The Atlantic Ocean is entirely in the northern hemisphere
<span>strike slip fault
A strike slip fault is when two tectonic plates are pressed together and slide past each other, often causing earthquakes. The two plates, the Pacific and north American, meet at the San Andreas fault. The shear stress - stress force parallel to the plane of motion of the material - of this plate movement caused the fault line and continues to exacerbate it.</span>
It began when Galileo tried to use his tidal theory to prove the movement of the Earth around the Sun. Galileo theorized that because of the Earth's motion, borders of the oceans like the Atlantic and Pacific would show one high tide and one low tide per day.
Isthmus it is generally surrounded by water, and it is a strip of land connecting two different land masses. Hope this helps.