on March 31, 2022
How useful is the volcanic explosivity index?
GeologyIt is very valuable because it can be used for both recent eruptions that scientists have witnessed and historic eruptions that happened thousands to millions of years ago. The primary eruption characteristic used to determine the volcanic explosivity index is the volume of pyroclastic material ejected by the volcano. What is the Volcanic Explosivity Index
on March 31, 2022
What does a longer time interval mean about the locations distance to the epicenter?
GeologyHow does the ps time interval change with distance from the epicenter? With increasing distance from the earthquake, the time difference between the arrival of the P waves and the arrival of the S waves increases. Put more simply, the higher the time between the S and P waves (the S-P interval), the farther the
on March 31, 2022
What is the name for plants that survive a major disturbance?
Geologywhat is the name for plants that survive a major disturbance? they are called survivors, and they served as important sources of seed to establishing a future forest inside the blast zone. What is the name for plants that survive a major disturbance What was their role in regenerating the disturbed area *? Terms in
on March 31, 2022
Where is most of Earth’s new crust found?
GeologyOceanic crust is constantly formed at mid-ocean ridges, where tectonic plates are tearing apart from each other. As magma that wells up from these rifts in Earth’s surface cools, it becomes young oceanic crust. The age and density of oceanic crust increases with distance from mid-ocean ridges. Where does most of the Earth’s crust form?
on March 31, 2022
How many types of systems are studied in earth science?
GeologyThe five systems of Earth (geosphere, biosphere, cryosphere, hydrosphere, and atmosphere) interact to produce the environments we are familiar with. What are the 4 systems of Earth science? The earth system is itself an integrated system, but it can be subdivided into four main components, sub-systems or spheres: the geosphere, atmosphere, hydrosphere and biosphere. What
on March 31, 2022
What are the two layers of the mantle?
GeologyThe mantle has two main parts, the upper mantle and the lower mantle. The upper mantle is attached to the layer above it called the crust. Together the crust and the upper mantle form a fixed shell called the lithosphere, which is broken into sections called tectonic plates. What are the 2 layers of the
on March 31, 2022
What forms the continental rise?
GeologyContinental rises form as a result of three sedimentary processes: mass wasting, the deposition from contour currents, and the vertical settling of clastic and biogenic particles. What are continental rises mostly made of? A continental rise consists mainly of silts, mud, and sand, deposited by turbidity flows, and can extend for several hundreds of miles
on March 31, 2022
Does Basalt have luster?
GeologyIs basalt shiny or dull? Basalt consists of a fine and even-grain. The dense rock has no crystals or minerals discernible to the naked eye. When freshly broken, basalt has a dull surface. What is characteristics of basalt rocks? basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in colour, and comparatively
on March 31, 2022
What is another word for ice age?
Geologyglacial epochIce-age synonyms In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for ice-age, like: glacial epoch, glacial period, glaciation, cretaceous, interglacial, 0-05x, 50-60mm and 5cm-2-inch. What is ice another name for? Crystal methamphetamine (‘ice’, ice drug) is a stimulant drug, which means it speeds up the messages travelling between
on March 31, 2022
Which came first Rodinia and Pangea?
GeologyPangaea broke up about 250 million years ago and Rodinia about 760 million years ago. What came before Pangea? Between roughly 750 million and 550 million years ago these ocean basins were destroyed, and all the Precambrian nuclei of Africa, Australia, Antarctica, South America and India amalgamated into the supercontinent of Gondwana. What came after