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Results for "water"
45 total matches📖 Lesson Notes Matches (7)
P.6
Topic 9: Science at Home and in Our Community
Clean Water vs. Safe Water & Domestic Purification →
1. Clean Water vs. Safe Water In science and public health, there is a fundamental difference between clean water and safe water: Clean Water: Water that is physically cl...
P.6
Topic 9: Science at Home and in Our Community
Making Local Salt from Plant Ash & Municipal Water Works →
Making Local Salt from Plant Ash In Ugandan communities, an alkaline filtrate (local salt) is traditionally prepared for cooking and food preservation using gravity filtration: ...
P.6
Topic 9: Science at Home and in Our Community
The Science of Laundry & Fabric Care →
Why We Wash Clothes To remove visible dirt, dust, and perspiration. To destroy disease-causing germs. To destroy the eggs and breeding grounds of ectoparasites ...
P.6
Topic 10: Accidents and First Aid
Burns, Scalds, and Fainting Management →
Introduction to First Aid An accident is a sudden, unforeseen occurrence that causes bodily harm, injury, or death. First Aid is the immediate, temporary help given to an injured person ...
P.6
Topic 10: Accidents and First Aid
Near Drowning, Poisoning, and Foreign Bodies →
1. Near Drowning A condition where a person is submerged in water and their lungs fill with fluid, stopping normal respiration. First Aid Steps: Quickly rescue the person...
P.6
Topic 11: Sanitation
Latrine Systems: VIP, Pit, Ecosan, Flush Toilet →
What is Sanitation? Sanitation is the general cleanliness of our physical environment to promote human health and prevent the outbreak of diarrhoeal diseases like cholera, typhoid, dysentery, and intesti...
P.6
Topic 11: Sanitation
Waste Disposal & Vector Control in the Community →
Proper Waste Disposal Methods Rubbish Pit: A pit dug in the compound for dry solid waste. Burning and burying prevent vector breeding. Compost Pit:...
❓ Question Bank Matches (30)
P.5
Section A (1 Mark)
Types of Changes in the Environment
Topical Evaluation
State the role of anhydrous calcium chloride in the laboratory investigation of rusting.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
To absorb all moisture/water vapour from the air inside the test tube (keeps the air dry).
To absorb all moisture/water vapour from the air inside the test tube (keeps the air dry).
P.5
Section A (1 Mark)
Keeping Goats, Sheep, and Pigs
National PLE Question
Why is the floor of a modern pigsty built with a gentle slope towards the drainage channel?
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
To allow easy and rapid drainage of urine and wash water, keeping the pen dry and hygienic.
To allow easy and rapid drainage of urine and wash water, keeping the pen dry and hygienic.
P.5
Section A (1 Mark)
Primary Health Care (PHC)
National PLE Question
State any one element of Primary Health Care.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
Immunisation (EPI) OR Safe water and sanitation OR Maternal and child health OR Health education OR Food and nutrition OR Essential drugs OR Control of endemic diseases OR Treatment of common diseases.
Immunisation (EPI) OR Safe water and sanitation OR Maternal and child health OR Health education OR Food and nutrition OR Essential drugs OR Control of endemic diseases OR Treatment of common diseases.
