What doctrine of earth science implies that major features on the surface of Earth are created by sudden short lived violent events?
Along with Charles Lyell, James Hutton developed the concept of uniformitarianism. He believed Earth’s landscapes like mountains and oceans formed over long period of time through gradual processes. study of living things. theory that sudden, violent events have formed the shape of the Earth.
Who is credited with formulating the doctrine of Uniformitarianism?
Quiz 7 Geology
| Question | Answer |
|---|---|
| Who is credited with formulating the doctrine of uniformitarianism | Hutton |
| Which of the following geologic observations would not bear directly on working out the sequence of geologic events in an area | the feldspar and quartz contents of a granite |
When comparing the thickness of the atmosphere to the thickness of the geosphere?
When comparing the thickness of the atmosphere to the thickness of the geosphere, the atmosphere is much thinner than the geosphere, which approximates a radius of 6400 kilometers.
What hypothesis paved the way for the present theory of plate tectonics?
In the early 20th century, a scientific theory called continental drift was proposed about this migration of the continents. That theory was initially ridiculed, but it paved the way for another theory called plate tectonics that scientists have now accepted to explain how Earth’s continents move.
What are 4 pieces of evidence that support the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents, (2) the occurrence of earthquakes, and (3) continental and ocean floor features including mountains, volcanoes, faults, and trenches.
Does Earth becomes smaller or bigger when plates move?
New crust is continually being pushed away from divergent boundaries (where sea-floor spreading occurs), increasing Earth’s surface. But the Earth isn’t getting any bigger.
Which process causes the mantle to melt when a continent is pulled apart?
Subduction is the process in which a dense tectonic plate slips or melts beneath a more buoyant one. Most subduction happens as an oceanic plate slips beneath a less-dense plate.
What are the two most common ways to melt rock in the upper mantle?
There are three basic ways that rocks melt to form the lavas that erupt from volcanoes: decompression, addition of volatiles, and conduction.
What are 3 facts about Mantle?
Planet Earth
- The Mantle is the second layer of the Earth.
- The mantle is divided into two sections.
- The average temperature of the mantle is 3000° Celsius.
- The mantle is composed of silicates of iron and magnesium, sulphides and oxides of silicon and magnesium.
- The mantle is about 2900 km thick.
What is the special feature of the upper mantle that facilitates movement of plates?
The special about the upper mantle is its ability to flow like fluid. The upper mantle has soft weak layer called the asthenosphere, which capable of flowing. This property facilitates the movement of lithospheric plates.
What are the main features of mantle and core?
THE CORE,BENEATH THE MANTLE,IS THE DEEPEST AND HOTTEST LAYER OF THE EARTH.IT IS ALMOST ENTIRELY MADE OF METAL.IT HAS TWO LAYER: THE INNER CORE AND THE OUTER CORE. THE OUTER CORE BORDERS THE MANTLE. THE INNER CORE IS SHAPED LIKE A BALL. Mantle is 2900 km thick .
What are the two main features of core?
The core is made of two layers: the outer core, which borders the mantle, and the inner core. The boundary separating these regions is called the Bullen discontinuity. The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel.
What are 5 facts about the inner core?
5 Facts About the Earth’s Inner Core
- It’s Almost The Size of the Moon. The Earth’s inner core is surprisingly large, measuring 2,440 km (1,516 miles) across.
- It’s Hot…Really Hot.
- It’s Mostly Made of Iron.
- It Spins Faster Than the Surface of the Earth.
- It Creates a Magnetic Field.