Relation between the strength of the driving, the velocity dispersion, and the SFR. Top panel: mass-weighted velocity dispersion measured in the STRENGTH simulations at 58 Myr at the kiloparsec scale. The velocity dispersion parallel to the disk plane σ_disk is defined by . Bottom panel: SFR as a function of the velocity dispersion parallel to the disk. The dashed line is the value of the SFR given by the SK relation.