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sediment

This collection contains a selection of content from NG Education about sediment. Use search to find more.

After a heavy rain, brown silt is washed into Anahola Bay, Kauai, in the U.S. state of Hawai'i. The area of the Pacific Ocean around Anahola Bay is home to coral reefs, which can be suffocated by excess silt. Silt is a solid, dust-like sediment that water, ice, and wind transport and deposit.

Photograph by Chris Johns

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A Desert Created by Water
Article
EDUCATION

A Desert Created by Water

Large animals like elephants, lions, and giraffes live in Namibia's deserts. How do these animals survive there? The secret is the desert's geography.

  • Best for: Grades 4-12 (ages 9-18)
  • Concepts: animals, atlantic ocean, currents, deserts, destination wild, erosion, landscape, namib desert, namibia, physical geography, rivers, sand, sand dunes, sediment
delta
Article
EDUCATION

delta

Deltas form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river.

  • Best for: Grades 5+ (ages 10+)
  • Concepts: deltas, mouths, nile river, rivers, sediment, wetlands
Sediment Core
Photo
EDUCATION

Sediment Core

Photo of a kneeling woman with a sediment core.

  • Concepts: christina symons, geology, ocean, sediment cores
alluvial fan
Article
EDUCATION

alluvial fan

An alluvial fan is a triangle-shaped deposit of gravel, sand, and smaller materials called alluvium.

  • Best for: Grades 4+ (ages 9+)
  • Concepts: alluvial fans, bajadas, colluvial fans, erosion, landscape, sediment, soil, streams
Mississippi Delta Formations
Photo
EDUCATION

Mississippi Delta Formations

Map of historical and present deltaic formations at the mouth of the Mississippi River

  • Best for: Grades 2+ (ages 7+)
  • Concepts: deltas, geomorphology, hydrology, louisiana, mississippi river, rivers, sediment
Oil's Impact on Black Mangrove Trees
Activity
EDUCATION

Oil's Impact on Black Mangrove Trees

Students learn about the basic ecology of mangrove ecosystems. They build a model to understand how a black mangrove breathes in an anoxic environment. Then they simulate an oil spill in their mangrove model to investigate how the black mangrove tree is affected by oil.

  • Best for: Grades 6-8 (ages 11-14)
  • Concepts: deepwater horizon, ecosystems, gulf of mexico, mangroves, ocean, oil spills
Minas Basin
Article
EDUCATION

Minas Basin

The incoming tide of the Minas Basin rushes in on bay mud.

  • Best for: Grades 5+ (ages 10+)
  • Concepts: basins, bay mud, bays, estuaries, geology, glaciers, minas basin, physical geography, silt, tides
Paleogeography of Lake Turkana
Article
EDUCATION

Paleogeography of Lake Turkana

Lake Turkana in Kenya has only been around for the past 200,000 years, but the expanding and receding shores of the lake have provided food and water to organisms for millions of years. Today, scientists study the stratigraphy of the Turkana basin to better understand the age of fossils discovered t...

  • Best for: Grades 5+ (ages 10+)
  • Concepts: africa, climate, flood plains, fossils, geology, kenya, lakes, lake turkana, maps, paleontology, rivers, sedimentology, stratigraphy, volcanoes
sediment
Article
EDUCATION

sediment

Encyclopedic entry. Sediment is solid material that is moved and deposited in a new location. Sediment can consist of rocks and minerals, as well as the remains of plants and animals.

  • Best for: Grades 5+ (ages 10+)
  • Concepts: agriculture, debris, dirt, earth, erosion, fertility, glaciers, precipitation, rivers, rocks, sediment, silt, soil, weathering
silt
Article
EDUCATION

silt

Encyclopedic entry. Silt is a solid, dust-like sediment that water, ice, and wind transport and deposit. Silt is made up of rock and mineral particles that are larger than clay but smaller than sand.

  • Best for: Grades 6+ (ages 11+)
  • Concepts: agriculture, alluvium, ecosystems, erosion, fertility, freshwater, loess, mud, nutrients, particles, runoff, sediment, silt, soil
moraine
Article
EDUCATION

moraine

Encyclopedic entry. A moraine is material left behind by a moving glacier. This material is usually soil and rock.

  • Best for: Grades 5+ (ages 10+)
  • Concepts: debris, glaciers, ice, landscape, moraine, sediment
basin
Article
EDUCATION

basin

A basin is a depression, or dip, in the Earth’s surface

  • Best for: Grades 6+ (ages 11+)
  • Concepts: basins, endorheic basins, geography, geology, lakes, landscape, ocean, rivers, sediment, watersheds
erosion
Article
EDUCATION

erosion

Erosion is the act in which earth is worn away, often by water, wind, or ice

  • Best for: Grades 6+ (ages 11+)
  • Concepts: alluvium, erosion, sediment, water, weathering, wind
coastal plain
Article
EDUCATION

coastal plain

A coastal plain is a flat, low-lying piece of land next to the ocean

  • Best for: Grades 5+ (ages 10+)
  • Concepts: beaches, coastal plains, coasts, geology, ocean, plains, sediment