SOLAR SYSTEM

Detailed explanation-1: -They found that the farther away from the ridge the samples were taken, the older the rocks were. The youngest rocks were always in the center of the ridges. This showed that sea-floor spreading really has taken place.

Detailed explanation-2: -The Glomar Challenger is a drilling ship that recovered drilling samples from the ocean floor. They studied the age of the rocks sampled. They found that the farther from the ridge, the older the rock. underwater canyons called deep-ocean trenches.

Detailed explanation-3: -Scientists found that the youngest rocks are located at the mid-ocean ridges. The ages of the rocks become increasingly older in samples obtained farther from the ridges, adding to the evidence for seafloor spreading.

Detailed explanation-4: -What they discovered was that the magnetism of the ocean floor around mid-ocean ridges was divided into matching “stripes” on either side of the ridge. The specific magnetism of basalt rock is determined by the Earth’s magnetic field when the magma is cooling.

Detailed explanation-5: -Where are the youngest sediments found, compared to the Mid-Atlantic Ridge? It is youngest at the opening of the ridge.

Detailed explanation-6: -At a mid-ocean ridge, molten material rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. As the molten material cools, it forms a strip of solid rock (new ocean floor) in the center of the ridge.