
KCPE 2006 Science
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Question 1 of 50
1. Question
2 pointsSweat glands in the skin of a human body are located in the
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Question 2 of 50
2. Question
2 pointsWhich one of the following parts of a human body produces urine?
Correct
This question tested the knowledge of the urinary path in the human body. The male and female urinary systems are similar, differing only in the length of the urethra. Urine is formed in the kidneys through ultrafiltration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, urine stored in the bladder is then discharged through the urethra.
Incorrect
This question tested the knowledge of the urinary path in the human body. The male and female urinary systems are similar, differing only in the length of the urethra. Urine is formed in the kidneys through ultrafiltration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, urine stored in the bladder is then discharged through the urethra.
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Question 3 of 50
3. Question
2 pointsThe diagram below represents the reproductive system in the female human body
Fertilization takes place in the part labelled
Correct
Fertilization takes place in the fallopian tubes/oviducts and the fertilized egg implants itself in the walls of the uterus (Part M). Part L is the ovary which is where the eggs are produced and stored until they are released ready for fertilization.
Incorrect
Fertilization takes place in the fallopian tubes/oviducts and the fertilized egg implants itself in the walls of the uterus (Part M). Part L is the ovary which is where the eggs are produced and stored until they are released ready for fertilization.
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Question 4 of 50
4. Question
2 pointsThe following are some of the physical changes that take place during adolescence
(i) Hips become broader
(ii) Chest and shoulders become broader
(iii) Pimples may appear on the face
(iv) Voice breaks
(v) Pubic hair grows
Which of the changes take place in a girl?
Correct
Here one needed to correctly identify the different physical changes that take place during adolescence in males and in females.
For girls, the physical changes around puberty include:
- changes in body shape and height (hips and breasts)
- growth of pubic and body hair
- the start of periods?(menstruation).
For boys, the physical changes include:
- changes in body shape and height (shoulders grow broader)
- start of wet dreams
- growth of body and facial hair
- changes to voice/ breaking of voice.
Incorrect
Here one needed to correctly identify the different physical changes that take place during adolescence in males and in females.
For girls, the physical changes around puberty include:
- changes in body shape and height (hips and breasts)
- growth of pubic and body hair
- the start of periods?(menstruation).
For boys, the physical changes include:
- changes in body shape and height (shoulders grow broader)
- start of wet dreams
- growth of body and facial hair
- changes to voice/ breaking of voice.
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Question 5 of 50
5. Question
2 pointsWhich one of the following groups consists of only diseases that are immunisable?
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Question 6 of 50
6. Question
2 pointsThe following are stages of HIV infection:
(i) Window stage.
(ii) Symptoms.
(iii) Fullblown.
(iv) Incubation.
Which one of the following is the CORRECT order of the stages?
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Question 7 of 50
7. Question
2 pointsThe following are effects of drug abuse:
(i) Rape.
(ii) Addiction.
(iii) Lack of concentration.
(iv) Truancy.
(v) Impaired judgement.
Which of them are all health effects?
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Question 8 of 50
8. Question
2 pointsOne evening, a pupil noticed a bright heavenly body that was not twinkling. The heavenly body was most likely
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Question 9 of 50
9. Question
2 pointsThe reason for using a biro pen cap as a pivot in the construction of an improvised wind vane is to make the arrow
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Question 10 of 50
10. Question
2 pointsWhich one of the following statements is TRUE about the planet Mars? It is
Correct
The planet nearest to the sun is Mercury while the brightest one is Venus (hence known as the evening star). The smallest planet is Mercury followed by Pluto, Mars, Venus, Earth, Uranus, Neptune, Saturn and finally Jupiter in that order.
Incorrect
The planet nearest to the sun is Mercury while the brightest one is Venus (hence known as the evening star). The smallest planet is Mercury followed by Pluto, Mars, Venus, Earth, Uranus, Neptune, Saturn and finally Jupiter in that order.
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Question 11 of 50
11. Question
2 pointsWhich one of the following is a leguminous plant?
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Legumes belong to a family of flowering plants having pods(legumes) as fruits and root nodules enabling storage of nitrogen-rich material. Other well-known examples of legumes include peas, beans, clover etc.
