Air, Water & Weather Worksheet-9
Fill in the blank
The blanket of air surrounding the Earth's surface is known as ______.
The process in which water is cleaned by passing it through filter paper is called _____.
The process in which the insoluble impurities settle down is called _______.
The amount of water vapour present in the air is called _______.
The process in which water is gently poured out after sedimentation is called _______.
The process in which chlorine is added to kill germs is called _______.
The movement of the Earth around the sun is called______.
The heat of the sun changes water into water vapour by a process called _______.