How did the compositional layers of the Earth develop?
GeologyThe major layers of the Earth, starting from its center, are the inner core, the outer core, the mantle, and the crust. These layers formed as the building blocks of Earth, known as planetesimals, collided and collapsed under their own gravity around 4.5 billion years ago. How did the layers of the Earth develop? Basically
What is a landscape region?
GeologyWhat is a landscape region? A region on earth’s surface in which physical features such. as hills, valleys, and streams are related by common origin. What is an example of a landscape region? Mountains, plateaus and plains identify landscape regions. What are the 3 landscape regions? Most landscape regions can be classified as plains, plateaus,
Which is the point vertically above the focus on surface of the earth?
GeologyThe epicenter is the point on the earth’s surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins. What is the point vertically above the force called? The epicenter of an earthquake is the point on the earth’s surface vertically above the focus. What is called the point on
How do we know that the outer core is liquid?
GeologyBy tracking seismic waves, scientists have learned what makes up the planet’s interior. P-waves slow down at the mantle core boundary, so we know the outer core is less rigid than the mantle. S-waves disappear at the mantle core boundary, so the outer core is liquid. What keeps the inner core be in a solid
What is the origin of most hydrothermal solutions?
GeologyThe sources of the water making up hydrothermal solutions are varied, and may include (Figure H7): (1) water that was recently involved in atmospheric circulation and which originates as precipitation at the Earth’s surface (meteoric water); (2) seawater; (3) interstitial water that is buried along with the enclosing … How is hydrothermal solution formed? hydrothermal
When was Mount St Helens found?
GeologyHelens on 19 May 1792, while surveying the northern Pacific Ocean coast. Vancouver named the mountain for British diplomat Alleyne Fitzherbert, 1st Baron St Helens on 20 October 1792, as it came into view when the Discovery passed into the mouth of the Columbia River. When was Mount Saint Helens discovered? Helens ‘Louwala-Clough,’ or ‘smoking
What are the characteristics of continental and oceanic crust?
GeologyIt is the solid rock layer upon which we live. It is either continental or oceanic. Continental crust is typically 30-50 km thick, whilst oceanic crust is only 5-10 km thick. Oceanic crust is denser, can be subducted and is constantly being destroyed and replaced at plate boundaries. What is a characteristic of oceanic crust?
Which plate collisions would most likely result in a subduction zone?
GeologyWhich plate collisions will produce subduction? Subduction occurs when two plates collide at a convergent boundary, and one plate is driven beneath the other, back into the Earth’s interior. What two types of collisions cause a subduction zone? When an oceanic and a continental plate collide, eventually the oceanic plate is subducted under the continental
Are repaired sinkhole homes safe?
GeologyIn general, if a repair has been certified by a licensed engineer and completed to the satisfaction of the homeowner’s insurance company, it is likely safe. However, since these are natural systems, there can be no guarantees that a repaired sinkhole will not cause future problems. Has anyone been recovered from a sinkhole? 28, 2013,
Why are organisms that are buried rapidly?
Geology3. Why are organisms that are buried rapidly more likely to fossilize than those that are buried slowly or not at all? Rapid burial protects an organism from biotic factors such as scavengers and decomposers, and from abiotic factors such as sun and wind, allowing the fossilization process to begin. Why is rapid burial? Why