Question

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge _____?

Answer 1

The rocks on the two sides of the ridge move outward.

Answer 2

Spread away on both sides and get aligned with the magnetic properties of the earth.

Step-by-step explanation:

• Harry Hess in his seafloor spreading theory has stated that the seafloor spreads at a continuous rate and that newer crust is fired by the recycling of the older crust form below and the upwelling of lavas or magmas at this mid-oceanic ridges this leads to the formation of the two distinct types of rocks with opposite magnetic properties.

• Moving away from the rides we find the older rocks and moving closer we find newer rocks or slabs.