Mohs' scale scientists to identify the of a mineral.
a. crystal shape
b. hardness
c. color
d. cleavage

The  mohs' scale is used to measure hardness. The Mohs scale of mineral hardness is a qualitative ordinal scale that characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Ibelieve it's celsius. hope this .