What is responsible for absorbing the most UV radiation?
Which layer of the atmosphere is likely the most important for life on Earth?
Is all the radiation absorbed in the Earth’s atmosphere is absorbed in the stratosphere?
Air pollution only occurs as a result of human activity. All the radiation absorbed in the Earth’s atmosphere is absorbed in the stratosphere.
What layer of the atmosphere is the most vital for supporting life on Earth a troposphere B stratosphere C mesosphere D thermosphere?
The thermosphere absorbs solar radiation and helps to regulate the Earth’s temperature. All layers of the atmosphere are important for supporting life on the Earth, but the troposphere is the most important as it provides organisms with the air they breathe.
Which two layers of the atmosphere are responsible for the majority?
Which two layers of the atmosphere are responsible for the majority of solar radiation absorption? The stratosphere and thermosphere.
What is the hottest layer of the atmosphere?
Which layer of atmosphere is responsible for the change in weather?
What layer is the densest?
Is the crust the least densest layer?
In relation to the other layers the crust is the thinnest and the least dense layer. It floats on the softer, denser mantle.
What keeps the Earth’s core hot?
There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.
What is the mantle?
The mantle is the mostly-solid bulk of Earth’s interior. The mantle lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth’s total volume.
What is the biblical definition of mantle?
The mantle was originally a cape worn simply to ward off the cold. The mantle was first mentioned in the Old Testament, as a garment worn by several prophets including Elijah and Elisha.
What is an example of Mantle?
The definition of a mantle is a shawl or a cloak. An example of a mantle is a fancy shawl worn over a cocktail dress.
What are the two types of mantle?
- Earth’s mantle is a layer of silicate rock between the crust and the outer core.
- Earth’s mantle is divided into two major rheological layers: the rigid lithosphere comprising the uppermost mantle, and the more viscous asthenosphere, separated by the lithosphere-asthenosphere boundary.
Can we drill to the mantle?
Scientific drilling into the Earth is a way for scientists to probe the Earth’s sediments, crust, and upper mantle. In addition to rock samples, drilling technology can unearth samples of connate fluids and of the subsurface biosphere, mostly microbial life, preserved in drilled samples.
What are the 2 types of crust?
Earth’s crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental crust.
Why is the mantle important?
The Earth’s mantle plays an important role in the evolution of the crust and provides the thermal and mechanical driving forces for plate tectonics. The mantle is also the graveyard for descending lithospheric slabs, and the fate of these slabs in the mantle is a subject of ongoing discussion and controversy.
Is the mantle the thickest layer?
The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the mantle is the thickest layer, while the crust is the thinnest layer.
How does Mantle affect human life?
The movement of materials within the Earth’s mantle is thought to drive plate tectonic movements on the surface, ultimately leading to earthquakes and volcanoes. The mantle is also the Earth’s largest reservoir for many elements stored in mantle minerals.
How old is the mantle?
4.5 billion years
What is a woman’s mantle?
A mantle (from old French mantel, from mantellum, the Latin term for a cloak) is a type of loose garment usually worn over indoor clothing to serve the same purpose as an overcoat. For example, the dolman, a 19th-century cape-like woman’s garment with partial sleeves is often described as a mantle.
Is the asthenosphere part of the mantle?
Asthenosphere, zone of Earth’s mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere. The asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth’s surface.
How thick is Earth’s mantle?
approximately 2,900 km
How deep have we drilled into the earth?
Known as the Kola Superdeep Borehole, the deepest hole ever dug reaches approximately 7.5 miles below the Earth’s surface (or 12,262 kilometers), a depth that took about 20 years to reach.
Where is the crust of the earth the thinnest?
The crust is made up of the continents and the ocean floor. The crust is thickest under high mountains and thinnest beneath the ocean.
Is the mantle liquid?
The mantle, which makes up about 84% of Earth’s volume, is predominantly solid, but behaves as a very viscous fluid in geological time.