Here is how one reference describes it [1]: Sea-floor spreading is driven by crust formation along the mid-ocean ridges, meandering undersea mountain ranges that span Earth like the seams of a baseball. Oceanic crust is continually produced by magma welling up along the centerlines of the mid-ocean ridges.
Watering the grass every single day for 15 minutes. This turns the lawn into a shallow-rooted water junkie that demands a water fix every day just to soldier on. Instead of watering shallowly every day for 15 minutes, water deeply once a week for an hour or so (or how ever long it takes to apply an inch of water). Your lawn will be healthier and more drought-tolerant.
This is the average amount of water your sprinkler puts out in 15 minutes. (This will provide you with a good guideline amount. For increased accuracy, repeat steps 1 & 2 several times, placing the gauges at different distances from your sprinkler.) Use this chart to see how much time it will take you to water one inch.