Solids dissolve in water of a higher or lower temperature depending on what the solid actually is.
Solubility is linked to temperature of the liquor and falls sharply with temperature. Hence we see sugar dissolves quickly in hot liquor and very slowly at lower temperatures.
No, molecules at higher temperatures move more quickly than those at lower temperatures. Higher temperatures provide molecules with more kinetic energy, causing them to move faster.
No, energy does not naturally flow as heat from a lower temperature to a higher temperature. Heat energy always flows from a higher temperature to a lower temperature in accordance with the second law of thermodynamics.
Thermal energy always flows from higher temperature to lower temperature. This is the nature of heat.
lower
The higher the altitude the lower the temperature.
the temperature of the earth is lower than the Earth.
lower
True, heat will naturally flow from a higher temperature to a lower temperature. This flow of heat is governed by the second law of thermodynamics, which states that heat will always transfer from a region of higher temperature to a region of lower temperature until thermal equilibrium is reached.
It's the heat energy. "The energy can neither be created or nor destroyed but can be transformed from one form to another". If one system is with higher temperature and if another system of lower temperature is placed, the temperature gradually moves from higher to lower.
From higher temperature region to lower temperature region.
At higher altitude the temperature is lower.