Untreated water is called_______ _________, which contains many _________and micro organisms.

________ makes up about 60% of our body weight and about 90% of our blood.

Removing impurities form water is called __________ _________.

Sedimentation is the simplest method for purifying water.

Sedimentation can remove insoluble and soluble impurities.

The solid material remaining on the filter is residue.

Filtration cannot remove insoluble impurities and most micro organisms in water.

matching

Sand is an example of ____________.

Which of the following is NOT a method of water purification?

Filtration can remove ______________ in reservoir water.

The liquid collected from distillation is called the ______________.

Which of the following is the safest to drink?

Matching 

___________ can remove the solid impurities,solible minerals and micro-organisms in water.

The method of purifying water by passing though a filter to remove large or suspended soilds is called _______