Vanishing Worlds

Worlds vanish, 100 flashcards, yeah.

Causes of Climate Change (Natural)

This refers to the process driven by natural variations in the climate system, including changes in solar output, orbital shifts, and volcanic emissions, ultimately influencing global temperatures.

Causes of Climate Change (Human)

This refers to the process driven by anthropogenic alterations to the climate system, including the burning of fuels, land-use changes, and agricultural practices, ultimately influencing global temperatures.

The Greenhouse Effect

This is the natural phenomenon involving certain atmospheric gases that trap heat from the sun, maintaining a stable range of global temperatures suitable for life.

Enhanced Greenhouse Effect

This is the intensified phenomenon involving increased atmospheric gases that trap excess heat from the sun, leading to a sustained rise in global temperatures beyond natural levels.

Fossil Fuels

These are carbon-based energy sources formed from ancient organic matter, which when combusted, release stored carbon into the atmospheric system.

Milankovitch Cycles

These are periodic variations in Earth's orbital geometry and axial tilt, which alter the distribution of solar radiation received and drive long-term climatic shifts.

Solar Radiation

This is the electromagnetic energy emitted by the sun, fluctuations in which can alter the amount of heat entering the Earth's atmospheric system.

Volcanic Activity

This involves the ejection of ash and sulfur compounds into the stratosphere, which can temporarily reduce surface temperatures, while also contributing CO2 to the atmosphere.

Deforestation

This is the large-scale removal of forest cover, which alters the carbon storage capacity and hydrological functions of the terrestrial environment.

Carbon Sink

This is a natural or artificial reservoir that absorbs more carbon from the atmosphere than it releases, thereby reducing the net concentration of greenhouse gases.

Deforestation & CO2

This describes the process where cleared vegetation, through burning or decay, releases sequestered carbon back into the atmosphere, thereby increasing overall greenhouse gas concentrations.

Deforestation & the Water Cycle

This describes the process where reduced vegetative cover diminishes atmospheric moisture recycling, thereby reducing regional precipitation and altering local hydrological regimes.

Deforestation in the Amazon

This describes the process in a major tropical basin driven by agricultural expansion and resource extraction, leading to significant carbon emissions and a reduction in ecological diversity.

Soil Erosion

This is the physical removal of the upper fertile layer of earth, a process accelerated by the loss of stabilizing root structures, resulting in land degradation.

Biodiversity

This is the variety of species within a given ecosystem, a measure that declines sharply when habitats are fragmented or destroyed by external pressures.

Reef Threats (Coral Bleaching)

This is the stress-induced expulsion of symbiotic microorganisms from coral tissue, a phenomenon caused by elevated water temperatures, resulting in the loss of pigmentation and potential mortality.

Reef Threats (Ocean Acidification)

This is the chemical alteration of seawater chemistry due to absorbed atmospheric CO2, a phenomenon that reduces carbonate availability, resulting in weakened skeletal formation in marine organisms.

Reef Threats (Overfishing)

This is the depletion of predatory fish populations from reef systems, a disruption that alters trophic dynamics, resulting in unchecked algal growth and reduced coral resilience.

Reef Threats (Pollution)

This is the influx of chemical and organic contaminants from terrestrial runoff, a disruption that introduces excess nutrients, resulting in eutrophication and reduced light penetration.

Reef Threats (Sedimentation)

This is the deposition of suspended soil particles onto reef structures, a disruption that smothers living polyps, resulting in reduced photosynthetic activity and habitat degradation.

Importance of Coral Reefs

These are critical marine structures that provide coastal protection, support high faunal diversity, and sustain local economies through fisheries and tourism.

Symbiotic Relationship

This is the close biological interaction between two distinct species, specifically where coral polyps provide shelter to algae in exchange for photosynthetic products.

Rising Sea Levels

This is the progressive increase in the mean ocean surface elevation, a trend driven primarily by thermal expansion of water and the addition of meltwater from terrestrial ice.

Causes of Sea Level Rise

These are the two primary mechanisms responsible for oceanic volume increases: the thermal expansion of seawater as it warms and the transfer of water from land-based ice reserves.

