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Environmental: explore STEM content (page 10 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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Note~216 words · 1 min

Linear vs Circular A linear economy extracts raw materials, manufactures products, and discards them as waste once used — a one-way flow. A circular economy instead designs products and systems to keep materials in use as long as possible,

Environmental

Environmental · L3 · Waste Management & the Circular Economy

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Environmental · L3 · Waste Management & the Circular Economy

Flowchart9 objects

Environmental

Environmental · L3 · Desert Water Deficit and the Adaptations It Drives

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Environmental · L3 · Desert Water Deficit and the Adaptations It Drives

Flashcards8 cards

What defines a wetland?1 / 8

A wetland is land that's saturated with water — permanently or for at least part of the year — long enough to support plants and soils adapted to those wet conditions, called hydrophytic (water-loving) vegetation.

Environmental

Environmental · L2 · Wetland Ecosystems

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Environmental · L2 · Wetland Ecosystems

Note~139 words · 1 min

What Does 'Endangered' Mean? An endangered animal is one with so few individuals left that the entire species is at risk of disappearing. If none are left anywhere, the species is extinct — gone forever. Why Do Animals Become Endangered? Ho

Environmental

Environmental · L1 · Endangered Animals & Conservation

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Environmental · L1 · Endangered Animals & Conservation

Collection4 items

01Environmental · L4 · Air Pollution Control Engineering

02Environmental · L4 · Air Pollution Control Engineering: Cleaning the Flue Gas Train

03Environmental · L4 · The Flue Gas Treatment Train

+1 more

Environmental

Environmental · L4 · Air Pollution Control Engineering

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Environmental · L4 · Air Pollution Control Engineering

Flowchart5 objects

Environmental

Environmental · L1 · Renewable & Clean Energy Quiz · flowchart

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Environmental · L1 · Renewable & Clean Energy Quiz · flowchart

Flashcards8 cards

Define LC50 and EC50 in toxicology, and how do they differ?1 / 8

LC50 (lethal concentration, 50%) is the concentration of a substance that causes death in 50% of a test population over a specified exposure duration. EC50 (effective concentration, 50%) is broader — the concentration producing any defined sub-lethal effect (e.g. reduced growth, reproductive impairment) in 50% of the population. LC50 is a special case of EC50 where the 'effect' is mortality.

Environmental

Environmental · L5 · Quantitative Ecotoxicology

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Environmental · L5 · Quantitative Ecotoxicology

Flowchart11 objects

Environmental

Environmental · L4 · The Remote Sensing to GIS Analysis Pipeline

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Environmental · L4 · The Remote Sensing to GIS Analysis Pipeline

Flowchart20 objects

Environmental

Environmental · L5 · Hydrological Model Development Pipeline

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Environmental · L5 · Hydrological Model Development Pipeline

Collection4 items

01Environmental · L3 · Air Quality Index & Pollutants

02Environmental · L3 · Air Quality Index & Pollutants

03Environmental · L3 · How an AQI Score Is Built

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Environmental

Environmental · L3 · Air Quality Index & Pollutants

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Environmental · L3 · Air Quality Index & Pollutants

Flowchart11 objects

Environmental

Environmental · L3 · Primary Succession: Bare Rock to Climax Forest

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Environmental · L3 · Primary Succession: Bare Rock to Climax Forest

Collection4 items

01Environmental · L1 · Ocean Life & Plastic Pollution

02Environmental · L1 · Ocean Life & Plastic Pollution

03Environmental · L1 · From Land Litter to Ocean Plastic

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Environmental

Environmental · L1 · Ocean Life & Plastic Pollution

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Environmental · L1 · Ocean Life & Plastic Pollution

Note~309 words · 2 min

The Central Problem: Autocorrelation Inflates False Confidence Standard significance tests (t-tests, OLS trend tests) assume independent observations. Environmental time series — temperature, streamflow, CO₂ anomalies — are routinely serial

Environmental

Environmental · L5 · Environmental Statistics: Trend Detection in Serially Correlated Data

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Environmental · L5 · Environmental Statistics: Trend Detection in Serially Correlated Data

Flashcards8 cards

What is a wetland?1 / 8

A wetland is land that is covered by shallow water for all or part of the year, like a marsh, swamp, or bog.

