Track quiz
Show on a big screenHere are the eleven rules, in the words each bench uses. Use the table if you get stuck. Nothing here asks about you. A real worry goes to a parent, a teacher or a doctor.
| Idea | The rule, as the lab applies it |
|---|---|
| More than not being ill | Health has three sides: physical, mental and social. It is more than not being ill. Sort a thing by what it changes, not by where it happens. |
| How an illness spreads | A pathogen is a germ that causes disease. It has to travel from one living thing to another. It travels by air, water, food, touch or an insect. Each route is a chain of steps. Cut one step and that route stops. |
| Insects that carry germs | A vector is an insect that carries a pathogen. It moves it from one living thing to another. Mosquitoes lay eggs in still water. Take the still water away and there are fewer mosquitoes. |
| The body's own defences | Skin, the airway lining and stomach acid are barriers in the body. Each stops many germs, but not all. Germs that get past meet the immune system inside. |
| The second time | A body that met a germ usually fights it sooner next time. Then it gets less ill. The germ has not changed. The body starts fighting earlier. This protection is called acquired immunity. |
| A vaccine | A vaccine has dead germs, weak germs, or a safe piece. It trains the body before the germ arrives. It helps prevent illness. It does not cure it. |
| Cutting the route | An everyday step cuts a link in a route. The order of the steps matters. A later step can undo an earlier one. |
| Two kinds of illness | A communicable disease is caused by a pathogen. It can spread to other people. A non-communicable disease is usually not caused by a pathogen. It does not spread from person to person. The body, habits, food and surroundings can all play a part. |
| Felt or measured | A symptom is what a person feels. A sign is what others can see or measure. A doctor uses both to find out what is wrong. |
| What an antibiotic does | Antibiotics work against bacteria. They do not work against viruses. Cold and flu come from viruses. A doctor decides if one is needed. |
| Resistant germs | Some bacteria survive an antibiotic and multiply. These are resistant bacteria. Resistant bacteria can spread. Each use of an antibiotic leaves them behind. Using one when it is not needed gives them more chances. The bacteria are resistant, not the person. |
A village has clean water and good food. Nobody talks or plays together. Which side of health is low?
The water route is cut in a made-up village. What happens to the air route?
What is a vector?
Two old tyres holding rainwater are emptied out. What changes?
Skin, airway lining and stomach acid are all working. Do any germs reach the immune system inside?
A body meets the same germ for the second time. What is different?
What does a vaccine do?
A lid goes on the pot. Then a dirty cup is dipped in. Is the water route cut?
Which sentence about asthma is correct?
Which of these is a sign?
A cold is caused by a virus. Will an antibiotic act on it?
Why does using an antibiotic when it is not needed matter?
Chapter 3 is Health: The Ultimate Treasure. Read it in your NCERT book.
Next comes Electricity: Magnetic and Heating Effects. A wire carrying electricity gets warm. A wire wound round an iron nail picks up pins. One current, two effects.
Reveal every answer to finish this lesson.