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Preliminary Exam 2nd Sem AY 2022-2023

Total questions: 90

Worksheet time: 45mins

Name
Class
Date
1.

Protects the earth from the damaging UV radiation

a)

O3

b)

H2O

c)

N2

d)

O

2.

The pressure __________as altitude increases.

a)

stay the same

b)

decreases

c)

increases

d)

stationery

3.

The following are uses of O2 except______

a)

burning of fuels

b)

decay of rocks

c)

utilizing energy from food

d)

for photosynthesis

4.

Trapping infrared radiation of water vapor, carbon dioxide, etc. to keep the earth warm.

a)

greenhouse effect

b)

global warming

c)

climate change

5.

Reacts to sulfur compounds to form acid rain

a)

sulfuric acid

b)

carbonic acid

c)

hydrogen sulfide

d)

nitrogen oxide

6.

The following are effects of acid rain except

a)

corrosion

b)

death of organism

c)

respiratory problems

d)

smog

7.

Region in the atmosphere where aircraft flies

a)

troposhere

b)

tropopause

c)

stratosphere

d)

stratopause

8.

Region in the atmosphere where weather occurs

a)

troposhere

b)

tropopause

c)

stratosphere

d)

stratopause

9.

This interaction between the atmosphere and geothermal energy is responsible for weather and climate.

a)

True

b)

False

10.

Above Earth’s surface

and contains a layer of ozone critical to life

because it absorbs much of the sun’s

damaging ultraviolet radiation.

a)

Stratosphere

b)

Troposphere

c)

Mesosphere

d)

Stratopause

11.

A colorful display of lights in dark

polar skies which is produced when charged particles from the sun hit oxygen or nitrogen molecules in the thermosphere.

a)

rainbow

b)

clouds

c)

aurora

d)

ozone

12.

The ability of gases to absorb infrared radiation and therefore warm the troposphere.

a)

greenhouse gases

b)

greenhouse effect

c)

Coriolis effect

d)

ozone depletion

13.

The influence of Earth’s rotation,

which tends to turn fluids (air and water) toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere.

a)

greenhouse effect

b)

Coriolis effect

c)

aurora phenomenon

d)

revolution

14.

Tropical winds that generally blow from the northeast in the Northern Hemisphere or from the southeast in the Southern Hemisphere.

a)

polar easterlies

b)

westerlies

c)

trade winds

d)

tropical depression

15.

Weather, including turbulent wind, storms, and most clouds, occurs in this layer.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

16.

Temperatures drop steadily in this layer to the lowest in the atmosphere as low as -138°C.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

17.

Important in long-distance communication because it reflects outgoing radio waves back to Earth without the aid of satellites

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

18.

It is where meteor burns up from friction with air molecules.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

19.

The warm surface near the equator heats the air in contact with it, causing this air to expand and rise.

a)

conduction

b)

convection

c)

radiation

d)

fusion

20.

Complex horizontal movements of the atmosphere.

a)

winds

b)

clouds

c)

aurora

d)

radiation

21.

Used as access points for maintenance in Qanats.

a)

Mother well

b)

Access shaft

c)

Channel

d)

Distribution

22.

Bodies of saturated rocks or geological formations through which volumes of water find their way (permeability) into wells and springs.

a)

Aquifers

b)

Dams

c)

Wells

d)

Groundwater

23.

Groundwater may be used as an outlet of heat for energy-efficient commercial and residential heating/cooling systems.

a)

True

b)

False

24.

Act as conduits for transmission and as reservoirs for storing groundwater

a)

aquifer

b)

water table

c)

qanat

d)

grouwater

25.

Advantage/s of groundwater as a source of water.

a)

water must be pumped

b)

recharge opportunity usually dependent on surface water flow

c)

high biological purity

d)

water maybe available by gravity flow

26.

In general, the soil above the water table is saturated, and it is unsaturated below the water table

a)

True

b)

False

27.

Which of the following statement/s is/are false about unconfined aquifers?

a)

The lower surface of the zone of saturation in aquifers that are not confined by impermeable geologic material is called the water table.

b)

The smaller void spaces in the geologic material just above the water table may contain water as a result of interactive forces between the water and the soil.

c)

The process of soil drawing water above its static level is known as surface tension.

