The correct order of increasing strength of their magnetic fields is : Venus, Earth, Jupiter. Probes found that Venus do not have a significant magnetic field. Earth has a Field ration of 2.8 while Jupiter has 4.5.Jupiter, being the largest planet in our solar system, also has the largest magnetic field, generating a magnetosphere larger than the Sun.
Rift valley is a region which is lower than normal land area. This is formed by the interaction of the earth's tectonic plates. This linear shaped land is found between mountain ranges created by geologic rift.