Tag: safety and first aid

• The hydrological cycle is a prominent method to rejuvenate the freshwater resources. 
• It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets that fall on the earth as rain.
• This continuous recycling of water leads to the recharging of water resources. 
• The solar radiation plays an important role in the water cycle.
  
  Hence, option D is correct.

• The global water cycle describes the water movement globally. It is a complex pathway that includes the passage of water from the gaseous envelope around the planet called the atmosphere, through the bodies of water on the surface of the earth such as the oceans, glaciers, and lakes, and at the same time passing through the soil and rock layers underground. 
• Later, the water is returned to the atmosphere. A fundamental characteristic of the hydrologic cycle is that it has no beginning and it has no end. It can be studied by starting at any of the following processes: evaporation, condensation, precipitation, interception, infiltration, percolation, transpiration, runoff, and storage. 

More the number of water bodies in an area more is evaporation of water in that area. As a result, more clouds are formed and there is an increase in rainfall in that area.

• The process of nitrogen metabolism is not involved in the water cycle. By the process of photosynthesis, plants absorb water from the soil. Through transpiration, they lose water back to the atmosphere through stomata.
•  By the process of evaporation, water from water bodies is condensed leading to the formation of clouds. 
• Clouds then shower rainfall that restores the water evaporated from water bodies and also the groundwater levels.

During evaporation, water takes up energy from its surroundings and cools the environment. It releases energy when it condenses and warms the environment. This causes a change in the temperature as well as the humidity of the surrounding. Thus the correct answer is option D.

The water is a poor conductors of heat so do not heated by conduction.  When water is heated, the water became lighter. Hot water rises up. The cold water from the sides moves  down towards the source of heat. This water also gets hot and rises and water from the sides moves down.  This process continues till the whole water gets heated. This mode of heat transfer is known as convection.

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets which fall on the earth as rain. The process of condensation that forms rain is also known as precipitation.

• The hydrological cycle is a prominent method to rejuvenate freshwater resources.
• It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets that fall on the earth as rain. This continuous recycling of water leads to the recharging of water resources.
• It includes the interconversion of different states of water. The ice present in the glaciers melts due to the overheating of the earth and enters the hydrological cycle.
  
  

Runoff is one of the ways by which water moves across earth's surface, it can be both surface runoff and channel runoff. As it flows, the water may seep into the ground, evaporate into the air, stored in lakes or reservoirs, which are then to be extracted for agricultural or other human uses.