Impacts of Sea Level Rise

These are the consequences of oceanic encroachment on coastal zones, including permanent inundation, increased storm surge vulnerability, and freshwater salinization.

Low-Lying Areas at Risk

These are coastal regions and island states with minimal topographic elevation, making them exceptionally susceptible to oceanic encroachment and tidal flooding.

Coastal Flooding

This is the temporary or permanent inundation of low-lying terrestrial areas by marine waters, an event whose frequency and severity are amplified by higher baseline sea levels.

Saltwater Intrusion

This is the landward movement of saline water into coastal freshwater aquifers, a process accelerated by rising sea levels, resulting in the contamination of groundwater supplies.

Glaciers

These are persistent, dense bodies of ice formed from compacted snow on land, which slowly deform and flow under their own weight over time.

Why Glaciers Matter

These ice bodies serve as major reservoirs of global freshwater, act as reflective surfaces influencing regional climate, and provide sustained discharge to river systems.

Glacial Retreat

This is the progressive shrinkage of ice mass and terminus position, a trend driven by higher atmospheric temperatures, resulting in reduced ice volume and areal extent.

Albedo Effect

This is the measure of a surface's reflectivity, where lighter ice surfaces deflect a larger fraction of incoming solar radiation, thereby influencing regional energy balance.

Impacts of Glacial Melt

These are the downstream consequences of ice mass depletion, including elevated ocean volumes, diminished summer river flows, and the loss of specialized cold-adapted species.

Feedback Loops (Positive)

This is a self-reinforcing cycle where an initial environmental change amplifies further changes, such as reduced reflectivity leading to more heat absorption and accelerated melting.

Glacial Melt and Water Supply

This describes the dependency of major perennial river systems on seasonal ice discharge, a relationship threatened by diminishing glacial reserves, resulting in future water scarcity.

Causes of Climate Change (Natural)

This refers to the process driven by natural variations in the climate system, including changes in solar output, orbital shifts, and volcanic emissions, ultimately influencing global temperatures.

Causes of Climate Change (Human)

This refers to the process driven by anthropogenic alterations to the climate system, including the burning of fuels, land-use changes, and agricultural practices, ultimately influencing global temperatures.

The Greenhouse Effect

This is the natural phenomenon involving certain atmospheric gases that trap heat from the sun, maintaining a stable range of global temperatures suitable for life.

Enhanced Greenhouse Effect

This is the intensified phenomenon involving increased atmospheric gases that trap excess heat from the sun, leading to a sustained rise in global temperatures beyond natural levels.

Fossil Fuels

These are carbon-based energy sources formed from ancient organic matter, which when combusted, release stored carbon into the atmospheric system.

Milankovitch Cycles

These are periodic variations in Earth's orbital geometry and axial tilt, which alter the distribution of solar radiation received and drive long-term climatic shifts.

Solar Radiation

This is the electromagnetic energy emitted by the sun, fluctuations in which can alter the amount of heat entering the Earth's atmospheric system.

Volcanic Activity

This involves the ejection of ash and sulfur compounds into the stratosphere, which can temporarily reduce surface temperatures, while also contributing CO2 to the atmosphere.

Deforestation

This is the large-scale removal of forest cover, which alters the carbon storage capacity and hydrological functions of the terrestrial environment.

Carbon Sink

This is a natural or artificial reservoir that absorbs more carbon from the atmosphere than it releases, thereby reducing the net concentration of greenhouse gases.

Deforestation & CO2

This describes the process where cleared vegetation, through burning or decay, releases sequestered carbon back into the atmosphere, thereby increasing overall greenhouse gas concentrations.

Deforestation & the Water Cycle

This describes the process where reduced vegetative cover diminishes atmospheric moisture recycling, thereby reducing regional precipitation and altering local hydrological regimes.

Deforestation in the Amazon

This describes the process in a major tropical basin driven by agricultural expansion and resource extraction, leading to significant carbon emissions and a reduction in ecological diversity.

Soil Erosion

This is the physical removal of the upper fertile layer of earth, a process accelerated by the loss of stabilizing root structures, resulting in land degradation.

