The average distance is about 150 million kilometers (149.6) or 93 million miles (92.9). This is defined as 1 astronomical unit, or AU, and is equal to about 8.2 light-minutes, as light from the Sun takes about 8 minutes to reach Earth.
The definition of a scourge is someone or something that causes a lot of trouble, problems or suffering. An example of a scourge is famine or the outbreak of a disease. YourDictionary definition and usage example.
Kurt CooperZach TaylorCIVE 717April 19, 2011 Introduction ï Local scour can be defined as degradation of river banks and/or bed that is localized to a specific area due to a sudden change in the parameters associated with the river (i.e. change in geometry, slope, flow, or placement of a structure, etc.).