Tag: evs

The circulation of water between ocean, land and atmosphere is known as the water cycle.

 The energy that powers the water cycle come from the sun.

Rain water is the purest form of water as it does not contain any minerals, ions, dust particles etc. thus it can be used in lab.

While rain is the immediate source, the ultimate source of water on Earth, through the hydrological cycle, is the oceans and seas, which provide the moisture that eventually falls as rain.

The main source of water for inland lakes is ground water.

Potable water means drinking water. Well, river and lake contain drinking water as these all contain either rainwater and groundwater which is suitable for drinking. The sea which contains salty water that is not suitable for drinking is not a source of potable water.

The water cycle is driven by the sun.

The water in the oceans and seas has many salts dissolved in it. The most abundant ions in sea water are $Cl^-, Na^+. SO _4^{2-}, Mg^{2+}, K^+$.

True. Well water is an example of surface water because it appears on the surface and it is not ground water.

Option B is correct.