Side slits are the resultant of
subduction
, a geological process wherein a tectonic plate moves under another plate. A side slit is basically the place where the process of subduction occurred. In addition, the subducting plate is the one that goes under the other plate, which is called the overriding plate.
What do side slits represent?
The side slits stand for
where subduction has occurred and the ocean floor has sunk in
. Also, the space under the paper stands for the oceanic crust of the Earth.
What geological feature is formed at the two side slits?
Scientists determined that the same process formed the perfectly symmetrical stripes on both side of
a mid-ocean ridge
. The continual process of seafloor spreading separated the stripes in an orderly pattern. Oceanic crust slowly moves away from mid-ocean ridges and sites of seafloor spreading.
What do the side cuts stand for what does the space under the paper stand for?
What does the space under the paper stand for? The side slits stand for
old crust sinking back into the mantle of the Earth
. The space under the paper stands for the stands for the mantle itself.
What do stripes represent for seafloor spreading?
These surveys revealed a series of invisible magnetic “stripes” of normal and reversed polarity in the sea floor, like that shown in the figure below. The patterns reflect
the creation and spreading of oceanic crust along the
mid-oceanic ridges. Basalt forming at the ridge crest picks up the existing magnetic polarity.
Why is it important that your model has an identical pattern of stripes on both sides of the center slit?
Why is it important that your model have an identical pattern of strips on both sides of the center slit? The model has identical strips because,
as the magma rises at the mid ocean ridge 1⁄2 goes to the right and 1⁄2 goes to the left of the mid ocean ridge
. Each one of these strips represents Earth’s magnetic history.
What do the lines on the bond paper represent?
Solid lines represent
bonds in the plane
of the paper or screen. Solid wedges represent bonds that point out of the plane of the paper or screen, towards the observer. Hashed wedges or dashed lines (thick or thin) represent bonds that point into the plane of the paper or screen, away from the observer.
At which boundaries is seafloor destroyed?
You are correct that the seafloor is destroyed at
subduction zones
, but it is simultaneously being created at mid-ocean ridges. see figure 1 . Figure 1: Seafloor spreading at a mid-ocean ridge(where new crust is being created) and it’s destruction at a subduction zone.
Which geological features are associated with divergent boundaries?
A divergent plate boundary often forms
a mountain chain known as a ridge
. This feature forms as magma escapes into the space between the spreading tectonic plates.
Where is active seafloor spreading occurring today?
Where is active sea floor spreading occurring today? Seafloor spreading is the movement of old rock that is being pushed by the new young oceanic crust. This would be a divergent since the plates are separating from each other. Active seafloor spreading is occurring at
mid-ocean ridges
.
Who proposed the theory of seafloor spreading?
Harry Hess
: One of the Discoverers of Seafloor Spreading.
What are the features of seafloor?
Features of the ocean include
the continental shelf, slope, and rise
. The ocean floor is called the abyssal plain. Below the ocean floor, there are a few small deeper areas called ocean trenches. Features rising up from the ocean floor include seamounts, volcanic islands and the mid-oceanic ridges and rises.
What evidence supports the theory of seafloor spreading?
Abundant evidence
supports the major contentions of the seafloor-spreading theory. First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.
What is the first step of seafloor spreading?
1.
A long crack in the oceanic crust forms at a mid ocean ridge
. 2. Molten material rises and erupts along the ridge.
What is the importance of seafloor spreading in understanding the origin of the plate?
Seafloor spreading
helps explain continental drift in the theory of plate tectonics
. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere.
Why do tectonic plates move?
The heat from radioactive processes within the planet’s interior causes the plates
to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
