The imaginary lines highlighted on the map travel from north to south and are used to measure distance from the prime meridian. they are

 lines of longitude

Explanation: lines of longitude are the imaginary lines that travel from the north and south of the Prime Meridian that help find exact location

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

no sé si entiendes español pero te daría la respuesta si lo supiera, pero lo siento mucho