Answer:
Temperature
Step-by-step explanation:
If you want to go skating at the ice rink on the open, especially on the pond that froze, you should check the temperature.
Firstly and simply, you need to see how well you should get dressed for the outside activity. Keep in mind your body will get warmer as you skate.
But if you are skating at the frozen pond or a lake, the temperature is important because of the point at which water freezes. The water usually freezes at a temperature of 0 °C or 32 °F.
However, this may change based on the purity of the water and the pressure. Depending on these, water molecules can freeze at different temperature and the scientists have even found water as cool as minus 40°C in the liquid state.
This is why you should skate at the lowest temperature possible to be sure the water is frozen and the ice is thick.