Science [1 Marks Each] M.C.Q.

The inland lakes depend on rains or the water table (ground water).

Change of liquid to vapour.

Water vapour condenses on dust particles present in atmosphere to form tiny droplets of water which float in air and known as cloud.

Drought.

Heat energy of sun is same as solar energy.

Groundwater at selected places.

All of the above.

A lot of salt deposits are present in our earth's crust. They are carried by rain water in dissolved form and increase the salinity of seas slowly over the time.

In those areas where it rains excessively.

The condensation of water vapour is responsible for the formation of water droplets on the outer surface of the glass.

Condensation.

Rain water forms the primary source of water on the land.

Clouds are formed due to evaporation and condensation.

Transpiration is a process in which there is loss of water from plants as water vapour through the pores of their leaves.

Positively charged

Chemical treatment through which the water has to pass before its supply through taps.

Liquid form of water is rain.

The process of water cycle is shown in the given figure.

In cloud formation water vapours change into small droplets of water.

Drying wet clothes is an activity which does not involve use of water.

Lack of rain water harvesting infrastructure i.e., underground cemented pits decreases water table at a place.

Evaporation is the process in which water changes into water vapour.

Warm sunny day

Temperature plays an important role in the inter-conversion of water from liquid to solid-ice and gaseous state, steam.

Sea water contains a lot of dissolved salts and when the evaporation of the sea water occurs, these salts are left behind.

Due to the sunrays, the water vapour present in the atmosphere condenses to form dew drops which fall on the blades of grass, leaves of plants etc., during early winter mornings.

‘Catch water where it falls’ is the basic idea behind rainwater harvesting.

Changing water into vapours is called evaporation.

Water vapour condenses and fall on the earth in the form of rain.

Circulation of water between ocean and land.

The heat of sun evaporate the most water from Earth's surface.

Saline water is hard due to dissolved salts in it. Therefore, it is not used for the given purposes.

Floods cause extensive damage to crop fields, villages and forests causing damage to property, human life, domestic animals, crops and wild animals of the forests.

The rate of evaporation increases on increasing the temperature and on increasing the surface area. A glass of water kept in a room has minimum surface area in the given options, so rate of evaporation will be slowest.

Rainwater, river water and sea water are the examples of surface water.

Rain forests

Level of groundwater.

Benjamin Franklin

Dissolved air in water.

Ground water is the source of well water and spring water.

The presence of water vapour in air leads to the formation of fog and mist at suitable temperature.

Soil erosion takes place naturally due to floods.

Steam

Ponds, rivers and ground water get polluted by man and factories.