Science 8 Online Revision 9: SE 4

Using sanitary habits to maintain health and prevent illness

• Infection

• Disease

• Hygiene

• Toxin

Anything causing danger or risk to health

• Calorie

• Vector

• Hazard

• Hygiene

Caused by invasion of a pathogen, often causing harm to tissues

• Infection

• Infectious Disease

• Hygiene

• Epidemic

Illness or sickness caused by genes, infection, toxicity, nutritional imbalance, etc.

• Disease

• Hygiene

• Epidemic

• Protozoa

Nonliving pathogen that is capable of infecting and reproducing within living hosts: may spread rapidly throughout populations.

• Virus

• Vector

• Fungi

• Disease

A rapidly spreading outbreak of disease affecting widespread regions across the world ( ex: smallpox, TB, certain flu outbreaks)

• Epidemic

• Pandemic

• Protozoa

• Bacteria

A rapidly spreading outbreak of disease affecting many large populations( example: typhoid)

• Disease

• Epidemic

• Pandemic

• Bacteria

Ticks are an example of this way of transmitting (spreading) disease

• Air-borne

• Vector

• Touching a surface

• Contaminated food or water

Infectious diseases are caused by _________ in the body.

• pathogens

• decomposers

Which of the following is an example of direct contact with an infected person?

• sneezing

• shaking hands