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Legumes belong to a family of flowering plants having pods(legumes) as fruits and root nodules enabling storage of nitrogen-rich material. Other well-known examples of legumes include peas, beans, clover etc.
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Question 12 of 50
12. Question
2 pointsFertilization in plants takes place when
Correct
After pollination, when pollen grains land on the stigma of a flower of the same species, a tiny tube develops on the stigma and runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule and when the two gametes combine, fertilization occurs and their chromosomes join.
Incorrect
After pollination, when pollen grains land on the stigma of a flower of the same species, a tiny tube develops on the stigma and runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule and when the two gametes combine, fertilization occurs and their chromosomes join.
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Question 13 of 50
13. Question
2 pointsWhich of the following groups only consists of non-flowering plants?
Correct
Non-flowering plants are those that do not produce flowers or seeds. They mainly reproduce using spores or fungi, with the exception of gymnosperms that produce seeds, but not flowers. Common examples include ferns, mosses, fungi and ornamental plants.
Incorrect
Non-flowering plants are those that do not produce flowers or seeds. They mainly reproduce using spores or fungi, with the exception of gymnosperms that produce seeds, but not flowers. Common examples include ferns, mosses, fungi and ornamental plants.
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Question 14 of 50
14. Question
2 pointsWhich of the following groups of plants have the same type of root system?
Correct
Here, we first identify, which group consists of all the given plants as either monocots or dicots. Monocots have fibrous root system while dicots have tap root systems.
Incorrect
Here, we first identify, which group consists of all the given plants as either monocots or dicots. Monocots have fibrous root system while dicots have tap root systems.
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Question 15 of 50
15. Question
2 pointsWhich one of the following parasites destroys wool in sheep?
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Question 16 of 50
16. Question
2 pointsThe toothless gap in the lower jaw of herbivores is for
Correct
This gap is known as the diastema
Incorrect
This gap is known as the diastema
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Question 17 of 50
17. Question
2 pointsWhich one of the following animals has the same number of legs as the tick?
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In the larval stage, ticks have 6 feet, and as an adult tick, they have 8 legs. This distinguishes ticks from insects, which have 6 legs, but they have as many legs as adult mites, scorpions and spiders.
Incorrect
In the larval stage, ticks have 6 feet, and as an adult tick, they have 8 legs. This distinguishes ticks from insects, which have 6 legs, but they have as many legs as adult mites, scorpions and spiders.
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Question 18 of 50
18. Question
2 pointsWhich one of the following is a filter feeder?
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Filter-feeder birds/animals feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure.
Incorrect
Filter-feeder birds/animals feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure.
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Question 19 of 50
19. Question
2 pointsWhich one of the following is NOT an immediate sign of ill health in livestock?
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Question 20 of 50
20. Question
2 pointsWhich one of the following is a method of softening hard water?
Correct
Water softening is the process through which calcium and magnesium ions are eliminated from hard water. Methods of water softening are ion exchange, boiling/distillation, use of washing soda/lime and reverse osmosis.
Incorrect
Water softening is the process through which calcium and magnesium ions are eliminated from hard water. Methods of water softening are ion exchange, boiling/distillation, use of washing soda/lime and reverse osmosis.
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Question 21 of 50
21. Question
2 pointsWhich one of the following practices will help to prevent the spread of cholera?
Correct
We prevent spread of cholera by good hygiene practices.
Incorrect
We prevent spread of cholera by good hygiene practices.
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Question 22 of 50
22. Question
2 pointsWhich one of the following NEED NOT be the same when investigating drainage in different types of soil?
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Question 23 of 50
23. Question
2 pointsThe following are effects of soil erosion:
(i) Small holes in the ground
(ii) Top layer of soil missing
(iii) Small and shallow channels in the ground
(iv) V-shaped trenches in the ground
Which effects are as a result of splash and rill types of erosion?
Correct
- Rain drop or splash erosion:?Erosion preceded by the destruction of the crumb structure due to the impact of falling raindrop on the surface of soil.