P.5
Section B (4 Marks)
Types of Changes in the Environment
Topical Evaluation
Study the experimental setups below showing nails left in four test tubes for five days:
(a) In which test tube did the nail rust fastest? (1 mark)
(b) Why didn't the nail in Test-Tube B (boiled water + oil) rust? (1 mark)
(c) What was the purpose of Test-Tube C containing anhydrous calcium chloride? (1 mark)
(d) State the two environmental conditions necessary for iron to rust. (1 mark)
(a) In which test tube did the nail rust fastest? (1 mark)
(b) Why didn't the nail in Test-Tube B (boiled water + oil) rust? (1 mark)
(c) What was the purpose of Test-Tube C containing anhydrous calcium chloride? (1 mark)
(d) State the two environmental conditions necessary for iron to rust. (1 mark)
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Test-Tube D (Salty water)
(b) Oxygen was absent (driven out by boiling and blocked by the oil layer)
(c) To keep the air completely dry by absorbing moisture
(d) Oxygen and Moisture (water)
(a) Test-Tube D (Salty water)
(b) Oxygen was absent (driven out by boiling and blocked by the oil layer)
(c) To keep the air completely dry by absorbing moisture
(d) Oxygen and Moisture (water)
P.5
Section B (4 Marks)
Types of Changes in the Environment
National PLE Question
(a) State the difference between a physical change and a biological change. (1 mark)
(b) Give any two examples of physical changes involving heat gain. (2 marks)
(c) Name the physical process that occurs when morning dew turns into water vapour as the sun rises. (1 mark)
(b) Give any two examples of physical changes involving heat gain. (2 marks)
(c) Name the physical process that occurs when morning dew turns into water vapour as the sun rises. (1 mark)
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) A physical change does not take place in living things and is reversible, whereas a biological change takes place exclusively in living organisms and is irreversible.
(b) (i) Melting (ii) Evaporation / Boiling
(c) Evaporation
(a) A physical change does not take place in living things and is reversible, whereas a biological change takes place exclusively in living organisms and is irreversible.
(b) (i) Melting (ii) Evaporation / Boiling
(c) Evaporation
P.5
Section B (4 Marks)
Types of Changes in the Environment
Topical Evaluation
Human activities bring about changes in the environment:
(a) Define the term afforestation. (1 mark)
(b) Give any two reasons why people cut down trees on a large scale (deforestation). (2 marks)
(c) State one way in which cutting down trees leads to severe environmental flooding. (1 mark)
(a) Define the term afforestation. (1 mark)
(b) Give any two reasons why people cut down trees on a large scale (deforestation). (2 marks)
(c) State one way in which cutting down trees leads to severe environmental flooding. (1 mark)
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Afforestation is the massive planting of trees in an area where there have never been trees before.
(b) (i) To get land for farming and settlement (ii) To get wood fuel (firewood and charcoal) and timber.
(c) Tree roots that absorb excess rainwater are destroyed, and bare soil easily allows rapid surface runoff into rivers and lakes.
(a) Afforestation is the massive planting of trees in an area where there have never been trees before.
(b) (i) To get land for farming and settlement (ii) To get wood fuel (firewood and charcoal) and timber.
(c) Tree roots that absorb excess rainwater are destroyed, and bare soil easily allows rapid surface runoff into rivers and lakes.
P.5
Section B (4 Marks)
Types of Changes in the Environment
National PLE Question
A Primary 5 pupil heated a tin can with water, sealed it tightly, and poured cold water on it.
(a) What happened to the tin can? (1 mark)
(b) Explain why that happened to the can. (2 marks)
(c) Which physical state transition occurred inside the can? (1 mark)
(a) What happened to the tin can? (1 mark)
(b) Explain why that happened to the can. (2 marks)
(c) Which physical state transition occurred inside the can? (1 mark)
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) The tin can crushed / collapsed inward.
(b) Cold water condensed the steam inside into liquid water, creating a partial vacuum (low air pressure) inside. The higher atmospheric air pressure outside crushed the can inward.
(c) Condensation (gas/steam turning into liquid water).
(a) The tin can crushed / collapsed inward.
(b) Cold water condensed the steam inside into liquid water, creating a partial vacuum (low air pressure) inside. The higher atmospheric air pressure outside crushed the can inward.
(c) Condensation (gas/steam turning into liquid water).
P.5
Section B (4 Marks)
Primary Health Care (PHC)
National PLE Question
(a) Write down the full meaning of the abbreviation PHC. (1 mark)
(b) State any two core principles of Primary Health Care. (2 marks)
(c) Why is Primary Health Care considered more economical for developing nations like Uganda than curative hospital care? (1 mark)
(b) State any two core principles of Primary Health Care. (2 marks)
(c) Why is Primary Health Care considered more economical for developing nations like Uganda than curative hospital care? (1 mark)
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Primary Health Care.
