on September 23, 2022
What is the process which causes magma to form?
GeologyAsked by: Nicole Young Magma is created at mid-ocean ridges via decompression melting. Strong convection currents cause the solid asthenosphere to slowly flow beneath the lithosphere. The upper part of the lithosphere (crust) is a poor heat conductor, so the temperature remains about the same throughout the underlying mantle material. What causes magma to form?
on September 23, 2022
Why are the Appalachian mountains so important?
GeologyAsked by: Jesse Carmody The mountains have played an important role in the history and economic development of the United States. They formed a barrier that held the early settlers near the Atlantic coast until the colonies could develop the unity and strength to fight for independence and form a nation. What makes Appalachia unique?
on September 23, 2022
What causes mass wasting?
GeologyAsked by: Joseph Fulce Mass-wasting events are triggered by changes that oversteepen slope angles and weaken slope stability, such as rapid snow melt, intense rainfall, earthquake shaking, volcanic eruption, storm waves, stream erosion, and human activities. Excessive precipitation is the most common trigger. What triggers mass wasting? Mass-wasting events often have a trigger: something changes
on September 23, 2022
What is the interaction between the atmosphere and hydrosphere?
GeologyAsked by: Malaysy Bottenhagen Plants (atmosphere) draw water (hydrosphere) and nutrients from the soil and release water vapor into the atmosphere. Plants (hydrosphere) draw water (biosphere) and nutrients from the soil and release water vapor into the atmosphere. What is the interaction between the atmosphere and biosphere? Biosphere-Atmosphere Interactions focuses on the sources and sinks
on September 22, 2022
At what depth does the earth heat up?
GeologyAsked by: Ryan Mence The geothermal gradient (i.e. the increase in temperature with an increase in depth in the Earth) is not equal all over the world. On average, the temperature increases 2°- 3° C per 100 m in depth, however the increase can range from 1° to 5° C/100 m. How far into the
on September 22, 2022
What’s the difference between sinkholes and subsidence?
GeologyAsked by: Adam Jaye In simplest terms, land subsidence is a lowering of the ground while sinkholes involve a collapsing of the land and usually creating a giant hole. What is the difference in collapse versus subsidence sinkholes? Karst subsidence is sinking of land that occurs as a result of gradual dissolution of soluble surface
on September 22, 2022
Where are the active volcanoes in the Philippines located?
GeologyAsked by: Kara Gilbert Most of the Philippines’ active volcanoes are found on the island of Luzon, which is the largest and most prominent island in the Philippines. Aside from MayonMayonMayon is the main landmark and highest point of the province of Albay and the whole Bicol Region in the Philippines, rising 2,463 meters (8,081
on September 22, 2022
Why is Earth’s surface changing?
GeologyAsked by: James Owens Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer timescale, the movement of earth’s plates slowly reconfigures oceans and continents. Each one of these processes plays a role in the Arctic and
on September 22, 2022
What are the 4 landforms created from lava and ash?
GeologyAsked by: Heidi Johnson Landforms that form from lava and ash include shield volcanoes, cinder cone volcanoes, composite volcanoes, lava plateaus, and calderas. What types of landforms are created by lava? Landforms created by lava include volcanoes, domes, and plateaus. New land can be created by volcanic eruptions. Landforms created by magma include volcanic necks
on September 22, 2022
What is the chemical property of mineral?
GeologyAsked by: Kelly Tansky What are chemical property of minerals? Properties that help geologists identify a mineral in a rock are: color, hardness, luster, crystal forms, density, and cleavage. Crystal form, cleavage, and hardness are determined primarily by the crystal structure at the atomic level. Color and density are determined primarily by the chemical composition.