Monday, 26 February 2018

Essential part of our daliy life

                                                              WATER


The properties of water make                 
it extraordinarily useful.             
 In fact, water is essential to                           
life: without water , plants
and animals could not survive.
water can also be harnessed to
transport loads and even to
generated electricity. 









WHY IS WATER ESSENTIAL FOR LIFE ?

water is chemically neutral. yet
 dissolves many substances, which


 is why it is so important for life.
 Water is found in every cell of the
 human body. Plants need water for 
building cells and also for transporting nutrients from the roots to the leaves.



WHAT'S SO SPECIAL ABOUT WATER ?






Water is found naturally as solid ice, liquid water and gaseous water vapour. This is unusual and happens because of the strong bounds between its two hydrogen and one oxygen atom. When cooled,most substance with similar sized atoms to water do not freeze until -30 deg C. But water freezes at 0 deg.C  



CAN YOU SQUASH WATER?

Fluid like water cannot be squashed. So if you push fluid through a pipe, it will push out the other end. Hydraulics power, such as in a forklift truck, uses fluid-filled pipes working like this to lift loads. Hydraulic means 'water' , but most hydraulic system use oil to avoid rust problems.