Constructing an Innovative Animal Waterer
18 Grade 8 Agriculture questions on Constructing an Innovative Animal Waterer, with worked marking schemes. 18 questions are available on this topic in full.
Question 1
6 marksDescribe, in three steps, how a learner would construct and test a simple gravity-fed poultry waterer from a plastic bottle and a shallow dish.
(6 marks)
Marking scheme
Up to 2 marks per correct sequential step (max 6): 1) Fill a clean plastic bottle with water and position it inverted over the shallow dish so its mouth sits just above the dish base. 2) Assemble so water flows out until it covers the mouth, then stops. 3) Test by observing that as chickens drink and the level drops below the mouth, more water is released automatically; check that it does not leak or overflow, and adjust the height if needed.
Question 2
1 markRegular cleaning of an animal waterer is important mainly because it
A. Increases the size of the trough
B. Reduces the number of animals fed
C. Prevents build-up of dirt and disease-causing germs
D. Makes the water taste salty
(1 mark)
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Create a free account to see itQuestion 3
4 marksExplain two reasons why providing clean water through a well-constructed waterer improves the health and productivity of livestock.
(4 marks)
Marking scheme
Any two, each explained (2 marks each): clean water prevents water-borne diseases, keeping animals healthy and reducing deaths; adequate clean water supports digestion, milk/egg production and growth, raising productivity; a well-designed waterer reduces spillage and contamination, ensuring a constant supply so animals do not suffer thirst stress.
Question 4
1 markPlacing a waterer under a shade rather than in direct sunlight helps to
A. Speed up rusting
B. Keep the water cool and reduce algae growth
C. Make the animals thirsty
D. Attract more flies
(1 mark)
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Create a free account to see itQuestion 5
1 markThe main purpose of constructing an animal waterer on a farm is to
A. Measure the animals' weight
B. Shelter the animals from rain
C. Provide clean drinking water to livestock conveniently
D. Feed the animals
(1 mark)
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Create a free account to see itQuestion 6
1 markWhich of the following BEST shows creativity and innovation in constructing an animal waterer?
A. Buying a ready-made trough from a shop
B. Letting animals drink directly from a muddy pond
C. Carrying water to the animals in cupped hands
D. Using a discarded jerrican and a float valve to make a self-filling trough
(1 mark)
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Create a free account to see itQuestion 7
1 markFor a waterer to be considered innovative and appropriate for a small-scale Kenyan farmer, it should be
A. Difficult to clean
B. Made from cheap, locally available materials and easy to use
C. Very expensive and imported
D. Usable by only one animal per week
(1 mark)
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Create a free account to see itQuestion 8
1 markA learner constructs a simple automatic waterer for chickens using a filled inverted bottle placed over a shallow dish so water refills the dish as the birds drink. Which principle makes the water flow out only as it is needed?
A. Air pressure holding water in until the level drops below the bottle mouth
B. Magnetic attraction of the water
C. Electricity from the bottle
D. The chickens pumping the water by pecking
(1 mark)
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Create a free account to see itQuestion 9
1 markA gravity-fed poultry waterer keeps the drinking dish filled by
A. Using air pressure and gravity to release water as the level drops
B. Boiling water into the dish
C. Pumping water electrically
D. Absorbing dew from the air
(1 mark)
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Create a free account to see itQuestion 10
1 markWhich recycled material is MOST suitable for constructing a simple, safe drinking trough for chickens?
A. A clean plastic container cut to size
B. A broken glass bottle
C. A rusty jagged metal sheet
D. A sack of soil
(1 mark)
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Create a free account to see itQuestion 11
1 markWhy should the edges of a home-made metal waterer be smoothed or folded over?
A. To increase water evaporation
B. To prevent injury to the animals
C. To make it rust faster
D. To make it heavier
(1 mark)
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Create a free account to see itQuestion 12
1 markA learner wants to build a simple automatic waterer for the family's chickens using a clean plastic bottle inverted into a shallow dish, so the birds always have water. For the waterer to refill the dish automatically as the birds drink, the design must rely on the principle that:
A. Water flows uphill on its own
B. Air pressure holds water in the bottle until the level drops
C. The bottle must be left completely open at the top
D. Chickens push the bottle to release water
(1 mark)
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Create a free account to see itQuestion 13
4 marksAfter constructing an animal waterer, a learner is asked to evaluate it. State four checks the learner should carry out to judge whether the waterer is well made.
(4 marks)
Marking scheme
Any four (1 mark each): check that it holds water without leaking; that the edges are smooth and safe; that it is stable/does not tip over easily; that it is the right height/size for the target animals; that it is easy to clean and refill; that it is durable and made of affordable materials; that water flows/refills correctly (if automatic).
Question 14
4 marksA farmer notices that the animal waterer keeps getting dirty and the animals sometimes knock it over.
(a) Suggest one improvement to keep the water clean.
(b) Suggest one improvement to make the waterer more stable.
(4 marks)
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Create a free account to see itQuestion 15
1 markWhen testing a newly constructed waterer, the FIRST thing a learner should check is whether it
A. Is the heaviest possible
B. Holds water without leaking
C. Has a lock and key
D. Is painted a bright colour
(1 mark)
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Create a free account to see itQuestion 16
1 markA learner builds an automatic waterer using a float valve that refills the trough as animals drink. The float valve works by
A. Locking the trough at night
B. Filtering out dirt
C. Opening the water inlet when the water level drops
D. Heating the water
(1 mark)
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Create a free account to see itQuestion 17
5 marksA Grade 8 learner plans to construct a simple animal waterer from recycled materials.
(a) List three materials the learner could use.
(b) State two qualities of a good animal waterer.
(5 marks)
Marking scheme
(a) Any three suitable materials (1 mark each): clean plastic container/jerrican/bucket; PVC pipe; used tyre; wire/nails; float valve; wood for a stand. (b) Any two qualities (1 mark each): holds water without leaking; smooth edges/safe for animals; easy to clean; correct height for the animals; durable; made from cheap locally available materials.
Question 18
1 markAn innovation in farm tools is BEST described as
A. Repairing an old tool to look new only
B. Copying a tool exactly without change
C. Buying the most expensive equipment
D. A new or improved way of solving a farm problem
(1 mark)
Marking scheme for this question
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