Environmental

Environmental · L1 · Wetlands & Swamps

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Environmental · L1 · Wetlands & Swamps

Flowchart8 objects

Environmental

Environmental · L4 · Conservation Biology & Population Viability · flowchart

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Environmental · L4 · Conservation Biology & Population Viability · flowchart

Quiz5 questions

What does 'cradle-to-grave' mean in a life-cycle assessment?

AOnly the manufacturing stage is assessedBThe assessment covers the full life span, from raw material extraction to final disposalCOnly the disposal stage is assessedDThe product is assessed only while in use

Environmental

Environmental · L3 · Life-Cycle Assessment (LCA)

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Environmental · L3 · Life-Cycle Assessment (LCA)

Quiz5 questions

What does a materials recovery facility (MRF) do?

ABurns all recyclables for energyBSorts mixed recyclables into clean, single-material streams for reprocessingCManufactures new plastic from crude oilDBuries recyclables in a landfill

Environmental

Environmental · L2 · Recycling Systems & Materials

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Environmental · L2 · Recycling Systems & Materials

Flowchart5 objects

Environmental

Environmental · L1 · Habitats & Food Chains Quiz · flowchart

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Environmental · L1 · Habitats & Food Chains Quiz · flowchart

Flowchart9 objects

Environmental

Environmental · L5 · Quantitative Ecotoxicology and Risk Assessment · flowchart

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Environmental · L5 · Quantitative Ecotoxicology and Risk Assessment · flowchart

Note~343 words · 2 min

Environmental Microbiology: The Biogeochemical Engines Every major biogeochemical cycle is, at its core, a chain of microbial metabolisms. Bacteria and Archaea catalyse nearly every redox transformation that moves nitrogen, carbon, and sulf

Environmental

Environmental · L4 · Environmental Microbiology: The Biogeochemical Engines

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Environmental · L4 · Environmental Microbiology: The Biogeochemical Engines

Note~150 words · 1 min

What Are Glaciers and Ice Caps? A glacier is a giant, slow-moving mass of ice that forms on land from packed-down snow. An ice cap is a thick dome of ice covering land, often near the North and South Poles. Together, glaciers and ice caps h

Environmental

Environmental · L1 · Glaciers & Ice Caps

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Environmental · L1 · Glaciers & Ice Caps

Quiz5 questions

Fertiliser washing off a farm field into a nearby stream is an example of what kind of pollution source?

APoint sourceBNonpoint sourceCNeither — fertiliser is not a pollutantDAtmospheric source

Environmental

Environmental · L2 · Water Pollution & Treatment

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Environmental · L2 · Water Pollution & Treatment

Note~141 words · 1 min

Coral: An Animal, Not a Rock Coral looks like colorful rock, but it is actually built by tiny animals called polyps. Each polyp makes a hard, stony skeleton, and over hundreds of years, millions of these skeletons stack together to form a c

Environmental

Environmental · L1 · Coral Reefs

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Environmental · L1 · Coral Reefs

Collection4 items

01Environmental · L1 · Forests & Why Trees Matter

02Environmental · L1 · Forests & Why Trees Matter

03Environmental · L1 · What Happens When a Forest Is Cut Down

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Environmental

Environmental · L1 · Forests & Why Trees Matter

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Environmental · L1 · Forests & Why Trees Matter

Flashcards9 cards

What is eutrophication?1 / 9

The process by which a body of water becomes excessively enriched with nutrients — mainly nitrogen and phosphorus — triggering excessive plant and algae growth that ultimately degrades water quality.

Environmental

Environmental · L3 · Water Quality & Eutrophication

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Environmental · L3 · Water Quality & Eutrophication

Flashcards8 cards

What is a General Circulation Model (GCM), and what components does it couple?1 / 8

A GCM is a numerical model that solves the physical equations governing fluid motion, radiation, and thermodynamics on a three-dimensional grid spanning the globe, projecting how the climate system evolves over time. Modern GCMs are usually 'coupled' — they simultaneously simulate the atmosphere, ocean, land surface, and sea ice/ice sheets, and the exchanges of heat, moisture, and momentum between them, rather than modelling the atmosphere in isolation.

Environmental