(b) (i) Community participation (ii) Affordability / Accessibility / Equity / Appropriate technology.
(c) Because preventive measures (sanitation, clean water, immunisation) cost very little compared to expensive drugs and hospital admission.
(a) Primary Health Care.
(b) (i) Community participation (ii) Affordability / Accessibility / Equity / Appropriate technology.
(c) Because preventive measures (sanitation, clean water, immunisation) cost very little compared to expensive drugs and hospital admission.
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
Name two methods of obtaining clean water for washing at home.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
Filtration
Decantation
Filtration
Decantation
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
In which method of making water clean do you first allow the impurities to settle at the bottom of a container?
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
Decantation (or Sedimentation).
Decantation (or Sedimentation).
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
How does chlorine make water safe for drinking?
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Correct Answer / Guide:
Chlorine kills germs / pathogens in the water.
Chlorine kills germs / pathogens in the water.
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
Why is water obtained by the distillation method not recommended for drinking at home?
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Correct Answer / Guide:
Distilled water lacks essential mineral salts required by the human body to stay healthy.
Distilled water lacks essential mineral salts required by the human body to stay healthy.
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
How does boiling make water safe for drinking?
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Correct Answer / Guide:
The high temperature (100°C) denatures and kills all disease-causing germs in the water.
The high temperature (100°C) denatures and kills all disease-causing germs in the water.
P.6
Section A (1 Mark)
Science at Home and in Our Community
Topical Evaluation Activity
Give any two examples of water impurities.
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Correct Answer / Guide:
Any two of: Silt/mud, human/animal wastes, agro-chemicals, industrial wastes, or rust.
Any two of: Silt/mud, human/animal wastes, agro-chemicals, industrial wastes, or rust.
P.6
Section A (1 Mark)
Accidents and First Aid
Topical Evaluation Activity
How is a burn different from a scald?
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Correct Answer / Guide:
A burn is a skin injury caused by dry heat (hot metals, flames, acid, or electricity), whereas a scald is caused by wet/moist heat (boiling water, steam, hot porridge, or soup).
A burn is a skin injury caused by dry heat (hot metals, flames, acid, or electricity), whereas a scald is caused by wet/moist heat (boiling water, steam, hot porridge, or soup).
P.6
Section A (1 Mark)
Accidents and First Aid
Topical Evaluation Activity
Give any one reason why a burnt or scalded part of the skin is dipped in cold water immediately.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
Any one of:
To cool down the temperature around the skin tissue.
To reduce swelling and relieve severe pain.
To prevent the formation of blisters and further deep cell damage.
Any one of:
To cool down the temperature around the skin tissue.
To reduce swelling and relieve severe pain.
To prevent the formation of blisters and further deep cell damage.
P.6
Section A (1 Mark)
Accidents and First Aid
Topical Evaluation Activity
What kind of water is recommended for use during tepid sponging, and why should very cold water be avoided?
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Correct Answer / Guide:
Lukewarm water is used. Very cold water must be avoided because it causes shivering, which reflexively increases internal body heat production.
Lukewarm water is used. Very cold water must be avoided because it causes shivering, which reflexively increases internal body heat production.
P.6
Section A (1 Mark)
Accidents and First Aid
Topical Evaluation Activity
Why is it not advisable to give a convulsing or fainted person food to eat or water to drink?
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Correct Answer / Guide:
It can cause the food or drink to enter the windpipe (trachea) instead of the esophagus, leading to choking and sudden death.
It can cause the food or drink to enter the windpipe (trachea) instead of the esophagus, leading to choking and sudden death.
P.6
Section A (1 Mark)
Sanitation
Topical Evaluation Activity
State the function of the U-trap in a water closet (flush toilet).
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Correct Answer / Guide:
The U-trap holds a small pool of clean water which acts as a liquid barrier to prevent bad smells and foul sewer gases from entering the toilet room.
The U-trap holds a small pool of clean water which acts as a liquid barrier to prevent bad smells and foul sewer gases from entering the toilet room.
P.6
Section A (1 Mark)
Classification of Animals
UNEB PLE Past Paper
The diagram below shows an animal in the group of invertebrates. (Snail diagram) Name the animal shown.
