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Rocks formed by the rapid hardening of molten material.

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What did scientists in a submersible see when they observed the mid ocean ridge?

Scientists observed a series of underwater mountains, deep valleys, and hydrothermal vents releasing mineral-rich fluids. They also found unique ecosystems thriving in the extreme conditions near the mid ocean ridge.


What kind of rocks did scientists in a submersible see when they observed the mid ocean ridge that help them realize that new material is being formed in the ocean?

It was lava (volcanic magma) from undersea volcanic vents.


What kind of rocks did scientists in a submersible see when they observers the mid ocean ridge that helped them realize that new material is being formed in the ocean?

It was lava (volcanic magma) from undersea volcanic vents.


What technology did scientists use in the mid-1900s to map the mid- ocean ridge?

they used the magnifier to launch the band to map the mid-ocean ridge


What technology did scientists use in the mids-1900s to map the mid-ocean ridge?

they used the magnifier to launch the band to map the mid-ocean ridge


What technology did scientists use in the mid -1900s to map the mid-ocean ridge?

they used the magnifier to launch the band to map the mid-ocean ridge


What technology did scientists use in the mid-1900s to map the mid-ocean ridge?

Sonar.


What did scientists learn when they mapped the ocean floor in the 1800s?

there is a mid-atlantic ridge


Where did scientists finally find evidence that supported wegeners ideas?

Mid-Ocean Ridge


What ocean is still forming?

Scientists have observed the beginnings of a new ocean basin in the Afar desert in the northeast region of Ethiopia. New ocean basins are still being formed at the Mid-Ocean Ridge in the Atlantic Ocean. This process involves the formation of new basalt. The process of subduction counter-balances the aforementioned, destroying older parts of the ocean floor. This is formally known as sea-floor spreading.


How do scientists explain older and younger rock placement on the ocean floor?

They measure how far away the rock is from the mid-ocean ridge. The farther, the older.


How did scientists discover that rocks farther away from the mid ocean ridge were older than the ones closer to the mid ocean ridge?

Scientists discovered that rocks farther away from the mid-ocean ridge were older than those closer to it through radiometric dating of the rocks. By analyzing the age of the rocks using isotopes with known half-lives, they were able to determine that the rocks get progressively older as you move away from the ridge due to the process of seafloor spreading.