WEEKLY QUIZ 8TH GRADERS SCIENCE

Specify the causative agent of typhoid fever:

• Salmonella enterіtіdіs

• Salmonella typhіmurіum

• Salmonella anatum

• Salmonella іnfantіs

• Salmonella typhі

a physical feeling or problem that 

shows that you have a particular illness

• Symptoms 

• Disease 

• illness 

• pathogen 

a type of sickness or disease

• Symptoms 

• Disease 

• illness 

• pathogen

any small organism, such as a virus or a bacterium that can cause disease

• Symptoms 

• Disease 

   

• illness 

• pathogen

a condition of a person, animal, or plant in which its body or structure is harmed because an organ or part is unable to work as it usually does

• Symptoms 

• Disease 

   

• illness 

• pathogen

Select all the Common water-borne diseases

• Cholera

• Typhoid

   

• dysentery 

• flu

Which of the following is not a wayy to prevent waterborne diseases

• washing of hands

• purifying water

• eating street food always

• boiling water

What does chlorination do to the water?

• Removes microorganisms
• Cleans the water
• Makes the water taste nice
• Removes twigs and sediment

Used to separate an insoluble solid from liquid or soluble solid

• Filtration

• Distillation

• Crystallisation

• Evaporation

Which of the following water purification method(s) can remove microorganisms?

(1) Boiling

(2) Filtration

(3) Distillation

(4) Chlorination

• A. (2) and (3) only

• B. (3) and (4)only

• C. (1) and (3) only

• D. (1), (3) and (4)