28.

In the figure, which has the pressurized water?

a)

water table

b)

unconfined aquifer

c)

confined aquifer

d)

confining bed

29.

A lens of water held above the surrounding water table by an impervious geologic layer, such as bedrock or clay.

a)

perched aquifer

b)

aquicludes

c)

aquitards

d)

artesian

30.

The system is analogous to a manometer with restriction.

a)

unconfined aquifer

b)

confined aquifer

c)

artesian aquifer

d)

perched aquifer

31.

The water in a confined aquifer may be under considerable pressure due to the permeable nature of the confining layers, which allow flow, or due to elevation differences in the aquifer.

a)

True

b)

False

32.

The greater the vertical distance between the recharge area and the bottom of the top confining layer, the higher the height of the water, and the higher the pressure.

a)

True

b)

False

33.

It is the measure of the pressure in an aquifer.

a)

piezometric head

b)

piezometric surface

c)

piezometer

d)

height of the water in the tube

34.

Head of location 1 minus the head of location 2, divided by the distance between the 2 locations.

a)

piezometric head

b)

hydraulic gradient

c)

head loss

d)

volume gradient

35.

Aquicludes allow more water than aquitards.

a)

True

b)

False

36.

The percentage of a rock's total volume that is taken up by pore space is called the _______.

a)

permeability

b)

recharge

c)

aquifer

d)

porosity

37.

Permeability is __________ .

a)

the ability of a solid to allow fluids to pass through

b)

the process by which plants release water vapor to the atmosphere

c)

the amount of water vapor in the air relative to the maximum amount of water vapor the air can hold.

d)

the percentage of pore space in the rock

38.

The best groundwater reservoirs have __________ .

a)

low permeability and low porosity

b)

low permeability and high porosity

c)

high permeability and low porosity

d)

high permeability and high porosity

39.

The ability of an Earth material to transmit water is a measure of its:

a)

porosity

b)

aquifer characteristics

c)

chemical cement

d)

permeability

40.

A local water table positioned above the regional water table is said to be:

a)

saturated

b)

perched

c)

displaced

d)

unsaturated

41.

The boundary between the saturated zone and the unsaturated zone is called the______ .

a)

water table

b)

aquifer

c)

aquiclude

d)

porosity

42.

What is the term for a relatively impermeable geologic unit?

a)

an artesian

b)

an aquiclude

c)

an aquifer

d)

a zone of saturation

43.

Which of the following rocks has the highest permeability?

a)

an unfractured shale

b)

a cemented sandstones

c)

an uncemented sandstone

d)

all of these rocks have approximately the same permeability

44.

What is the difference between the saturated and the unsaturated zones of ground water?

a)

the saturated zone has a higher porosity than the unsaturated zone

b)

the saturated zone has a lower porosity than the unsaturated zone

c)

the pore spaces in the saturated zone are completely full of water; the pore spaces in the unsaturated zone are not completely full of water.

d)

the pore spaces in the saturated zone are not completely full of water; the pore spaces in the unsaturated zone are completely full of water

45.

Which of the following can contaminate an aquifer?

a)

landfills

b)

agricultural regions

c)

gas stations

d)

all of these

46.

Ilocos Norte ranked second with 49.3 thousand farms, covering 37.3 thousand hectares while Ilocos Sur came in third with 46.9 thousand farms, covering 36.1 thousand hectares. The groundwater resources of the two provinces are most likely contaminated with:

a)

chlorine

b)

arsenic

c)

fluoride

d)

selenium

47.

Most common nitrogen compound contaminant in groundwater

a)

NO3

b)

NO2-

c)

NH4+

d)

N2

48.

Low porosity always mean low permeability, and high porosity always mean high permeability.

a)

True

b)

False

49.

The property of porous media where in the amount of water being stored depends on the surface area of the soil or rock is _________.

a)

specific retention

b)

specific yield

c)

void ratio

d)

moisture content

50.

A groundwater contaminant of about 1-2 mg/L can lead to explosion when no proper ventilation is maintained.

a)

methane

b)

oxygen

c)

nitrogen

d)

carbon dioxide

51.

