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STS - Natural Resources > Natural Resources > Flashcards

Natural Resources Flashcards

1
Q

Source of products that are inherent to earth

A

Natural Resources

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2
Q

Two types of natural resources

A

Renewable and Nonrenewable

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3
Q

Examples of Renewable resources

A

Solar energy
Air/wind, Water/tides,
Soil/plants

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4
Q

Example of nonrenewable resources

A

Fossil Fuels
Metallic
Nonmetallic

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5
Q

example of fossil fuels

A

Oil
Coal
Natural Gas

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6
Q

Example of metallic minerals

A

Iron
Copper
Aluminum

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7
Q

example of nonmetallic minerals

A

Salt
Phosphates

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8
Q

Enlarging of human population putting pressure on the utilization of almost all natural resources.

A

Overpopulation which brings about over-exploitation

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9
Q

Such practices have claimed much space of the natural resources because farmers resort to converting forests and grasslands to croplands

A

Intensive Agricultural and Farming Practices

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10
Q

The severe changes in climate pattern as a result of human activities and overpopulation that generate greenhouse gases and carbon footprint in the atmosphere threatens biodiversity as well as other numerous natural resources

A

Climate Change and Global Warming

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11
Q

The majority of natural resources have been destroyed and a large portion is under immense threat due to toxic substances and chemicals emitted from industries, homemade utilities, and agricultural products among other processed materials.

A

Environmental Pollution

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12
Q

This lifestyle humans demand more comfortable living in
terms of education, entertainment, recreation, transport, clothing, and
shelter which will demand use of more resources and more production.

A

20th Century lifestyle

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13
Q

This often causes over-exploitation of the natural resources

A

Overpopulation which brings about over-exploitation

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14
Q

8R’s in saving natural resources

A

Reuse
Repurpose
Rot
Repair
Recycle
Refill
Reduce
Refuse

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15
Q

Causes of energy crisis

A

Overconsumption
Overpopulation
Poor infrastructure
Unexplored renewable energy options
Delay in commissioning of power plants
Waste of energy
Poor distribution
Major accidents and natural calamities
Water attacks
Miscellaneous Factors (strikes, political events, tax hikes)

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16
Q

One of the latest technologies nowadays that can
secure the earth’s energy requirement and at the same
time address the issues of climate change

A

Ocean thermal energy conversion

17
Q

Three types of Ocean thermal energy conversion (OTEC)

A

Closed cycle or Anderson OTEC cycle
Open cycle or Claude OTEC cycle
Hybrid System

18
Q

Which OTEC system:

A fluid with low boiling point like the ammonia is used to power up turbine in order to generate electricity.

A

Close cycle or Anderson OTEC cycle

19
Q

Which OTEC system:

The heat exchanger pumps the warm surface seawater, where the ammonia is vaporized. It then turns the turbogenerator.

A

Close cycle or Anderson OTEC cycle

20
Q

Which OTEC system:

The second heat generator now pumps the cold deep seawater then
condenses the vapor back into a liquid.

A

Close cycle or Anderson OTEC cycle

21
Q

Which OTEC system:

The warm seawater is placed in a low-pressure container to boil. The steam produced powers the turbine attached to an electrical generator.

A

Open cycle or Claude OTEC cycle

22
Q

Which OTEC system:

The steam produced is salt free, almost pure and fresh water. Once exposed to cold temperatures from deep ocean water, the steam will be condensed back into liquid.

A

Open cycle or Claude OTEC cycle

23
Q

This OTEC system combines the features of both Closed and Open cycle.

A

Hybrid system

24
Q

Which OTEC system:

The OTEC power plants are of two different kinds. There are floating power plants or sea based and
another is the land based. Both land and sea-based power plants work almost the same.

A

Hybrid system

25
Q

Advantages of OTEC technology

A

Produces clean, green renewable energy
No chemical pollution
Does not involve burning fossil fuels
Provides potable water from the ocean
Produces fuels such as hydrogen
Can be used for aquaculture, refrigeration and air conditioning

26
Q

Disadvantages of OTEC

A

Only suitable in tropical areas
Electricity produced is costly
Construction of OTEC powerplants requires great amount of investment
Construction of powerplants may damage coral reefs and marine ecosystem
OTEC may result to political concerns

27
Q

Current Issues the environment is today

A

Air Pollution
Water Pollution
Soil and land pollution
Climate change
Global warming
Deforestation
Increasing Carbon footprint
Genetic modification
Effect on marine life
Public health issues
Overpopulation

STS - Natural Resources (4 decks)

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