The Quaternary undersea valley Fosse Dangaered, and Castle Hill landslip at the English portal, caused concerns. Identified by the 1964â65 geophysical survey, the Fosse Dangaered is an infilled valley system extending 80 metres (262 ft) below the seabed, 500 metres (1,640 ft) south of the tunnel route in mid-channel.
Best Answer: Magnetic forces can be caused by an electric current. Or they can be caused by magnetic domains aligned correctly. These domains are magnetic moments created by moving atoms in the material who have an electric dipole (usually).
Fun Facts about Earthâs Magnetism for Kids. 1  Heat and the Earthâs spin keep the outer core moving. 2  This movement causes electrical currents in the core, which is mostly iron. 3  The electrical currents create a magnetic field that extends into space. 4  The magnetic field is tilted slightly from the Earthâs axis.un Facts about Earthâs Magnetism for Kids. 1  Heat and the Earthâs spin keep the outer core moving. 2  The magnetic field is tilted slightly from the Earthâs axis. 3  Sometimes the magnetic field is stronger than at other times. 4  The magnetic South Pole also moves. 5  The magnetosphere is the magnetic force that extends into space.