The average of mean temperatures for twelve months give us the mean annual temperature.

Hygrometer measures rainfall.

The horizontal movement of air is called ____________.

What is the actual amount of water vapour present in air called?

Lines joining places have similar temperature at a particular time is called________________________.

Lines joining places have similar atmospheric pressure at a particular time is called________________________.

Lines joining places have similar rainfall at a particular time is called________________________.

Weather report helps farmers to

Mercury expands when heated and contracts when cooled.

The thermometer measure __________________.

Low pressure is an indication of __________ weather.