What is it called when sea plates pull apart?
Divergent Boundaries — Spreading Plates As plates made of oceanic crust pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge.
What allowed the differentiation of the Earth’s layers to happen?
The differentiation between these layers is due to processes that took place during the early stages of Earth's formation (ca. 4.5 billion years ago). At this time, melting would have caused denser substances to sink toward the center while less-dense materials would have migrated to the crust.
Which part of the Earth has the greatest density quizlet?
Which layer of the Earth has the greatest density and pressure? Inner core.
Which of the following is a way we believe that the early atmosphere of the Earth differed from the atmosphere we have today?
Which of the following is a way we believe that the early atmosphere of the Earth differed from the atmosphere we have today? The average temperature on planet Earth is higher than you would expect just from the heating of sunlight alone. What is the explanation for this?
When two continental plates pull apart what forms?
When two plates are moving away from each other, we call this a divergent plate boundary. Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges.
Where tectonic plates move apart?
divergent boundaries Plates move apart from each other along divergent boundaries. In the ocean basins these boundaries are the mid-ocean ridges, where new oceanic crust forms. Where continents are pulled apart, large gaps, or rift systems, develop.
What is the name of the process by which Earth was organized into layers of different density materials?
Denser materials, like iron and nickel, sank to the core. Lighter materials, like aluminum and silicon, stayed closer to the Earth's surface. The process in which the chemical elements separated by density is called planetary differentiation.
What was the separation of the Earth into layers while it was molten was a result of?
The separation of the Earth into layers while it was molten was the result of the: differing densities of the elements that make up the Earth.
What planet has the least density?
Saturn Jupiter is the largest planet in the solar system, but it's Saturn—the solar system's second largest planet—that takes the prize for least dense. It's less dense than water, which has led many people to postulate that it would float.
When a large nucleus breaks apart or is broken apart into two smaller pieces this is called?
nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy. In nuclear fission the nucleus of an atom breaks up into two lighter nuclei.
Which gas in Earth’s atmosphere has a significant role in the heating of the atmosphere?
Which gas in Earth's atmosphere has a significant role in the heating of the atmosphere? Carbon Dioxide.
How did the reducing atmosphere on primitive Earth gradually transform into an oxidizing atmosphere?
Solution. The primitive reducing atmosphere of the earth was slowly converted to the oxidizing atmosphere due to the development of Chromatophores. Explanation: Chromatophores are photosynthetic pigments found in primitive microorganisms which release oxygen during photosynthesis.
What are the convergent boundary?
A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction.
When an oceanic and continental plates meet what is formed?
When oceanic crust converges with continental crust, the denser oceanic plate plunges beneath the continental plate. This process, called subduction, occurs at the oceanic trenches. The entire region is known as a subduction zone. Subduction zones have a lot of intense earthquakes and volcanic eruptions.
When two plates pull apart from one another they create?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
Which of the following is a boundary between two plates that are moving apart?
Divergent boundaries – where two plates are moving apart. Divergent boundaries can form within continents but will eventually open up and become ocean basins.
What do you call the geological processes that occurs beneath the surface of the Earth?
Energy for the parts of the crustal cycle near the Earth's surface is solar and gravitational energy (which control erosion and weathering), whereas energy that drives processes beneath the surface is geothermal and gravitational energy (which control uplift, subsidence, melting, and metamorphism).
What separates the layers of the Earth?
discontinuities The Earth is formed of three concentric layers: the core, the mantle and the crust; these are separated by transition zones called discontinuities.
Is known as the Earth’s twin?
Thanks to Venus Express, Taylor now describes Venus as “Earth's twin, but separated at birth.”
Why is Mars called the Red Planet?
Mars is known as the Red Planet. It is red because the soil looks like rusty iron. Mars has two small moons. Their names are Phobos (FOE-bohs) and Deimos (DEE-mohs).
When a large nucleus breaks apart into two smaller pieces this is called quizlet?
a large nucleus breaks apart into smaller pieces. nuclear fusion.
What is fission process?
Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms—also known as fission products. Additional neutrons are also released that can initiate a chain reaction. When each atom splits, a tremendous amount of energy is released.
How do greenhouse gases such as CO2 and n2o contribute to an increase in Earth’s atmospheric temperature?
Greenhouse gases in the atmosphere absorb that heat, bouncing some back to the Earth's surface and releasing some into the atmosphere. Greater concentrations of greenhouse gases mean more solar radiation is trapped within the Earth's atmosphere, making temperatures rise.
Which gases contribute to the greenhouse effect nitrogen and helium carbon dioxide and methane carbon dioxide and helium nitrogen and methane?
Main Greenhouse Gases
|Fossil fuel combustion; Deforestation; Cement production
|Fossil fuel production; Agriculture; Landfills
|Fertilizer application; Fossil fuel and biomass combustion; Industrial processes
Which among the list of gases is present in least amount in primitive earth’s atmosphere?
The primitive reducing atmosphere of earth was rich in water vapour, carbon monoxide, carbon dioxide, nitrogen and hydrogen. An oxygen was absent in the primitive atmosphere.
Which of the following did not exist on primitive earth in free form just before the origin of life?
Oxygen did not occur in the free state as the prevailing reduced substances immediately combined with it to form oxides (iron oxides, silicon oxides).
What is a divergent boundary?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust.
What is convergent in geography?
( kən-vûr′jənt ) A tectonic boundary where two plates are moving toward each other. If the two plates are of equal density, they usually push up against each other, forming a mountain chain.
What is a continental continental convergent boundary?
A continental-continental convergent boundary describes the collision of two tectonic plates composed of continental lithosphere. Just like an oceanic-oceanic convergent boundary, this type of boundary involves the compression of the same type of lithosphere.
What is convergent boundary?
A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone.