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Environmental: explore STEM content (page 19 of 27) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Environmental Environmental groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Environmental

Geology, climate and the environment on openstem — flashcards, notes, quizzes, plots and sketches shared by the community. Study free, or clone anything into your library.

Content Groups1

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Quiz5 questions

What shape does an exponentially growing population's curve take?

AS-shaped (sigmoid)BJ-shaped, accelerating without limitCA flat lineDA downward slope

Environmental

Environmental · L3 · Population Ecology & Carrying Capacity

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Environmental · L3 · Population Ecology & Carrying Capacity

Flowchart11 objects

Environmental

Environmental · L5 · Groundwater Flow and Contaminant Transport Modeling · flowchart

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Environmental · L5 · Groundwater Flow and Contaminant Transport Modeling · flowchart

Flowchart11 objects

Environmental

Environmental · L4 · Environmental Toxicology: Dose, Response, and Trophic Accumulation · flowchart

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Environmental · L4 · Environmental Toxicology: Dose, Response, and Trophic Accumulation · flowchart

Plot1 plot · 1 param

Environmental

Environmental · L5 · Radioactive Decay Curve: N(t) = N₀ exp(−λ t)

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Environmental · L5 · Radioactive Decay Curve: N(t) = N₀ exp(−λ t)

Quiz5 questions

Without VOCs present, why doesn't the basic NO2 photolysis cycle cause ozone to build up indefinitely?

ANO2 does not absorb sunlightBThe ozone produced reacts back with NO, regenerating NO2 in a closed null cycleCOzone is destroyed by rain immediatelyDNO2 only forms at night

Environmental

Environmental · L4 · Atmospheric Chemistry — 5 Q

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Environmental · L4 · Atmospheric Chemistry — 5 Q

Note~127 words · 1 min

Why Does the Ground Shake? Earth's rocky outer layer is broken into giant pieces called tectonic plates. They move very slowly — but at their edges, they can push, pull, or grind against each other. Pressure slowly builds up where two plate

Environmental

Environmental · L1 · Earthquakes: Earth's Shaking Ground

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Environmental · L1 · Earthquakes: Earth's Shaking Ground

Flashcards4 cards

Describe the carbonate chemistry of ocean acidification and its impact on the calcium carbonate saturation state.1 / 4

Anthropogenic CO₂ dissolves in seawater following the equilibria:

Environmental

Environmental · L5 · Ocean Acidification, Radiative Forcing, and Plate Geodesy

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Environmental · L5 · Ocean Acidification, Radiative Forcing, and Plate Geodesy

Flashcards8 cards

What is NEPA (1970), and what must it require of federal agencies before a major action?1 / 8

The National Environmental Policy Act requires U.S. federal agencies to assess the environmental effects of proposed 'major federal actions significantly affecting the quality of the human environment' BEFORE undertaking them. It's a procedural law — it doesn't dictate a specific outcome, but forces agencies to document and disclose environmental consequences and consider alternatives before deciding.

Environmental

Environmental · L4 · Environmental Law & Regulation

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Environmental · L4 · Environmental Law & Regulation

Note~209 words · 1 min

Why Nitrogen Needs a Cycle Nitrogen gas (N₂) makes up about 78% of the atmosphere, but its two nitrogen atoms are locked together by an unusually strong triple bond that most organisms cannot break. The nitrogen cycle is the set of biologic

Environmental

Environmental · L3 · The Nitrogen Cycle

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Environmental · L3 · The Nitrogen Cycle

Note~273 words · 1 min

The Linear Feedback Framework Climate sensitivity is quantified by linearizing the global top-of-atmosphere energy budget around an equilibrium state: ΔN is radiative imbalance, ΔF the applied forcing (e.g. from CO₂), ΔT the resulting globa

Environmental

Environmental · L5 · Quantifying Earth System Feedbacks

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Environmental · L5 · Quantifying Earth System Feedbacks

Note~336 words · 2 min

Darcy's Law and the Flow Equation Groundwater flow modeling starts from Darcy's law — flow proportional to the hydraulic head gradient, scaled by hydraulic conductivity K: Extended to a full aquifer and combined with mass conservation, this

Environmental

Environmental · L5 · Groundwater Flow and Contaminant Transport Modeling

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Environmental · L5 · Groundwater Flow and Contaminant Transport Modeling

Flowchart5 objects

Environmental

Environmental · L2 · Groundwater & Aquifers · flowchart

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Environmental · L2 · Groundwater & Aquifers · flowchart

Note~230 words · 1 min

Two Models of Growth Populations don't grow forever — but the two standard models ecologists use to describe growth differ sharply in whether they account for that limit. Exponential Growth When resources are effectively unlimited, a popula

Environmental

Environmental · L3 · Population Ecology & Carrying Capacity

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Environmental · L3 · Population Ecology & Carrying Capacity

