Question

Geologists studying the crust under the sea have discovered that under some oceans like the
Long Answer Que
Read the following paragraph and comment on sea floor spreading.
Pacific Ocean, there are mid ocean ridges or ranges. They are formed by the lava rising up from
the mantle. The eruptions on the ridge create a new ocean floor made of basalt rocks, which then
spreads laterally from the ridge. Thus
, the mid-ocean ridges contain the newest crust formed on
the planet
. This fresh crust is being slowly pulled away from the ridge widening the ocean basin
.
This leads to what is called 'sea floor spreading:​

Answer 1

Answer:

Sea-floor spreading is what happens at the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor. As the plates move apart, new material wells up and cools onto the edge of the plates.

Explanation:

1. A long crack in the oceanic crust forms at a mid ocean ridge.

2. Molten material rises and erupts along the ridge.

3. Older rock moves outward on both sides of the ridge.

4. Molten material cools and forms a strip of solid rock in the centre of the ridge.

5. As more molten material flows into the crack, a new strip of rock is formed.