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What happens to old seafloor rock down in the trenches?
The trenches catch most of the sediment from the plates that break up and sink deeper into the water. This causes the upper plates to grow.
Radioisotope dating of moon rocks showed that the age of the oldest lunar rock was closest to how many years old?
Rocks from the moon have been dated to about 4.5 billion years old. The oldest earth rocks don't date that far back because the earth "reprocesses" rock, and the oldest rocks we know of on earth date back to about 3.7 to 3.8 billion years. The earth and moon formed at approximately the same time, as did the rest of the solar system.
. Approximately how old is the Earth?
4.Approximately how old is the Earth?
Approximately how old is the Earth?
4.Approximately how old is the Earth?
The Earth is 4.55 billion years old how many millennia old is the earth?
Earth is approx. 4,550,000 millennia old. 1 millennium = 1000 years.
In the process of sea-floor spreading what happens when magma rises to Earth's surface and solidifies?
Yes. Seafloor spreading is the term given to the creation of new seafloor at divergent boundaries. At a divergent boundary, two oceanic plates move apart, which obviously means that something must then surface to fill the void. This is where the magma rises from the Earth's interior and cools to become seafloor. On the other end, at convergent boundaries, the old seafloor is forced under the continental plates, where it is recycled back into the Earth's magma supply.
In the process of sea floor spreading what happens when magma rises to the earths surface and solidifies?
Yes. Seafloor spreading is the term given to the creation of new seafloor at divergent boundaries. At a divergent boundary, two oceanic plates move apart, which obviously means that something must then surface to fill the void. This is where the magma rises from the Earth's interior and cools to become seafloor. On the other end, at convergent boundaries, the old seafloor is forced under the continental plates, where it is recycled back into the Earth's magma supply.
What happens to old seafloor rock down in the trenches?
The trenches catch most of the sediment from the plates that break up and sink deeper into the water. This causes the upper plates to grow.
Why is Earth not getting larger if the seafloor is spreading?
Subduction and folding.The seafloor ,may be "spreading" in the center but that doesn't necessarily mean it's getting bigger; at the edges it may be slipping underneath a continental plate (subduction) or piling up on itself to form mountains (folding).
How did harry hess's hypothsis explain seafloor movement?
It explained seafloor movement because he researched that hot/less dense material rises to Earths crust, at the Mid-Atlantic Ridge. At the hole the magma cools making new seafloor. He also found out that there were new rocks near the Mid-Atlantic Ridge and old ones farther away. Hess also theorized that this seafloor has to filter somewhere- this somewhere is called the subduction zone. The subduction zone is an area where old seafloor sinks and the plates melt it forms into magma, building pressure within the Earth. When there is too much pressure the Earth lets out this energy in Arcs, Volcanic islands, etc.
What was the boat which sink?
Old boat got sink
Why is the earth 4.6 billion years old but the oldest sea floor is only 180 millions years old?
Just as new sea floor forms at mid-ocean ridges, new sea floor is forced back into the mantle at abduction zones. The oldest seafloor is at east and west the edges of the Atlantic Ocean, dating to the breakup of Pangaea.
Farmhouse Sink ?
form_title= Farmhouse Sink form_header= Install a farmhouse sink in your home. What size sink do you want?*= _ [50] What color sink do you want?*= _ [50] Are you replacing an old sink?*= () Yes () No
Do you have to replace your sink if you replace the countertop?
No, you should keep and reuse the old sink.
If new seafloor is being created how does the earth stay the same size?
Because it only gets larger in one direction by getting smaller in another. In the case of ocean ridges, the 'other place' is wherever the crust has subducted into the natle at a plate boundary.
What is the age of the oldest seafloor?
The oldest seafloor is estimated to be around 200 million years old. New oceanic crust is continuously formed at mid-ocean ridges, so the seafloor is constantly being recycled.
Farmhouse?
form_title= Farmhouse Sink form_header= Install a farmhouse sink in your home. What size sink do you want?*= _ [50] What color sink do you want?*= _ [50] Are you replacing an old sink?*= () Yes () No