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Correct Answer / Guide:
A snail (or Garden snail / Water snail).
A snail (or Garden snail / Water snail).
P.6
Section B (4 Marks)
Science at Home and in Our Community
Topical Evaluation Activity
The diagram below shows a simple setup of making water clean. Study and use it to answer the questions that follow:
[ Water poured here ]
↓
|~~~~~~~~~~~~~~~|
| Coarse Stones | <--- Container T
\ /
\ Clean Water/
\___________/
↓
[---------]
| S | <--- Container S
|_________|
(a) Name the method used above.
(b) Apart from coarse stones, name any two other local materials that can be placed in container T.
(c) Why should the clean water obtained in container S be boiled before drinking?
[ Water poured here ]
↓
|~~~~~~~~~~~~~~~|
| Coarse Stones | <--- Container T
\ /
\ Clean Water/
\___________/
↓
[---------]
| S | <--- Container S
|_________|
(a) Name the method used above.
(b) Apart from coarse stones, name any two other local materials that can be placed in container T.
(c) Why should the clean water obtained in container S be boiled before drinking?
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Filtration.
(b) Any two of: Fine sand, coarse sand, charcoal paste, pebbles, cotton wool, or clean cloth.
(c) It is clean but not safe because it still contains germs (filtration only removes physical dirt, not microscopic bacteria). It must be boiled to kill those germs.
(a) Filtration.
(b) Any two of: Fine sand, coarse sand, charcoal paste, pebbles, cotton wool, or clean cloth.
(c) It is clean but not safe because it still contains germs (filtration only removes physical dirt, not microscopic bacteria). It must be boiled to kill those germs.
P.6
Section B (4 Marks)
Science at Home and in Our Community
Topical Evaluation Activity
The diagram below shows a simple water purification system. Study and use it to answer the questions that follow:
Swampy water ──► Filtered ──► Point W ──► Stored in the jerrycan
(a) Name any one activity that can be done to water at Point W.
(b) Why is swampy water filtered before being taken to Point W?
(c) State the importance of passing water through Point W.
(d) Mention any one other activity that can be done to swampy water before being taken to Point W to make it clear.
Swampy water ──► Filtered ──► Point W ──► Stored in the jerrycan
(a) Name any one activity that can be done to water at Point W.
(b) Why is swampy water filtered before being taken to Point W?
(c) State the importance of passing water through Point W.
(d) Mention any one other activity that can be done to swampy water before being taken to Point W to make it clear.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Boiling (or adding water treatment chemicals/chlorinating).
(b) To remove large physical suspended dirt and impurities.
(c) To kill disease-causing germs to make the water safe for drinking.
(d) Decantation.
(a) Boiling (or adding water treatment chemicals/chlorinating).
(b) To remove large physical suspended dirt and impurities.
(c) To kill disease-causing germs to make the water safe for drinking.
(d) Decantation.
P.6
Section B (2 Marks)
Science at Home and in Our Community
Topical Evaluation Activity
Name the step used in cleaning clothes that:
(a) Removes excess water from the clothes.
(b) Removes soapy water from the washed garments.
(a) Removes excess water from the clothes.
(b) Removes soapy water from the washed garments.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Wringing (or squeezing/spinning).
(b) Rinsing.
(a) Wringing (or squeezing/spinning).
(b) Rinsing.
P.6
Section B (3 Marks)
Science at Home and in Our Community
Topical Evaluation Activity
(a) What is meant by the term silting?
(b) State the major cause of silting in water bodies.
(c) Apart from killing fish, give one way in which silting affects aquatic life.
(b) State the major cause of silting in water bodies.
(c) Apart from killing fish, give one way in which silting affects aquatic life.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Silting is the deposition and accumulation of eroded soil particles into water bodies.
(b) Soil erosion (triggered by cultivating or overgrazing near river banks).
(c) Any one of:
Blocks the oxygen supply to aquatic animals.
Destroys aquatic habitats and breeding grounds.
