SECTION A SCIENCE BECE 2024
1. C. A rainbow
2. A. Food poisoning
3. A. Loudspeakers, compass, alarms
4. D. Third law
5. A. Conduction
6. C. I, II, and III
7. C. Incomplete metamorphosis
8. B. Milk of magnesia
9. B. 60 W
10. D. I, II, and III only
11. B. Filtering
12. D. Uranium
13. C. Environmental control
14. B. Flutes
15. D. Reduced carbon emissions
16. D. Chemical to heat energy
17. A. I and II only
18. A. Chlorine
19. C. Crumpling of paper
20. Diffusion
21. Chloroplast
22. B. I and II only (The carbon cycle and the water cycle both directly involve the sun.)
23. A. Bend towards the surface
24. B. Atom
25. D. Mouth
26. B. I and III only (Decreased growth).
27. C. Do not react with atmospheric oxygen
28. B. Contain free electrons which
29. C. Carbon
30. A. Increase the brigntness in the room
31. B. Increase the amount of electricity consumed
32. D. Baking soda
33. D. Raised bed
34. C. Oxygen
35. B. Wind and biogas
36. C. Zinc
37. B. Soya bean meal
38. D. Measuring cylinder
39. C. 1, 2, and 3
40. B. Yellowing of leaves
1. C. A rainbow
2. A. Food poisoning
3. A. Loudspeakers, compass, alarms
4. D. Third law
5. A. Conduction
6. C. I, II, and III
7. C. Incomplete metamorphosis
8. B. Milk of magnesia
9. B. 60 W
10. D. I, II, and III only
11. B. Filtering
12. D. Uranium
13. C. Environmental control
14. B. Flutes
15. D. Reduced carbon emissions
16. D. Chemical to heat energy
17. A. I and II only
18. A. Chlorine
19. C. Crumpling of paper
20. Diffusion
21. Chloroplast
22. B. I and II only (The carbon cycle and the water cycle both directly involve the sun.)
23. A. Bend towards the surface
24. B. Atom
25. D. Mouth
26. B. I and III only (Decreased growth).
27. C. Do not react with atmospheric oxygen
28. B. Contain free electrons which
29. C. Carbon
30. A. Increase the brigntness in the room
31. B. Increase the amount of electricity consumed
32. D. Baking soda
33. D. Raised bed
34. C. Oxygen
35. B. Wind and biogas
36. C. Zinc
37. B. Soya bean meal
38. D. Measuring cylinder
39. C. 1, 2, and 3
40. B. Yellowing of leaves
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1. a) The term "Environment" refers to the surroundings in which we live, including the air, water, land, and living things like plants and animals. It's the ecosystem that supports life on Earth.
b)
1. Industrial waste: Factories and industries release chemicals and waste into water bodies, harming aquatic life and human health.
2. Sewage and wastewater: Untreated sewage and wastewater from homes and businesses enter water bodies, contaminating them with bacteria, viruses, and other pollutants.
3. Agricultural runoff: Fertilizers, pesticides, and manure from farms can enter water bodies, causing harmful algal blooms and dead zones.
4. Litter and trash: Improperly disposed of trash, like plastic bags and bottles, can enter water bodies, harming aquatic life and clogging waterways.
c
1. Implement proper waste management: Ensure that industrial, agricultural, and domestic waste is properly treated and disposed of before entering water bodies.
2. Promote sustainable agriculture: Encourage farmers to adopt eco-friendly practices like organic farming, reducing fertilizer and pesticide use.
3. Organize community clean-ups: Regularly clean up litter and trash along water bodies and promote recycling.
4. Support water conservation: Encourage responsible water use, fix leaks, and install rainwater harvesting systems to reduce wastewater generation.
Let's take action and protect our environment!
b)
1. Industrial waste: Factories and industries release chemicals and waste into water bodies, harming aquatic life and human health.
2. Sewage and wastewater: Untreated sewage and wastewater from homes and businesses enter water bodies, contaminating them with bacteria, viruses, and other pollutants.
3. Agricultural runoff: Fertilizers, pesticides, and manure from farms can enter water bodies, causing harmful algal blooms and dead zones.
4. Litter and trash: Improperly disposed of trash, like plastic bags and bottles, can enter water bodies, harming aquatic life and clogging waterways.
c
1. Implement proper waste management: Ensure that industrial, agricultural, and domestic waste is properly treated and disposed of before entering water bodies.
2. Promote sustainable agriculture: Encourage farmers to adopt eco-friendly practices like organic farming, reducing fertilizer and pesticide use.
3. Organize community clean-ups: Regularly clean up litter and trash along water bodies and promote recycling.
4. Support water conservation: Encourage responsible water use, fix leaks, and install rainwater harvesting systems to reduce wastewater generation.
Let's take action and protect our environment!
5a.(i) The term "Technology" refers to the application of scientific knowledge for practical purposes, especially in industry. It encompasses the tools, techniques, methods, and processes used to create products, services, and systems that meet human needs and improve the quality of life.
5a.(ii)
1. Portable Power Bank and Solar Charger
2. Water Purification Tablets or Filter
3. Smartphone with GPS and Offline Maps
4. Insect Repellent Wristband or Portable Mosquito Repeller
1. Portable Power Bank and Solar Charger
2. Water Purification Tablets or Filter
3. Smartphone with GPS and Offline Maps
4. Insect Repellent Wristband or Portable Mosquito Repeller