Page 18 - ..Science E-book Prim.5 2024-2025 1st term part2_Neat
P. 18
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
over 80
water makes desalination
plants.
you
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 59