Exposes fish to predators due to cloudy/turbid water.
(a) Silting is the deposition and accumulation of eroded soil particles into water bodies.
(b) Soil erosion (triggered by cultivating or overgrazing near river banks).
(c) Any one of:
Blocks the oxygen supply to aquatic animals.
Destroys aquatic habitats and breeding grounds.
Exposes fish to predators due to cloudy/turbid water.
P.6
Section B (4 Marks)
Science at Home and in Our Community
Topical Evaluation Activity
Match the laundry terms in Part A with their correct scientific meanings in Part B:
Sorting
Wringing
Rinsing
Soaking
Sorting
Wringing
Rinsing
Soaking
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
Sorting: Grouping clothes before washing or soaking based on color and texture.
Wringing: Squeezing clothes to remove excess water.
Rinsing: Putting clothes in clean water to completely remove soapy residues.
Soaking: Putting dirty clothes in soapy water to soften dirt before washing.
TOPIC 10: ACCIDENTS AND FIRST AID
Sorting: Grouping clothes before washing or soaking based on color and texture.
Wringing: Squeezing clothes to remove excess water.
Rinsing: Putting clothes in clean water to completely remove soapy residues.
Soaking: Putting dirty clothes in soapy water to soften dirt before washing.
TOPIC 10: ACCIDENTS AND FIRST AID
P.6
Section B (4 Marks)
Accidents and First Aid
Topical Evaluation Activity
A child suddenly removed the cover of a saucepan full of boiling water. One of the child's arms was injured.
(a) Name the exact substance that injured the child.
(b) What kind of accident did the child get?
(c) State the first aid you would immediately give to the child.
(d) Give any one way in which the child would avoid the accident mentioned in (b) above.
(a) Name the exact substance that injured the child.
(b) What kind of accident did the child get?
(c) State the first aid you would immediately give to the child.
(d) Give any one way in which the child would avoid the accident mentioned in (b) above.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Steam (or hot water droplets).
(b) A scald.
(c) Immediately dip/place the injured arm in clean cold water.
(d) Any one of: Use insulators/holder cloths to remove covers, avoid playing near cooking stoves, or cook from a raised place.
(a) Steam (or hot water droplets).
(b) A scald.
(c) Immediately dip/place the injured arm in clean cold water.
(d) Any one of: Use insulators/holder cloths to remove covers, avoid playing near cooking stoves, or cook from a raised place.
P.6
Section B (4 Marks)
Accidents and First Aid
Topical Evaluation Activity
(a) State the difference between drowning and near drowning.
(b) Give any two common causes of near drowning.
(c) State any one way you can help save a near-drowned casualty.
(b) Give any two common causes of near drowning.
(c) State any one way you can help save a near-drowned casualty.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Drowning is dying due to lungs being filled with water, whereas near drowning is a condition where lungs are filled with water and breathing fails, but the casualty is not yet dead.
(b) Any two of: Inability to swim, capsizing of boats in a storm, floods, or getting a muscle cramp while in deep water.
(c) Pull them out of the water immediately and apply mouth-to-mouth resuscitation (Kiss of life) followed by chest compressions (CPR).
(a) Drowning is dying due to lungs being filled with water, whereas near drowning is a condition where lungs are filled with water and breathing fails, but the casualty is not yet dead.
(b) Any two of: Inability to swim, capsizing of boats in a storm, floods, or getting a muscle cramp while in deep water.
(c) Pull them out of the water immediately and apply mouth-to-mouth resuscitation (Kiss of life) followed by chest compressions (CPR).
P.6
Section B (4 Marks)
Sanitation
Topical Evaluation Activity
(a) What physical condition results when a patient passes out watery stools many times a day?
(b) State two physical signs of the condition mentioned in (a) above.
(c) What first aid treatment is given to a victim of the condition in (a) to restore balance?
(b) State two physical signs of the condition mentioned in (a) above.
(c) What first aid treatment is given to a victim of the condition in (a) to restore balance?
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Dehydration (loss of water and essential mineral salts).