Biodiversity

This is the variety of species within a given ecosystem, a measure that declines sharply when habitats are fragmented or destroyed by external pressures.

Reef Threats (Coral Bleaching)

This is the stress-induced expulsion of symbiotic microorganisms from coral tissue, a phenomenon caused by elevated water temperatures, resulting in the loss of pigmentation and potential mortality.

Reef Threats (Ocean Acidification)

This is the chemical alteration of seawater chemistry due to absorbed atmospheric CO2, a phenomenon that reduces carbonate availability, resulting in weakened skeletal formation in marine organisms.

Reef Threats (Overfishing)

This is the depletion of predatory fish populations from reef systems, a disruption that alters trophic dynamics, resulting in unchecked algal growth and reduced coral resilience.

Reef Threats (Pollution)

This is the influx of chemical and organic contaminants from terrestrial runoff, a disruption that introduces excess nutrients, resulting in eutrophication and reduced light penetration.

Reef Threats (Sedimentation)

This is the deposition of suspended soil particles onto reef structures, a disruption that smothers living polyps, resulting in reduced photosynthetic activity and habitat degradation.

Importance of Coral Reefs

These are critical marine structures that provide coastal protection, support high faunal diversity, and sustain local economies through fisheries and tourism.

Symbiotic Relationship

This is the close biological interaction between two distinct species, specifically where coral polyps provide shelter to algae in exchange for photosynthetic products.

Rising Sea Levels

This is the progressive increase in the mean ocean surface elevation, a trend driven primarily by thermal expansion of water and the addition of meltwater from terrestrial ice.

Causes of Sea Level Rise

These are the two primary mechanisms responsible for oceanic volume increases: the thermal expansion of seawater as it warms and the transfer of water from land-based ice reserves.

Impacts of Sea Level Rise

These are the consequences of oceanic encroachment on coastal zones, including permanent inundation, increased storm surge vulnerability, and freshwater salinization.

Low-Lying Areas at Risk

These are coastal regions and island states with minimal topographic elevation, making them exceptionally susceptible to oceanic encroachment and tidal flooding.

Coastal Flooding

This is the temporary or permanent inundation of low-lying terrestrial areas by marine waters, an event whose frequency and severity are amplified by higher baseline sea levels.

Saltwater Intrusion

This is the landward movement of saline water into coastal freshwater aquifers, a process accelerated by rising sea levels, resulting in the contamination of groundwater supplies.

Glaciers

These are persistent, dense bodies of ice formed from compacted snow on land, which slowly deform and flow under their own weight over time.

Why Glaciers Matter

These ice bodies serve as major reservoirs of global freshwater, act as reflective surfaces influencing regional climate, and provide sustained discharge to river systems.

Glacial Retreat

This is the progressive shrinkage of ice mass and terminus position, a trend driven by higher atmospheric temperatures, resulting in reduced ice volume and areal extent.

Albedo Effect

This is the measure of a surface's reflectivity, where lighter ice surfaces deflect a larger fraction of incoming solar radiation, thereby influencing regional energy balance.

Impacts of Glacial Melt

These are the downstream consequences of ice mass depletion, including elevated ocean volumes, diminished summer river flows, and the loss of specialized cold-adapted species.

Feedback Loops (Positive)

This is a self-reinforcing cycle where an initial environmental change amplifies further changes, such as reduced reflectivity leading to more heat absorption and accelerated melting.

Glacial Melt and Water Supply

This describes the dependency of major perennial river systems on seasonal ice discharge, a relationship threatened by diminishing glacial reserves, resulting in future water scarcity.

Global Warming

This is the sustained increase in Earth's average surface temperature, a trend driven primarily by elevated concentrations of heat-trapping atmospheric gases.

Climate Change

This is the long-term alteration of temperature and weather patterns in a region, a shift driven by both natural variability and anthropogenic forcing mechanisms.

Anthropogenic

This is the term used to describe environmental changes or processes that are directly caused by human activities rather than natural forces.

Greenhouse Gases (GHGs)

These are atmospheric components such as CO2, methane, and nitrous oxide, which absorb and re-emit infrared radiation, thereby contributing to the warming of the lower atmosphere.

