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GeoChemistry > Topic 7 > Flashcards

Topic 7 Flashcards

1
Q
  1. The process in which the atmospheric Nitrogen (N2) is converted into a usable form - Ammonia (NH3)

a. Nitrogen fixation
b. Nitrification
c. Assimilation
d. Ammonification

A

a. Nitrogen fixation

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2
Q
  1. The process in which Ammonia is converted into Nitrate by the presence of bacteria in the soil.

a. Nitrogen fixation
b. Nitrification
c. Assimilation
d. Ammonification

A

b. Nitrification

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3
Q
  1. The process in which plants take in the Nitrogen compounds form the soil.

a. Nitrogen fixation
b. Nitrification
c. Assimilation
d. Ammonification

A

c. Assimilation

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4
Q
  1. The process in which the Nitrogen present in the organic matter is released back into the soil.

a. Nitrogen fixation
b. Nitrification
c. Ammonification
d. Denitrification

A

c. Ammonification

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5
Q
  1. The process in which the nitrogen compounds makes its way back into the atmosphere by converting Nitrate (NO3-) into gaseous Nitrogen (N)

a. Nitrogen fixation
b. Nitrification
c. Assimilation
d. Denitrification

A

d. Denitrification

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6
Q

Which is the correct order of the evolution of the Earth’s Atmosphere?
I. Modern Atmosphere
II. Great Oxygenation Event
III. Early Earth Atmosphere
IV. Neoprotorezoic Oxygen Increase
V. Protorezoic Oxygen Increase

a. III, II, V, IV, I
b. III, II, IV, V, I
c. III, V, II, IV, I
d. III, IV, II, V, I

A

a. III, II, V, IV, I

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7
Q

Which reservoir holds the most oxygen?

a. Biosphere
b. Hydrosphere
c. Atmosphere
d. Lithosphere

A

d. Lithosphere

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8
Q

Odd man out:

a. Oxygen
b. Water
c. Carbon Dioxide
d. NOTA

A

a. Oxygen

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9
Q

A carbon cycle process in which burning fossil fuels and biomass releases large amounts of CO2 into the atmosphere is called?

A. Ignition
B. Burning
C. Combustion
D. Carbon emissions

A

C. Combustion

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10
Q

The _________ balances more quickly than the other subsystems of the earth due to its dynamic nature and rapid chemical reactions.

a. Hydrosphere
b. Atmosphere
c. Lithosphere
d. NOTA

A

b. Atmosphere

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11
Q

The average ozone level over the entire globe is 300 Dobson Units. In what year was the worst year for ozone depletion in which the lowest values of 84 Dobson Units were observed?

a. 1980
b. 2015
c. 2006
d. 2008

A

c. 2006

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12
Q

Sulfur (S) is an essential macronutrient for plant growth and development. What form of sulfur that plant roots are only able to take up?

a. SO42-
b. SO2
c. CO2
d. Sulfuric Acid

A

a. SO42-

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13
Q

The following are changes in the water cycle during colder climatic periods except?

A. Decrease atmospheric water vapor
B. Sea ice expansion
C. Altered precipitation patterns
D. Stronger atmospheric circulation

A

D. Stronger atmospheric circulation

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14
Q

Old glaciers have been dated to be around how many years old?

A. 6.5x10^5
B. 6.5x10^4
C. 6.5x10^6
D. 6.5x10^7

A

A. 6.5x10^5

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15
Q

Groundwater constitutes how many percent of Earth’s total water?

A. 6.5x10^(-2)
B. 6.5x10^2
C. 6.5x10^(-1)
D. 6.5x10^1

A

C. 6.5x10^(-1)

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16
Q

is a biogeochemical process through which nitrogen is converted into many forms.

A

Nitrogen Cycle

17
Q

Form of nitrogen that exists in living organisms, and they get passed through the food chain by the consumption of other living organisms.

A

Organic nitrogen

18
Q

Form of nitrogen that are found in abundance in the atmosphere.

A

Inorganic forms

19
Q

is the primary mineral with significant phosphorus content

A

Apatite [Ca5(PO4)3OH]

20
Q

The entire process of Nitrogen fixation is completed by this bacteria.

A

Nitrogen-fixing bacteria

21
Q

refers to the pathways where nature and aspects of the Earth’s hydrosphere interact with surficial rocks, sediments, soils, the biosphere, and the atmosphere.

A

Geochemical cycle

22
Q
  1. The word sulfur comes from the Latin word sulphurium, which means
A

Burning Stone.

23
Q

is a metallurgical process that involves heating ore, usually mixed with other substances, to high temperatures to extract desired metal base product(s).

A

Smelting

24
Q

About 2.4 billion years ago the _________________, led to a significant increase in oxygen levels, which played the key role in life as we know it today

A

Great Oxygenation Event

25
Q

is when plants absorb water from the ground and release it into the atmosphere as water vapor combined with water vapor from bodies of water.

A

Evapotranspiration

26
Q

The Borate BO3 ion has a charge (valence) of

A

-3

27
Q

Is called when the ocean absorbs CO2 from the atmosphere, but this absorption is influenced by factors like temperature and ocean currents.

A

Ocean-Atmosphere Exchange

28
Q

is a process in which some precipitation soaks into the ground and seeps into the soil through pores and cracks.

A

Infiltration

29
Q

is a carbon cycle process in which carbonate rocks form through the accumulation of marine organisms’ shells and skeletons. The process removes Carbon from the ocean and stores it in geological formations.

A

Sedimentation

30
Q

is the continuous movement of water on, above, and below the surface of the Earth.

A

Water Cycle

GeoChemistry (7 decks)

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