Liquid or Solid:

There is not forever a defined answer to the question, "Is this substance a solid or a liquid?" It can base on the observer's point of reference. Few substances can be considered solid in the short-term time logic though liquid in the long-term logic. An illustration is the mantle of the Earth, the layer of rock among the crust and the core. In long-term time logic, pieces of the crust, termed as tectonic plates, float about on the top of the mantle like scum on the surface of a hot tub of liquid. This is manifest as continental drift and is apparent whenever the Earth is computed over periods of millions of years. From one moment to the next, though, and even from hour to hour or from day to day, the crust seems firmly fixed on the mantle. The mantle behaves like a solid in the short-term logic though like a liquid in the long-term logic.

Visualize that we could turn ourselves into creatures whose life spans were measured in trillions of years therefore 1 million years seemed to pass like a moment. Then, from our point of view, Earth's mantle would behave like a liquid with low viscosity, merely as water seems to us in our real state of time awareness. If we could become creatures whose whole lives last only a minute fraction of a second, then liquid water would view to take eons to get out of a glass tip on its side, and we would finish that this substance was solid, or a else a liquid with tremendously high viscosity. The way we define the state of a substance can based on the temperature, and it also can depend on the time frame over which the substance is examined.