(b) Any two of: Sunken eyes, dry lips, pale skin that does not snap back when pinched, or extreme body weakness.
(c) Administering Oral Rehydration Solution (ORS) or extra fluids like coconut water.
(a) Dehydration (loss of water and essential mineral salts).
(b) Any two of: Sunken eyes, dry lips, pale skin that does not snap back when pinched, or extreme body weakness.
(c) Administering Oral Rehydration Solution (ORS) or extra fluids like coconut water.
P.6
Section B (4 Marks)
Sanitation
Topical Evaluation Activity
(a) Give the difference between an Ordinary Pit Latrine and a VIP Latrine in terms of structural coverings.
(b) What material is used in an Ecosan latrine to dry human waste, and what is its role?
(c) State one major maintenance rule for a Water Closet (Flush Toilet) bowl.
(b) What material is used in an Ecosan latrine to dry human waste, and what is its role?
(c) State one major maintenance rule for a Water Closet (Flush Toilet) bowl.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) An ordinary pit latrine requires a tight-fitting lid over its drop hole, whereas a VIP latrine must be left open without a lid at all times.
(b) Wood ash (or soil/lime) is sprinkled over the feces. Its role is to dehydrate the waste, neutralize smells, and raise pH to destroy pathogens.
(c) Never throw hard materials (like stones, pads, or newspapers) into the bowl to prevent blockage.
TOPIC 12: THE REPRODUCTIVE SYSTEM
(a) An ordinary pit latrine requires a tight-fitting lid over its drop hole, whereas a VIP latrine must be left open without a lid at all times.
(b) Wood ash (or soil/lime) is sprinkled over the feces. Its role is to dehydrate the waste, neutralize smells, and raise pH to destroy pathogens.
(c) Never throw hard materials (like stones, pads, or newspapers) into the bowl to prevent blockage.
TOPIC 12: THE REPRODUCTIVE SYSTEM
P.6
Section B (4 Marks)
Science at Home and in Our Community
National Mock Championship
(a) Give the meaning of the term siltation (silting).
(b) Identify the major cause of siltation.
(c) State any two effects of siltation in water bodies.
(b) Identify the major cause of siltation.
(c) State any two effects of siltation in water bodies.
Show UNEB Marking Guide & Answer
Correct Answer / Guide:
(a) Siltation is the deposition and accumulation of eroded soil particles into water bodies.
(b) Soil erosion.
(c) Any two of:
It causes flooding in local compounds.
It blocks food and light for aquatic life.
It reduces the oxygen supply to fish, leading to death.
(a) Siltation is the deposition and accumulation of eroded soil particles into water bodies.
(b) Soil erosion.
(c) Any two of:
It causes flooding in local compounds.
It blocks food and light for aquatic life.
It reduces the oxygen supply to fish, leading to death.
🗂️ Key Vocabulary & Flashcards (8)
Topic 9 • Water Science
P.6
Clean Water
Water that is physically clear and free from visible suspended clay particles and debris.
Topic 9 • Water Science
P.6
Safe Water
Water that is biologically pure and completely free from pathogenic disease-causing germs.
Topic 9 • Laundry
P.6
Scum
An insoluble, gray, sticky precipitate formed when soap reacts with calcium and magnesium salts in hard water.
Topic 9 • Water Science
P.6
Adsorption
The chemical property where gases, odors, and toxins stick to the large surface area of porous activated charcoal.
Topic 10 • Burns & Scalds
P.6
Burn vs. Scald
A burn is caused by DRY heat (flames, hot metal, electricity); a scald is caused by WET heat (boiling water, steam, hot porridge).
Topic 10 • Burns & Scalds
P.6
First Aid for Burns
Immediately dip or pour clean, cold water over the injury to lower tissue temperature and prevent blister formation.
Topic 11 • Latrines
P.6
U-Trap Water Seal
A curved water-filled bend beneath a flush toilet that blocks dangerous sewer gases from entering the room.
Topic 11 • Vector Control
P.6
Female Anopheles Mosquito
A vector that breeds in clean, stagnant water and transmits the malaria parasite (Plasmodium).