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Environmental: explore STEM content (page 8 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~376 words · 2 min

Why Farmers Fight Erosion Topsoil is the thin, nutrient-rich layer that almost all farming depends on — and it forms extremely slowly, often taking centuries to build up a single centimeter. Wind and rain can strip that same layer away in a

Environmental

Environmental · L2 · Soil Conservation & Erosion Control

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Environmental · L2 · Soil Conservation & Erosion Control

Flowchart16 objects

Environmental

Environmental · L5 · Hydrological Modeling: From Richards' Equation to Watershed Models · flowchart

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Environmental · L5 · Hydrological Modeling: From Richards' Equation to Watershed Models · flowchart

Collection4 items

01Environmental · L4 · Solid Waste Management Engineering

02Environmental · L4 · Solid Waste Management Engineering

03Environmental · L4 · MSW Pathway: Collection to Final Disposition

+1 more

Environmental

Environmental · L4 · Solid Waste Management Engineering

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Environmental · L4 · Solid Waste Management Engineering

Collection7 items

01Environmental · L2 · The Rock Cycle and Earth's Layers

02Environmental · L2 · The Carbon Cycle, Biomes, and Watersheds

03Environmental · L2 · Weather vs Climate

+4 more

Environmental

Environmental · L2 · Rock Cycle & Earth Systems

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Environmental · L2 · Rock Cycle & Earth Systems

Note~293 words · 1 min

Restoration Ecology: Setting Targets and Choosing Interventions Restoration ecology asks two connected questions for any degraded site: what should 'restored' actually mean here, and how much direct intervention does getting there actually

Environmental

Environmental · L4 · Restoration Ecology: Setting Targets and Choosing Interventions

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Environmental · L4 · Restoration Ecology: Setting Targets and Choosing Interventions

Quiz2 questions

Where does rain come from?

AFrom rivers flying upwardBFrom water drops in cloudsCFrom the ocean directlyDFrom the ground

Environmental

Environmental · L1 · Weather and Rocks

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Environmental · L1 · Weather and Rocks

Flowchart5 objects

Environmental

Environmental · L4 · Air Pollution Control Engineering · flowchart

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Environmental · L4 · Air Pollution Control Engineering · flowchart

Flowchart13 objects

Environmental

Environmental · L5 · From Emissions Pathway to Social Cost of Carbon

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Environmental · L5 · From Emissions Pathway to Social Cost of Carbon

Flashcards9 cards

What is ecological succession?1 / 9

The gradual, predictable process by which the species composition of an ecosystem changes over time, typically progressing toward a more stable, complex community.

Environmental

Environmental · L3 · Ecological Succession

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Environmental · L3 · Ecological Succession

Quiz5 questions

A solar farm rated at 50 MW produces an average of 11 MW over a year. What is its capacity factor?

A11%B22%C50%D61%

Environmental

Environmental · L3 · Renewable Energy Technologies

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Environmental · L3 · Renewable Energy Technologies

Flashcards8 cards

Write the general advection-diffusion equation for a dissolved/dispersed contaminant concentration C in a moving fluid.1 / 8

The concentration's rate of change plus advective transport by the mean velocity field u equals turbulent/molecular diffusion (Fickian, with diffusivity D) plus any source term S. Environmental fluid mechanics applies this same governing equation to pollutant plumes in air, dye in a river, or a contaminant in groundwater — only the geometry, velocity field, and diffusivity differ.

Environmental

Environmental · L5 · Environmental Fluid Mechanics: Turbulent Dispersion & Plume Modeling

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Environmental · L5 · Environmental Fluid Mechanics: Turbulent Dispersion & Plume Modeling

Collection3 items

01Environmental · L4 · Plate Tectonics & Earth's Interior

02Environmental · L4 · Minerals, Rocks & the Rock Cycle

03Environmental · L4 · Tectonic plate boundary types and their geological products

Environmental

Environmental · L4 · Plate Tectonics & Geology

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Environmental · L4 · Plate Tectonics & Geology

Flashcards8 cards

Why is fitting an ordinary least-squares (OLS) trend line directly to a climate time series statistically risky?1 / 8

OLS standard errors assume independent, identically distributed residuals. Climate time series are almost always serially (auto-)correlated — today's anomaly is correlated with yesterday's/last year's — which violates that assumption. Ignoring autocorrelation makes the OLS trend's standard error too small, so a trend can appear 'statistically significant' when it is really within the range of natural short-term persistence.

