets’ orbit
shifted, resulting in comets being sent to earth

Answer 27

Late Heavy Bombardment

Question 28

_________ is water that travels laterally or horizontally through the zone of aeration
during or immediately after a precipitation event and discharges into a stream or other body of water base flow

Answer 28

Interflow

Question 29

The reaction of water with other substances is called _________.

Answer 29

Hydrolysis

Question 30

. ______ is water abstraction from rivers

Answer 30

Sedimentation