MASS

The gram (SI unit symbol: g)  is a metric system unit of mass.
Originally defined as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre, and at the temperature of melting ice" (later 4 °C), a gram is now defined as one one-thousandth of the SI base unit, the kilogram, or 1×10−3 kg, which itself is defined as being equal to the mass of a physical prototype preserved by the International Bureau of Weights and Measures.

VOUME

Volume is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains. Volume is often quantified numerically using the SI derived unit, the cubic metre. The volume of a container is generally understood to be the capacity of the container, i. e. the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.

weather

what is weather?

weather is the state of the atmosphere
what is climate?
climate is the weather on a place over a long period of time.

pschiometer an instrument to measure relative humidity

this no meter an instrument to measure temperature

Depples radar: A type afrador that calculates distance and shows directions of movement of weather.

SEVERE WEATHER HAIL STORM

WEATHER MAP

A Weather Map lets us know the weather conditions in a region

WEATHER FORECAST

The Weather Forecast lets us know in advance how is the weather going to be in future days