What does the ancient earthquake detector do? it help tell the direction of where it came from and the slightest movement will make the ball fall if you are referring to the ancient china one Edit
Depending on the type of lava flow, the resulting rocks look very different. This was a pahoehoe flow. A lava flow is caused by a volcanic eruption. The lava can flow down the volcano at speeds ranging from 1/24 to 50 meters an hour. They can be 1,300 degrees fahrenheit or more. They are very destructive.
Many people equate low water flow to low system pressure. While it is true that many causes of low water pressure are due to low system pressure, low water flow can also be caused by high pressure. Pressure is typically measured at the pressure gauge on top of the system filter. This blog post will discuss causes of low water flow due to both low and high system pressure.