Green plants and algae use inorganic carbon in the form of the following compounds except...

a)

carbon dioxide

b)

bicarbonate

c)

carbonate

d)

carbonic acid

52.

In a photosynthetic reaction, how many moles of oxygen molecule is produced when 8400 kJ of energy from the sun is used up?

a)

6

b)

12

c)

18

d)

24

53.

Carbon tetrachloride and ethanol (ethyl alcohol) are individually toxic to the liver, but together they produce much more liver injury than the sum of their individual effects on the liver. This is an example of ___________.

a)

Synergistic effect

b)

Antagonistic effect

c)

Additive effect

d)

Potentiation

54.

Identify the different abiotic components within the picture given.

a)

sunlight & heat

b)

insects

c)

mounds

d)

protozoans

e)

rotting log

55.

Detritus feeders work with microbial decomposers to destroy dead organisms and wastes products.

a)

True

b)

False

c)

Cannot be determined

56.

In a terrestrial setting, what organism is at the highest trophic level.

a)

whales

b)

shark

c)

humans

d)

grasshopper

57.

They play a very important role in the environment due to their capability to breakdown complex substances ready for reuse and recycle of important chemical nutrients necessary to sustain ecological interactions.

a)

saprotrophs

b)

detritus feeders

c)

heterotrophs

d)

autotrophs

58.

The intersection point of the Earth's three physical environments, where biotic and abiotic interaction happens.

a)

atmosphere

b)

hydrosphere

c)

lithosphere

d)

biosphere

59.

Using the rule of thumb that 10% of the energy consumed is used in the production of biomass, calculate the LEAST possible amount of energy consumed by the frog through the food chain depicted in the figure, assuming that the Berries/Plantain contains 1000 joules of energy.

a)

1000

b)

100

c)

10

d)

1

e)

0.1

60.

The following are factors affecting the toxicity of a certain chemical except:

a)

type of compound

b)

duration of exposure

c)

concentration of the contaminant

d)

origin of contaminant

61.

Omnivores may be considered as either primary, or secondary/tertiary consumers.

a)

false

b)

true

c)

cannot be determined

62.

It shows how organisms and their food chains are represented in various complex relationships.

a)

food web

b)

producer-consumer relationships

c)

food linking

d)

trophic level

63.

The absence of energy from the sun during the night is not a hindrance to producers to sustain their biological processes. They undergo the so called aerobic respiration where a particular chemical oxidized to form carbon dioxide, water and energy. What is/are this/these chemical compound/s?

a)

glucose

b)

oxygen

c)

nitrogen

d)

phosphorus

e)

starch

64.

Typically, mercury is taken up by bacteria and phytoplankton. Small fish eat the bacteria and phytoplankton and accumulate the mercury. The small fish are in turn eaten by larger fish, which can become food for humans and animals. This situation can describe the phenomenon called ______________.

a)

Bioconcentration

b)

Bioaccumulation

c)

Biomagnification

d)

Biosynthesis

65.

Inhalation of certain acid vapours at concentrations may, over long periods of time, cause loss of tooth enamel, eventually leading to extensive tooth decay. This is an example of...

a)

Acute toxicity

b)

Chronic Toxicity

c)

Immediate Toxicity

d)

Carcinogenic Toxicity

66.

As energy flows through the food chain, it is converted to heat and is lost as useful nutrient.

a)

True

b)

False

c)

Cannot be determined

67.

Conversion of organic nitrogen to ammonium/ammonia nitrogen.

a)

Deamination

b)

Denitrification

c)

Nitrification

d)

Oxidation

68.

Growth-limiting nutrient of organisms.

a)

Carbon

b)

Nitrogen

c)

Phosphorus

d)

Sulfur

69.

Enzyme that speeds up the oxidation of hydrogen sulfide converting it to sulfuric acid.

a)

Thiobacillus

b)

Acetylcholinesterase

c)

Helicase

d)

Maltase

70.

