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The correct answer is B. is reduced by treading tyres
Treading tyres increases friction.
sharon kalunda answered the question on July 30, 2019 at 12:09
- In a certain investigation pupils heated different materials and recorded their findings.
Which one of the following correctly shows the pupils’ findings? (Solved)
In a certain investigation pupils heated different materials and recorded their findings.
Which one of the following correctly shows the pupils’ findings?
Materials that felt hot quickly-------------------------- Materials that did not feel hot quickly A. Rubber----------------------------------------------------- Iron.
B. Copper ----------------------------------------------------Aluminium.
C. Plastic --------------------------------------------------Glass.
D. Steel----------------------------------------------------- Wood.
Date posted: July 30, 2019. Answers (1)
- To save a person who has touched an exposed electric wire, one should(Solved)
To save a person who has touched an exposed electric wire, one should
A. Push the person away using dry wood
B. Pull the person from the wire
C. Pour cold water on the person
D. Shake the person vigorously.
Date posted: July 30, 2019. Answers (1)
- The diagram below represents a set-up that was used to demonstrate a certain aspect of heat.
The aspect demonstrated was (Solved)
The diagram below represents a set-up that was used to demonstrate a certain aspect of heat.
The aspect demonstrated was
A. Conduction in different solids
B. Convection in water
C. Conduction in water
D. Expansion in different solids.
Date posted: July 30, 2019. Answers (1)
- The diagram below represents a thermometer used to measure temperature of a certain liquid.
From the thermometer, the temperature of the liquid is(Solved)
The diagram below represents a thermometer used to measure temperature of a certain liquid.
From the thermometer, the temperature of the liquid is
A. 30°C
B. 27°C
C. 20°C
D. 10°C.
Date posted: July 30, 2019. Answers (1)
- Which one of the following diagrams represents what is observed when water is poured into a tin can with holes of the same size at...(Solved)
Which one of the following diagrams represents what is observed when water is poured into a tin can with holes of the same size at different depths?
Date posted: July 30, 2019. Answers (1)
- Which one of the following pests is correctly matched with the part of the crop it attacks?(Solved)
Which one of the following pests is correctly matched with the part of the crop it attacks?
Pest-------------------- Part of crop attacked
A. Aphids ------------------Grains.
B. Stalk borer--------------- Leaves.
C. Cutworm----------------- Stems.
D. Weevils------------------ Leaves.
Date posted: July 30, 2019. Answers (1)
- The following is a feeding relationship that was observed in a certain habitat.
Maize grains —> Rats—>K—> Hawks
Which one of the following is represented by...(Solved)
The following is a feeding relationship that was observed in a certain habitat.
Maize grains —> Rats—>K—> Hawks
Which one of the following is represented by K?
A. Frogs.
B. Snakes.
C. Weaver birds.
D. Lizards.
Date posted: July 30, 2019. Answers (1)
- The chart below represents a simple classification of crops.
Which one of the following crops are Correctly represented by W, X, Y and Z?(Solved)
The chart below represents a simple classification of crops.
Which one of the following crops are Correctly represented by W, X, Y and Z?
W------------- X----------------- Y ----------------------------Z
A. Sorghum ------Peas --------------Sisal------------------------- Sunflower.
B. Peas ---------Wheat------------- Sunflower---------------------- Cotton.
C. Green grams-- Wheat -------------Sisal -------------------------Pawpaw.
D. Rice ---------Green grams -------Kales-------------------------- Cotton.
Date posted: July 30, 2019. Answers (1)
- The effects of heat on ice that make it change to gaseous form are (Solved)
The effects of heat on ice that make it change to gaseous form are
A. Freezing and condensing
B. Melting and evaporating
C. Condensing and evaporating
D. Freezing and melting.
Date posted: July 30, 2019. Answers (1)
- Which one of the following methods of soil conservation can be used to control splash erosion? (Solved)
Which one of the following methods of soil conservation can be used to control splash erosion?
A. Making terraces.
B. Building gabions.
C. Planting cover crops.
D. Practicing contour farming.
Date posted: July 30, 2019. Answers (1)
- The following are some activities carried out in an experiment to investigate drainage in soil.
(i) Put equal amounts of three types of soil in...(Solved)
The following are some activities carried out in an experiment to investigate drainage in soil.
(i) Put equal amounts of three types of soil in separate funnels.
(ii) Place the funnels on the mouth of each of the three plastic bottles.
(iii) Put cotton wool in the neck of each funnel.
(iv) Pour equal amounts of water on each type of soil at the same time.
Which one of the following is the CORRECT order of the activities?
A. (i).(ii).(iii),(iv).
B. (iii),(ii),(i), (iv).
C. (i).(iii),(ii),(iv).
D. (ii).(i).(iii).(iv).
Date posted: July 30, 2019. Answers (1)
- Which one of the following consists only of a pair of animals that have constant body temperature?(Solved)
Which one of the following consists only of a pair of animals that have constant body temperature?
A. Shark and whale.
B. Tortoise and ostrich.
C. Shark and bat.
D. Bat and ostrich.
Date posted: July 30, 2019. Answers (1)
- The following are signs and symptoms of anaemia EXCEPT (Solved)
The following are signs and symptoms of anaemia EXCEPT
A. Breathlessness
B. Pale white eyes
C. Muscle wastage
D. Tiredness.
Date posted: July 30, 2019. Answers (1)
- The percentage of the component of air in the atmosphere used by legumes to make proteins is (Solved)
The percentage of the component of air in the atmosphere used by legumes to make proteins is
A. 78%
B. 21%
C. 0.97%
D. 0.03%.
Date posted: July 30, 2019. Answers (1)
- Which one of the following pairs consist only of inclined planes? (Solved)
Which one of the following pairs consist only of inclined planes?
A. Wheelbarrow and see-saw.
B. Road winding up a hill and staircase.
C. Ladder and see-saw.
D. Wheelbarrow and staircase.
Date posted: July 30, 2019. Answers (1)
- Which one of the following is the most effective preventive measure against the spread of sexually transmitted infections among the youth in schools? (Solved)
Which one of the following is the most effective preventive measure against the spread of sexually transmitted infections among the youth in schools?
A. Seeking medical attention.
B. Use of condoms.
C. Circumcision.
D. Abstinence.
Date posted: July 30, 2019. Answers (1)
- A lactating mother should feed on a diet rich in calcium and phosphorous in order to (Solved)
A lactating mother should feed on a diet rich in calcium and phosphorous in order to
A. Enable her to regain strength
B. Replace blood lost during birth
C. Improve the immunity of the baby
D. Strengthen the bones of the baby.
Date posted: July 30, 2019. Answers (1)
- Substances that have definite mass and volume are (Solved)
Substances that have definite mass and volume are
A. Solids only
B. Solids and liquids
C. Liquids only
D. Liquids and gases.
Date posted: July 30, 2019. Answers (1)
- The first step in obtaining salt from a mixture of salt solution and pieces of copper wire is (Solved)
The first step in obtaining salt from a mixture of salt solution and pieces of copper wire is
A. Filtering
B. Winnowing
C. Using a magnet
D. Evaporating to dryness.
Date posted: July 30, 2019. Answers (1)
- Which one of the following consists of groups of food that mainly contain fats? (Solved)
Which one of the following consists of groups of food that mainly contain fats?
A. Avocado, groundnuts, coconut.
B. Maize. coconut, beans.
C. Irish potatoes, groundnuts, maize.
D. Irish potatoes, beans, avocado.
Date posted: July 30, 2019. Answers (1)