Page 24 - E-Science Prim.5 2025 U2. _Neat
P. 24
The Earth is covered by 70 % of water. We can’t drink the water of
oceans and seas as it is a mixture of water, salts, minerals, gases, living
organisms and dead organisms.
Drinking salty Egypt has
water makes over 80
desalination
you plants.
dehydrated
faster “lose
water faster”
Desalination: removing salts from water.
Filtration: removing any large materials (seaweed, shells &
fish).
Evaporation: boiling the filtered water, water vapor rises
leaving salts and minerals.
Cooling the water vapor, turns it into liquid water safe to drink.
First Term 108