Note~354 words · 2 min

Reservoirs, Fluxes, and the Mass-Balance Equation Quantitative biogeochemistry treats a cycle — carbon, nitrogen, phosphorus, sulfur — as a set of discrete reservoirs (boxes), each holding mass M_i, linked by fluxes F_ij that move material

Environmental

Environmental · L5 · Box-Model Formulation of Biogeochemical Cycles

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Environmental · L5 · Box-Model Formulation of Biogeochemical Cycles

Flowchart13 objects

Environmental

Environmental · L3 · Eutrophication: Runoff to Dead Zone

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Environmental · L3 · Eutrophication: Runoff to Dead Zone

Flowchart13 objects

Environmental

Environmental · L2 · Five Drivers of Species Decline

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Environmental · L2 · Five Drivers of Species Decline

Flashcards9 cards

State the watershed water balance equation and define each term.1 / 9

P = ET + Q + ΔS, where P is precipitation input, ET is evapotranspiration (evaporation + plant transpiration), Q is runoff (streamflow leaving the watershed), and ΔS is the change in water storage (soil moisture, groundwater, surface water) over the period considered. Over a long enough averaging period, ΔS trends toward zero and P ≈ ET + Q.

Environmental

Environmental · L4 · Quantitative Hydrology

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Environmental · L4 · Quantitative Hydrology

Collection4 items

01Environmental · L2 · Energy Efficiency in Buildings

02Environmental · L2 · Energy Efficiency in Buildings

03Environmental · L2 · Why Insulation Cuts Energy Use

+1 more

Environmental

Environmental · L2 · Energy Efficiency in Buildings

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Environmental · L2 · Energy Efficiency in Buildings

Flashcards9 cards

What two criteria does a region need to meet to qualify as a 'biodiversity hotspot' under Conservation International's definition?1 / 9

It must contain at least 1,500 endemic vascular plant species — found nowhere else on Earth — AND have already lost at least 70% of its original natural habitat.

Environmental

Environmental · L3 · Biodiversity Hotspots & Extinction Rates

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Environmental · L3 · Biodiversity Hotspots & Extinction Rates

Flowchart13 objects

Environmental

Environmental · L1 · Three Ways to Make Clean Electricity

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Environmental · L1 · Three Ways to Make Clean Electricity

Collection4 items

01Environmental · L1 · Wildlife Rescue & Rehabilitation

02Environmental · L1 · Wildlife Rescue & Rehabilitation

03Environmental · L1 · The Wildlife Rescue Process

+1 more

Environmental

Environmental · L1 · Wildlife Rescue & Rehabilitation

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Environmental · L1 · Wildlife Rescue & Rehabilitation

Flowchart11 objects

Environmental

Environmental · L3 · From Satellite Reflectance to a Deforestation Alert

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Environmental · L3 · From Satellite Reflectance to a Deforestation Alert

Flowchart7 objects

Environmental

Environmental · L1 · A Simple Food Chain

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Environmental · L1 · A Simple Food Chain

Flashcards8 cards

What does it mean for a species to be 'invasive'?1 / 8

An invasive species is a non-native organism introduced to a new area — usually by human activity — that spreads rapidly and causes ecological or economic harm there. Not every introduced species becomes invasive; the label applies specifically to ones that cause real damage.

Environmental

Environmental · L2 · Invasive Species

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Environmental · L2 · Invasive Species

Flowchart14 objects

Environmental

Environmental · L5 · Box-Model Construction Workflow

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Environmental · L5 · Box-Model Construction Workflow

Collection4 items

01Environmental · L3 · Trophic Levels & Energy Pyramids

02Environmental · L3 · Trophic Levels & Energy Pyramids

03Environmental · L3 · Energy Pyramid: The 10% Rule

+1 more

Environmental

Environmental · L3 · Trophic Levels & Energy Pyramids

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Environmental · L3 · Trophic Levels & Energy Pyramids

Flowchart17 objects

Environmental

Environmental · L5 · Geostrophic and Ekman Balance

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Environmental · L5 · Geostrophic and Ekman Balance

Collection4 items

01Environmental · L1 · Air Pollution & Clean Air

02Environmental · L1 · Air Pollution & Clean Air

03Environmental · L1 · Where Air Pollution Comes From

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Environmental

Environmental · L1 · Air Pollution & Clean Air

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Environmental · L1 · Air Pollution & Clean Air

Flashcards8 cards

What is a carbon footprint?1 / 8

A carbon footprint is the total amount of greenhouse gases — expressed as an equivalent amount of carbon dioxide (CO₂e) — that a person, household, product, or activity is responsible for releasing, directly and indirectly.

Environmental

Environmental · L2 · Carbon Footprint

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Environmental · L2 · Carbon Footprint

Collection4 items

01Environmental · L4 · Quantitative Hydrology

02Environmental · L4 · Quantitative Hydrology: Tracking Where the Water Goes

03Environmental · L4 · Where a Raindrop Goes: Watershed Water Partitioning

+1 more

Environmental

Environmental · L4 · Quantitative Hydrology

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Environmental · L4 · Quantitative Hydrology

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