Where Illness Spreads and Why · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Why the same germ kills unevenly

Geography · People & Environments · ages 16-18
Name ______________________   Date ____________
  1. Which three factors shape how far an infection spreads?

    • Tall buildings, flags, and festivals
    • Crowded housing, travel links, and poor sanitation
    • Deserts, poems, and birthdays
  2. Which routes can germs travel by?

    • Air, touch, water, food, or insects
    • Only moonlight and radio waves
    • Only cold weather and bad luck
  3. A map of cases shows exactly where each patient caught the germ.

    Circle one:   True   False

  4. Cases cluster near a river district with unsafe wells. What measure matches the route?

    • Earplugs for the whole city
    • New flags for the clinics
    • Clean water for the neighbourhood
  5. Two countries catch the same illness. One has fast testing and clean water, the other does not. What follows?

    • Both lose equal shares of patients
    • The weaker system loses more treatable patients
    • Testing makes the germ stronger
  6. A campaign hands out bed nets in a hot region. Which route does it break?

    • Dirty hands on door handles
    • Insect carriers ferrying disease
    • Loud coughs in empty fields
  7. A crowded district with weak clinics faces a cough-spread germ. Which pair of actions fits best?

    • More crowds plus slower testing
    • Bed nets plus ignoring the sick
    • Ventilation plus fast case finding and isolation
  8. A headline blames a city for an outbreak from its case map alone. What is wrong with that blame?

    • Maps are clues, not verdicts, about where spread happened
    • Cities never appear on maps
    • Counting cases always spreads germs
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Answer key

For grown-ups. Fold this page away before handing over the rest.

Why the same germ kills unevenly W1-mt_U2Hkw5FbiV-s1

  1. Crowded housing, travel links, and poor sanitation · Crowding, movement, and dirty water each widen the spread.
  2. Air, touch, water, food, or insects · Each germ uses routes that shape its geography.
  3. False · Maps show where the sick were counted, not where transmission happened.
  4. Clean water for the neighbourhood · Waterborne illness needs clean water to break its route.
  5. The weaker system loses more treatable patients · Clinics, water, food, and speed of finding cases decide survival.
  6. Insect carriers ferrying disease · Nets block the insects that ferry germs between people.
  7. Ventilation plus fast case finding and isolation · Break the airborne route and find cases fast.
  8. Maps are clues, not verdicts, about where spread happened · The map shows counts by place, not the site of each transmission.
Worksheet · LightMySky