Carbon Dioxide (CO2)

This is the primary greenhouse gas released through fossil fuel combustion and deforestation, whose increasing atmospheric concentration is the main driver of contemporary global warming.

Methane (CH4)

This is a potent greenhouse gas released from livestock digestion, rice cultivation, and landfill decomposition, which has a significantly higher warming potential than CO2 over short timeframes.

Nitrous Oxide (N2O)

This is a greenhouse gas emitted from agricultural fertilizer use and industrial processes, which has a warming potential nearly 300 times greater than carbon dioxide.

Water Vapour

This is the most abundant greenhouse gas in the atmosphere, whose concentration increases with warming temperatures, creating a positive feedback loop that amplifies climate change.

Feedback Loops (Negative)

This is a self-regulating cycle where an initial environmental change triggers responses that counteract the change, such as increased cloud cover reflecting more solar radiation.

Thermal Expansion

This is the physical phenomenon where seawater increases in volume as its temperature rises, contributing significantly to observed sea level rise.

Ice Sheet

This is a massive, continental-scale glacier covering over 50,000 square kilometres, such as those found in Greenland and Antarctica, whose melting poses a major threat to global sea levels.

Ice Core

This is a cylindrical sample drilled from ice sheets or glaciers, which contains trapped air bubbles and isotopes that provide a historical record of past atmospheric composition and climate.

Proxy Data

This is indirect evidence of past climate conditions, such as tree rings, sediment layers, and ice cores, which scientists use to reconstruct temperature and atmospheric patterns before instrumental records.

IPCC

This is the Intergovernmental Panel on Climate Change, a United Nations body that assesses scientific research on climate change and provides comprehensive reports to guide global policy decisions.

Paris Agreement

This is an international treaty adopted in 2015, where participating nations committed to limiting global temperature rise to well below 2°C above pre-industrial levels.

Carbon Footprint

This is the total amount of greenhouse gases emitted directly or indirectly by an individual, organization, or activity, typically measured in tonnes of CO2 equivalent.

Carbon Offset

This is a reduction in emissions elsewhere used to compensate for emissions produced in another location, often achieved through investments in reforestation or renewable energy projects.

Renewable Energy

This is energy derived from naturally replenishing sources such as solar, wind, hydroelectric, and geothermal power, which produce minimal greenhouse gas emissions during operation.

Solar Power

This is energy harnessed from sunlight using photovoltaic panels or thermal collectors, representing a zero-emission alternative to fossil fuel-based electricity generation.

Wind Power

This is energy generated by converting the kinetic energy of moving air into electricity using turbines, which produces no direct atmospheric emissions during operation.

Hydropower

This is energy produced from flowing water, typically through dams, which provides a renewable electricity source while also having potential ecological impacts on river systems.

Geothermal Energy

This is energy extracted from the Earth's internal heat, used for electricity generation and heating, which produces minimal emissions but is geographically limited to tectonically active regions.

Biofuels

These are fuels derived from organic matter such as corn, sugarcane, or vegetable oils, which are considered renewable but can have environmental trade-offs regarding land use and food production.

Nuclear Power

This is energy generated through nuclear fission reactions, which produces no greenhouse gas emissions during operation but presents challenges regarding radioactive waste disposal.

Adaptation (Climate)

This is the process of adjusting to actual or expected climate conditions, such as building flood defences or developing drought-resistant crops, aimed at reducing vulnerability to climate impacts.

Mitigation (Climate)

This is the process of reducing greenhouse gas emissions or enhancing carbon sinks, such as transitioning to renewable energy or reforesting cleared land, aimed at limiting the extent of climate change.

Carbon Capture and Storage (CCS)

This is a technology that captures CO2 emissions from industrial sources and stores them underground in geological formations, preventing their release into the atmosphere.

Climate Refugees

These are people forced to leave their homes due to climate-related impacts such as sea level rise, desertification, or extreme weather events, resulting in displacement and migration.

Desertification

This is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture, leading to reduced productivity and food insecurity.

Permafrost

This is permanently frozen ground found in Arctic regions, which contains vast stores of organic carbon that may be released as methane and CO2 as temperatures rise and the permafrost thaws.