In a certain investigation pupils used a straight pipe to observe a candle flame. They then bent the pipe and observed again. Which aspect of...

In a certain investigation pupils used a straight pipe to observe a candle flame. They then bent the pipe and observed again. Which aspect of light was being investigated?
A. Formation of shadows.
B. Uses of light.
C. Sources of light.
D. How light travels.

---

The correct answer is D. How light travels.

---

sharon kalunda answered the question on July 30, 2019 at 07:54

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• Which one of the following pairs of materials will pollute soil? (Solved)
  

  Which one of the following pairs of materials will pollute soil?
  A. Saw dust and artificial fertilizer.
  B. Plastics and artificial fertilizer.
  C. Wood ash and saw dust.
  D. Plastics and iron filings.

  Date posted: July 30, 2019 .    Answers (1)

• In an activity to investigate mixing of liquids, liquid P mixed with liquid Q. Liquid R did not mix with Liquid P and Q. Liquid... (Solved)
  

  In an activity to investigate mixing of liquids, liquid P mixed with liquid Q. Liquid R did not mix with Liquid P and Q. Liquid R mixed with cooking oil. Which one of the following correctly represents liquids P, Q and R?
  P -------------- Q -------------- R
  A. Water --------- Milk - -----------Kerosene.
  B. Kerosene ------- Water----------- - Milk.
  C. Milk ----------- Kerosene ---------- Water.
  D. Water ----------- Kerosene ---------- Milk.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following statements describes soft water? Soft water (Solved)
  

  Which of the following statements describes soft water? Soft water
  A. Is clear and clean
  B. Requires a lot of soap for washing
  C. Is safe for drinking
  D. Is water that has been boiled.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following only consists of energy giving foods? (Solved)
  

  Which of the following only consists of energy giving foods?
  A. Lemon and honey.
  B. Butter and coconut.
  C. Eggs and fish.
  D. Bread and pineapple.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following groups of products are correctly classified according to the farm animals producing them (Solved)
  

  Which of the following groups of products are correctly classified according to the farm animals producing them.
  Cattle ------- Sheep ------- Goats
  A. Dairy --------- Beef -------- Wool.
  B. Beef ---------- Dairy -------- Wool.
  C. Mutton -------- Wool --------- Dairy.
  D. Beef ---------- Mutton -------- Dairy.

  Date posted: July 30, 2019 .    Answers (1)

• The main reason why murram is placed on roads is to (Solved)
  

  The main reason why murram is placed on roads is to
  A. absorb rain water
  B. make the roads last longer
  C. increase grip with tyres
  D. make the roads more attractive.

  Date posted: July 30, 2019 .    Answers (1)

• The following are reasons for fitting a tap near the bottom of a tank except (Solved)
  

  The following are reasons for fitting a tap near the bottom of a tank except
  A. making gravitational force to act on water
  B. making water to flow faster
  C. to increase pressure
  D. to let all the water out.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following groups of objects consists of only objects that would sink in water? (Solved)
  

  Which of the following groups of objects consists of only objects that would sink in water?
  A. Piece of chalk, steel needle, cork.
  B. Nail, piece of glass, stone.
  C. Bottle top, nail, cork.
  D. Piece of chalk, plastic bottle, polythene bag.

  Date posted: July 30, 2019 .    Answers (1)

• In which of the following are the characteristics of solids and liquids correctly matched? (Solved)
  

  In which of the following are the characteristics of solids and liquids correctly matched?
  Solids ---------------- Liquids
  A. Definite volume -------- Definite shape.
  B. No definite volume ----- Definite shape.
  C. Definite volume --------- No definite shape.
  D. No definite shape -------- Definite volume.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following pairs of livestock parasite control methods can control liver flukes? (Solved)
  

  Which of the following pairs of livestock parasite control methods can control liver flukes?
  A. Rotational grazing and deworming.
  B. Dipping and spraying of animals.
  C. Rotational grazing and spraying of animals.
  D. Deworming and dipping.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following parts of the human breathing system are both involved in cleaning, warming and moistening air? (Solved)
  

  Which of the following parts of the human breathing system are both involved in cleaning, warming and moistening air?
  A. Diaphragm and trachea.
  B. Lungs and diaphragm.
  C. Nose and lungs.
  D. Trachea and nose.

  Date posted: July 30, 2019 .    Answers (1)

• Excessive use of herbicides and pesticides affect the soil by reducing the (Solved)
  

  Excessive use of herbicides and pesticides affect the soil by reducing the
  A. Number of animals in the soil
  B. Nutrients in the soil
  C. Humus content in the soil
  D. Water retention in the soil.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following statements about HIV infected persons is correct? Infected persons (Solved)
  

  Which of the following statements about HIV infected persons is correct? Infected persons
  A. Can only be taken care of by health workers
  B. Need to visit hospitals for cure
  C. Should be provided with a balanced diet
  D. Should be discouraged from playing with others.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following uses of water are recreational only? (Solved)
  

  Which of the following uses of water are recreational only?
  A. Transport, cleaning, swimming.
  B. Cleaning, boat racing, mixing chemicals.
  C. Swimming, fishing, boat racing.
  D. Fishing, transport, mixing chemicals.

  Date posted: July 30, 2019 .    Answers (1)

• Bilharzia can be prevented by (Solved)
  

  Bilharzia can be prevented by
  A. Boiling water before drinking
  B. Wearing gumboots when walking in stagnant water
  C. Draining stagnant water from around the homestead
  D. Covering latrines after use.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following groups of foods would provide nutrients suitable for a child suffering from kwashiorkor? (Solved)
  

  Which of the following groups of foods would provide nutrients suitable for a child suffering from kwashiorkor?
  A. Sorghum, carrots, sweet potatoes.
  B. Oranges, Irish potatoes, sugar cane.
  C. Beef, peas, milk.
  D. Mangoes, arrow roots, spinach.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following groups of animal feeds mainly provides a diet of proteins, carbohydrates and Fats respectively? (Solved)
  

  Which of the following groups of animal feeds mainly provides a diet of proteins, carbohydrates and Fats respectively?
  A. Desmodium, clover, sweet potato vines.
  B. Lucem, maize stalks, oats.
  C. Napier grass, sweet potato vines, maize stalks.
  D. Lucem, desmodium, napier grass.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following food chains is correct? (Solved)
  

  Which of the following food chains is correct?
  A. Grass —> grasshopper —> goat.
  B. Maize —> mice —> snake.
  C. Sunflower —> butterfly —> rabbit.
  D. Grass —> antelope —> rhino.

  Date posted: July 30, 2019 .    Answers (1)

• Which of the following groups of food crops is correctly classified into cereals, legumes and fruits? (Solved)
  

  Which of the following groups of food crops is correctly classified into cereals, legumes and fruits? Cereals----------- Legumes------------- Fruit
  A. Peas-------------- Millet------------- Orange.
  B. Apple-------------- Green grams-------- Beans.
  C. Rice --------------Ground nuts---------- Pawpaw.
  D. Wheat------------- Banana--------------- Sorghum.

  Date posted: July 30, 2019 .    Answers (1)

• Which pair of plants stores food in the roots? (Solved)
  

  Which pair of plants stores food in the roots?
  A. Sweet potato and carrot.
  B. Irish potato and arrow root.
  C. Carrot and Irish potato.
  D. Onions and cassava.

  Date posted: July 30, 2019 .    Answers (1)