- Sheet erosion: It is the fairly uniform removal of soil in thin layers from the land surface, often scarcely perceptible, especially when caused by wind. Areas where loose, shallow topsoil overlies compact soil are most susceptible to sheet erosion.
- Rill erosion:?A form of water erosion in which numerous very small and more or less straight channels are produced; the channels get obliterated by ordinary use. It can be removed by normal tillage operations.
- Gully erosion: A form of water erosion in which gullies are produced by combination of unattended rills.
- Stream bank erosion:?Stream banks are eroded by water either flowing over the sides of a stream or scouring at the base. It is aggravated by removal of vegetation, over grazing or cultivation near the stream banks.
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Question 24 of 50
24. Question
2 pointsWhich of the following liquids mix?
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Liquids which mix are known as “miscible liquids” while ?immiscible liquids? do not mix.
Incorrect
Liquids which mix are known as “miscible liquids” while ?immiscible liquids? do not mix.
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Question 25 of 50
25. Question
2 pointsThe diagram below represents a setup that can be used to demonstrate a certain property of metals.
Which property of metals was being demonstrated?
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Question 26 of 50
26. Question
2 pointsA pupil investigating a certain aspect of pressure in a liquid used a setup shown in the diagram below.
What conclusion could the pupil make from the investigation?
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Question 27 of 50
27. Question
2 pointsThe temperature at which a substance freezes is the same temperature at which the substance
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Question 28 of 50
28. Question
2 pointsWhich one of the following consists only of substances that have no definite shape but have definite volume?
Correct
Solids have definite shape and definite volume, liquids have no definite shape but have definite volume, gases have no definite shape and no definite volume.
Incorrect
Solids have definite shape and definite volume, liquids have no definite shape but have definite volume, gases have no definite shape and no definite volume.
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Question 29 of 50
29. Question
2 pointsThe diagram below represents a setup that can be used to demonstrate heat transfer in air.
For the demonstration to work, a burning candle must be placed at
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Question 30 of 50
30. Question
2 pointsThe percentage of the component of air that is fixed by bacteria in root nodules to make nutrients for the plant is
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Correctly identify first that the item fixed by bacteria in the root nodules is NITROGEN and then identify the proportion of this gas in the air. Nitrogen comprises 78%, Oxygen 21%, Carbin dioxide 0.03% and rare gases 0.97%
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Question 31 of 50
31. Question
2 pointsWhich one of the following is the last step when separating a mixture of sand and salt?
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Question 32 of 50
32. Question
2 pointsThe diagram below shows a stone being thrown using a catapult.
The form of energy in the rubber band before the stone is released is
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Question 33 of 50
33. Question
2 pointsWhich one of the following is CORRECT about a solar heater? A solar heater changes
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Question 34 of 50
34. Question
2 pointsTall buildings are fitted with sharp pointed metal rods at their tops and connected to the ground. The rods are for
Correct
Lightning normally strikes the highest point in an area. Fixing sharp pointed rods to tall buildings ensures that the lightning strikes the rod and is then conducted by a conductor at the side of the building safely into the ground where it would cause no harm.
Incorrect
Lightning normally strikes the highest point in an area. Fixing sharp pointed rods to tall buildings ensures that the lightning strikes the rod and is then conducted by a conductor at the side of the building safely into the ground where it would cause no harm.
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Question 35 of 50
35. Question
2 pointsWhich one of the following is TRUE about the rainbow? It forms
Correct
A rainbow is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky as multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. The rain droplets represents a medium with a different optical density than the surrounding air. Light waves refract when they cross over the boundary from one medium to another. The different colours refract at different angles, hence forming the rainbow.
Incorrect
A rainbow is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky as multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. The rain droplets represents a medium with a different optical density than the surrounding air. Light waves refract when they cross over the boundary from one medium to another. The different colours refract at different angles, hence forming the rainbow.
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Question 36 of 50
36. Question
2 pointsWhich one of the following energy transformations takes place when a radio that uses cells is operating?
