Search results
Results from the WOW.Com Content Network
Rammed earth is more often considered for use in walls, although it can also be used for floors. Rammed earth and caliche block can be used for structural walls, and offer great potential as low-cost material alternatives with low embodied energy. In addition, such materials are fireproof. Caliche block and rammed earth can be produced on-site.
A pH of 9.5 has 10 −9.5 moles hydronium ions per litre of solution (and also 10 −2.5 moles per litre OH −). A pH of 3.5 has one million times more hydronium ions per litre than a solution with pH of 9.5 (9.5 − 3.5 = 6 or 10 6) and is more acidic. [115] The effect of pH on a soil is to remove from the soil or to make available certain ions.
Surface of Earth, showing higher elevations in red. Geomorphology (from Ancient Greek γῆ (gê) 'earth' μορφή (morphḗ) 'form' and λόγος 'study') [2] is the scientific study of the origin and evolution of topographic and bathymetric features generated by physical, chemical or biological processes operating at or near Earth's surface.
Earth's regolith [8] [9] [10] includes the following subdivisions and components: soil or pedolith; alluvium and other transported cover, including that transported by aeolian, glacial, marine, and gravity flow processes. "saprolith'", generally divided into the upper saprolite: completely oxidised bedrock
Soil formation is influenced by at least five classic factors that are intertwined in the evolution of a soil. They are: parent material, climate, topography (relief), organisms, and time. [9] When reordered to climate, organisms, relief, parent material, and time, they form the acronym CLORPT. [10]
Earth's crust and mantle, Mohorovičić discontinuity between bottom of crust and solid uppermost mantle. Earth's mantle extends to a depth of 2,890 km (1,800 mi), making it the planet's thickest layer. [20] [This is 45% of the 6,371 km (3,959 mi) radius, and 83.7% of the volume - 0.6% of the volume is the crust].
The chemical composition of the Earth and other bodies is determined by two opposing processes: differentiation and mixing. In the Earth's mantle , differentiation occurs at mid-ocean ridges through partial melting , with more refractory materials remaining at the base of the lithosphere while the remainder rises to form basalt .
Earth structure – Building or other structure made largely from soil; Gabion – Cage full of rock; Keyline design – Landscaping to optimize water usage; Land restoration – Process of restoring land to a different state; Grading (earthworks) – In civil engineering, creating a profile; Spoil tip – Pile built of accumulated spoil