Why is water spilled purposely on the slides in water parks? [2 MARKS]
Reason : 2 Marks Water is spilled purposely on the slides to decrease the friction between the humans and the slide. Water here acts as a lubricant.
What is the process used to obtain pure water for industrial purpose and why? [2 MARKS]
If a glass of water is spilled on floor, it disappears within no time. Why?
List any two characteristics of drinking water. Why is the water obtained from oceans and seas unfit for drinking purposes? [3 MARKS]
What is the purpose of national parks, wildlife sanctuaries and biosphere reserves? [3 MARKS]