While insulin lowers blood sugar, glucagon raises it. Thus, regulating the major physiological function of these two chemicals is crucial in order to keep up a healthy level of glucose in blood. This is an example of ___________.

a)

Synergistic effect

b)

Antagonistic effect

c)

Additive effect

d)

Potentiation

71.

Water is one of the few substances that can be found in all three states within the earth's climatic range.

a)

True

b)

False

c)

Cannot be determined

72.

Water acts as a climate ameliorator through the power absorbed and released during transformation between the different phases.

a)

True

b)

False

c)

Cannot be determined

73.

The solvent properties of water prevent the uptake of vital nutrients from the soil and into plants; this then allows the transfer of the nutrients within a plant's structure.

a)

True

b)

False

c)

Cannot be determined

74.

In places such as Norway, parts of the USA and New Zealand energy generation for domestic and industrial consumption is through hydro-electric schemes, harnessing the combination of water and gravity in a sustainable manner. What device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft?

a)

Turbine

b)

Generator

c)

Electrolytic Cells

d)

Reactor

75.

It is the bond existing between atoms in a water molecule which makes a stable pair through sharing of electrons.

a)

covalent bonding

b)

ionic bonding

c)

hydrogen bonding

d)

van der Waals interaction

76.

The partial negative charge on the O of one molecule can form a bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions. This phenomenon occurs due to existence of a certain type of bond called...

a)

hydrogen bond

b)

covalent bond

c)

ionic bond

d)

van der Waals forces

77.

The robustness of the water molecule means that it stays as a water molecule within our atmosphere because there is not enough energy available to break the ionic bonds and create separate oxygen and hydrogen molecules.

a)

True

b)

False

78.

The main reason why ice floats in liquid water.

a)

Given the same masses, ice has a bigger volume compared to the volume of liquid water.

b)

Ice contains air which makes it float in liquid water.

c)

Given the same volume, ice has a smaller mass compared to the mass of a liquid water.

79.

Among hydrogen, air, oil SAE 10 and Oil no. 3, which of them flows fastest at 70 deg C?

a)

hydrogen

b)

air

c)

oil SAE 10

d)

Oil no. 3

80.

Defined as the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 kelvin.

a)

specific heat capacity

b)

density

c)

latent heat

d)

viscosity

81.

Heating causes the movement of water molecules and that the movement requires the breaking of the hydrogen bonds linking them. The large amount of energy required to break the ionic bonds in water gives it such a high specific heat capacity.

a)

True

b)

False

82.

It is calculated by taking the moles of solute and dividing by the kilograms of solution.

a)

Molarity

b)

Molality

c)

Part per million

d)

Percent by weight

e)

None of the above

83.

Water on the surface of spongy and palisade cells (inside the leaf) evaporates and then diffuses out of the leaf through the stomata. As the xylem cells make a continuous tube from the leaf, down the stem to the roots, this acts like a drinking straw, producing a flow of water and dissolved minerals from roots to leaves. The process described above is what we call the __________.

a)

Evaporation

b)

Transpiration

c)

Evapotranspiration

d)

Precipitation

84.

The rate of flow of water measured in volume per area of the stream.

a)

volumetric flowrate

b)

volumetric flux

c)

mass flowrate

85.

As the time from the beginning of storm increases, what happens to the infiltration capacity into soil based on the Horton's Equation?

a)

decreases

b)

increases

c)

remains the same

d)

cannot be determined

86.

Precipitation in the water balance equation represents the main input of water to a surface. Precipitation is a flux of either rainfall or snowfall.

a)

True

b)

False

87.

The storage term includes soil moisture, deep groundwater, water in lakes, glaciers, seasonal snow cover. The runoff flux is the movement of liquid water above and below the surface of the earth.

a)

True

b)

False

c)

Cannot be determined

88.

Portion of precipitation that infiltrates into the soil and moves horizontally through the shallow soil horizon without ever reaching the water table.

a)

Streamflow

b)

Baseflow

c)

Interflow

d)

Overflow

89.

It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth

a)

Evaporation

b)

Transpiration

c)

Evapotranspiration

d)

Precipitation

90.

Water that exists underground in saturated zones beneath the land surface.

a)

runoff

b)

watershed

c)

baseflow

d)

groundwater