Environmental

Environmental · L5 · Environmental Statistics: Trend Detection

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Environmental · L5 · Environmental Statistics: Trend Detection

Note~255 words · 1 min

Point Source vs Nonpoint Source Pollution Water pollution is usually grouped by where it comes from. Point source pollution has one clear, identifiable origin — like a discharge pipe. Nonpoint source pollution is spread across a whole lands

Environmental

Environmental · L2 · Water Pollution & Treatment

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Environmental · L2 · Water Pollution & Treatment

Flowchart12 objects

Environmental

Environmental · L2 · The Global Ocean Circulation Loop

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Environmental · L2 · The Global Ocean Circulation Loop

Quiz5 questions

Which of these is the definition of biodiversity?

AThe total number of trees in a forestBThe variety of life — genetic, species, and ecosystem diversity — in a placeCThe average temperature of a regionDThe number of national parks in a country

Environmental

Environmental · L2 · Biodiversity & Species Loss

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Environmental · L2 · Biodiversity & Species Loss

Flashcards9 cards

What is a GCM (General Circulation Model / Global Climate Model), conceptually?1 / 9

A computer simulation that divides the atmosphere and ocean into a 3D grid of cells and, for each cell, solves physical equations governing fluid motion, heat transfer, and radiation, stepping forward in time to project how the climate system evolves.

Environmental

Environmental · L3 · Climate Models & Scenario Projections

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Environmental · L3 · Climate Models & Scenario Projections

Note~171 words · 1 min

What Happens to Rubbish? When you throw something away, it doesn't just disappear. Most rubbish is collected and taken to a landfill — a huge area of land where it is buried. How Long Does Rubbish Last? Composting: A Better Path for Food Sc

Environmental

Environmental · L1 · Litter, Landfills & Composting

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Environmental · L1 · Litter, Landfills & Composting

Flowchart16 objects

Environmental

Environmental · L2 · How the Urban Heat Island Effect Builds Up

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Environmental · L2 · How the Urban Heat Island Effect Builds Up

Flowchart10 objects

Environmental

Environmental · L1 · Single-Use vs Reusable, Over Time

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Environmental · L1 · Single-Use vs Reusable, Over Time

Quiz5 questions

What actually defines a desert?

AVery hot temperaturesBVery little rain or snowCLots of sandDNo animals living there

Environmental

Environmental · L1 · Deserts Quiz

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Environmental · L1 · Deserts Quiz

Collection4 items

01Environmental · L2 · Recycling Systems & Materials

02Environmental · L2 · Recycling Systems & Materials

03Environmental · L2 · Sorting Materials at a Recovery Facility

+1 more

Environmental

Environmental · L2 · Recycling Systems & Materials

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Environmental · L2 · Recycling Systems & Materials

Note~226 words · 1 min

A Cycle With No Sky in It Carbon and nitrogen both spend part of their cycle as atmospheric gases (CO₂, N₂), which lets them move around the planet quickly. Phosphorus has no biologically significant gas phase at all — it moves entirely thr

Environmental

Environmental · L3 · The Phosphorus Cycle

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Environmental · L3 · The Phosphorus Cycle

Flashcards8 cards

What is recycling?1 / 8

Recycling means turning old materials — like paper, glass, or plastic — into new products instead of throwing them away.

Environmental

Environmental · L1 · Recycling & the Three R's

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Environmental · L1 · Recycling & the Three R's

Flashcards9 cards

What is bioaccumulation?1 / 9

The build-up of a substance — often a toxin like mercury or a pesticide like DDT — in an individual organism's tissue, occurring when the organism absorbs or ingests the substance faster than its body can metabolise or excrete it.

Environmental

Environmental · L3 · Bioaccumulation & Biomagnification

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Environmental · L3 · Bioaccumulation & Biomagnification

Quiz5 questions

What does a LOWER LD50 value indicate about a substance?

AThe substance is less toxicBThe substance is more toxicCThe substance has no lethal doseDLD50 does not relate to toxicity

Environmental

Environmental · L4 · Environmental Toxicology — 5 Q

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Environmental · L4 · Environmental Toxicology — 5 Q

Collection4 items

01Environmental · L2 · Carbon Footprint

02Environmental · L2 · Carbon Footprint

03Environmental · L2 · What Adds Up to a Carbon Footprint

+1 more

Environmental

Environmental · L2 · Carbon Footprint

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Environmental · L2 · Carbon Footprint

Note~476 words · 2 min

Three Sources of Climate Projection Uncertainty Climate projections carry uncertainty from three distinct sources, each behaving differently across the projection horizon. Because internal variability dominates near-term uncertainty while s

Environmental