What is the evidence for sea floor 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 evidence did the Deep Sea Drilling Project?
It investigated some 624 sites in the Atlantic, Pacific, and Indian oceans, not only revealing the presence of deep ocean salt domes (which themselves may indicate the presence of oil) but also supporting the theory of plate tectonics by providing evidence of continental drift and seafloor renewal.
How did drilling by the Glomar Challenger support seafloor spreading?
Glomar Challenger was made to help Harry Hess with the theory of Seafloor Spreading by taking rock samples confirming that the farther from the Mid-ocean ridge, the older the rock was.
What is the first step in the seafloor spreading process?
A crack forms in oceanic crust. Molten rock rises up through oceanic crust. Molten rock solidifies at the center of the ridge.
Which information did the Glomar Challenger study in 1968?
ANSWER: Glomar Challenger studies about the “age of rocks in various places in the ocean” in 1968. EXPLANATION: Glomar Challenger was a “deep sea research vessel” for marine geology and oceanography studies.
Which is one piece of evidence of seafloor spreading fossil material continent material drilled core samples ocean water samples?
Explanation: Eruptions of molten material, which results in continent material is a piece of evidence of seafloor spreading.
When scientists analyzed drilling samples from the Glomar Challenger study which Discovery did they make about rocks in relation to Mid-Ocean Ridge?
When scientists analyzed drilling samples from the Glomar Challenger study, which discovery did they make about rocks in relation to a mid-ocean ridge? Rocks closer to the ridge are newer.
Are the four major ocean basins connected?
Arctic, the Atlantic, the Indian, and the Pacific. These basins are connected. Explanation: The main oceanic basins in the world are connected to each other, they are: the Arctic, the Atlantic, the Indian and the Pacific.
Is dividing the ocean beneficial?
This is often called the global ocean. The idea of naming and dividing the global ocean is merely a formality used to help people better organize and understand Earth’s major bodies of water. Dividing and naming Earth’s ocean water is helpful in studying ocean characteristics to better understand the Earth.
What are the four major ocean basins?
Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic. However, most countries – including the United States – now recognize the Southern (Antarctic) as the fifth ocean basin.
How much of ocean is unexplored?
What is the newest sea creature found?
Scientists have for the first time identified a small gelatinous blob in the deep sea as a new species, using only high-definition underwater cameras. The creature, officially known as Duobrachium sparksae, is a new species of ctenophore, or comb jelly.