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A radio cell has stored chemical energy. When the radio is turned on, energy flows through the radio wires and circuits as electrical energy to the speaker. In the speaker coils are magnetized and the diaphragm begins to vibrate (kinetic energy) thereby generating sound.
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Question 37 of 50
37. Question
2 pointsWhich one of the following sources of energy DOES NOT contain chemical energy?
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Question 38 of 50
38. Question
2 pointsHeat reaches the feet of a person seated by the side of a fire by
Correct
Conduction is the process by which heat is transmitted in solids, while convection is the process by which heat is transmitted through liquid medium. In radiation, heat is transmitted in gases.
Incorrect
Conduction is the process by which heat is transmitted in solids, while convection is the process by which heat is transmitted through liquid medium. In radiation, heat is transmitted in gases.
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Question 39 of 50
39. Question
2 pointsWhich one of the following DOES NOT pollute the air?
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Question 40 of 50
40. Question
2 pointsThe MAIN reason why it is advisable to spray crops in the direction of the wind is to avoid
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Question 41 of 50
41. Question
2 pointsThe following signs and symptoms were observed in a certain child:
(i) Thin and weak
(ii) Wrinkled face
(iii) Pot bellied
(iv) Hungry and crying a lot
The child was most likely suffering from?
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Incorrect
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Question 42 of 50
42. Question
2 pointsWhich one of the following groups consists only of foodstuffs that protect the body against diseases?
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Protecting the body against diseases is the function of Vitamins. Look for the answer that has all foodstuffs given as those of the vitamins class. Proteins help in growth and body repair while carbohydrates work to provide the body with energy.
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Question 43 of 50
43. Question
2 pointsThe purpose of salt in food preservation is to
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Salt absorbs water from foods by osmosis, making the environment too dry to support harmful mold or bacteria.
Incorrect
Salt absorbs water from foods by osmosis, making the environment too dry to support harmful mold or bacteria.
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Question 44 of 50
44. Question
2 pointsThe most likely reason why some expectant mothers crave for soil is to
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Eating soil by pregnant women is often related to a deficiency in iron, zinc, or another nutrient in the body.
Incorrect
Eating soil by pregnant women is often related to a deficiency in iron, zinc, or another nutrient in the body.
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Question 45 of 50
45. Question
2 pointsWhich one of the following levers when in use has the position of the effort between the load and the fulcrum?
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Question 46 of 50
46. Question
2 pointsA single fixed pulley
Correct
There are three main types of pulleys: fixed, movable, and compound.
A fixed pulley?s wheel and axle stay in one place. eg. a flag pole: When you pull down on the rope, the direction of force is redirected by the pulley, and you raise the flag.
A movable pulley is a pulley that is free to move up and down, and is attached to a ceiling or other object by two lengths of the same rope. eg. construction cranes, modern elevators, and some types of weight lifting machines at the gym.
A compound pulley consists of combinations of fixed and movable pulleys.
Incorrect
There are three main types of pulleys: fixed, movable, and compound.
A fixed pulley?s wheel and axle stay in one place. eg. a flag pole: When you pull down on the rope, the direction of force is redirected by the pulley, and you raise the flag.
A movable pulley is a pulley that is free to move up and down, and is attached to a ceiling or other object by two lengths of the same rope. eg. construction cranes, modern elevators, and some types of weight lifting machines at the gym.
A compound pulley consists of combinations of fixed and movable pulleys.
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Question 47 of 50
47. Question
2 pointsThe diagram below represents a tyre of a vehicle.
The purpose of treads in the vehicle tyre is to
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Question 48 of 50
48. Question
2 pointsThe following activities are carried out when making a beam balance but not in the correct order:
(i) Suspend the arm to find balance point and mark
(ii) Make a base, a stand and the arm
(iii) Fix the stand and the arm to the base
(iv)Suspend tins on both sides of the arm
Which one of the following is the CORRECT order in which the activities are carried out?
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Incorrect
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Question 49 of 50
49. Question
2 pointsWhich one of the following statements is CORRECT about a stone thrown a few metres directly upwards by a passenger in a moving lorry? The stone will fall
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Question 50 of 50
50. Question
2 pointsThe diagram below represents a certain weed
The weed is
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