DAMANKO D.A JHS ‘A’ MOCK EXAMINATION INTEGRETED SCIENCE SECTION A Answer all questions 1. Which of the following is not a unit of measurement? a) Meter b) Kilogram c) Celsius d) Liter 2. Which layer of the Earth's atmosphere is closest to the planet's surface? a) Troposphere b) Stratosphere c) Mesosphere d) Thermosphere 3. Which of the following is an example of a non-renewable resource? a) Solar energy b) Wind energy c) Fossil fuels d) Geothermal energy 4. Which component of soil is responsible for holding water and nutrients? a) Sand b) Silt c) Clay d) Loam 5. Which of the following substances is a strong acid? a) Vinegar b) Lemon juice c) Hydrochloric acid d) Milk 6. Which of the following is a base according to the Arrhenius definition? a) Hydrochloric acid b) Baking soda c) Vinegar d) Lemon juice 7. What happens when an acid reacts with a base? a) Neutralization b) Oxidation c) Reduction d) Combustion 8. Which of the following is an example of a heterogeneous mixture? a) Saltwater b) Milk c) Air d) Vinegar 9. Which type of heat transfer occurs through direct contact between objects? a) Conduction b) Convection c) Radiation d) None of the above 10. In photosynthesis plants convert sunlight into: a) Oxygen and carbon dioxide b) Glucose and oxygen c) Water and carbon dioxide d) Starch and hydrogen 11. Which system in the human body is responsible for pumping blood? a) Respiratory system b) Nervous system c) Circulatory system d) Digestive system 12. Which of the following is an abiotic factor in an ecosystem? a) Plants b) Animals c) Sunlight d) Bacteria 13. Which of the following is an example of a renewable energy source? a) Natural gas b) Coal c) Nuclear power d) Solar power 14. Which of the following is a simple machine? a) Screwdriver b) Fork c) Knife d) Pliers 15. Which process do ruminants use to digest plant material? a) Fermentation b) Photosynthesis c) Respiration d) Diffusion 16. What is the purpose of dentition? a) To help with breathing b) To help with digestion c) To help with reproduction d) To help with locomotion 17. Which of the following elements is a metal? a) Oxygen b) Nitrogen c) Carbon d) Iron 18. What is the movement of particles from an area of high concentration to an area of low concentration called? a) Diffusion b) Osmosis c) Active transport d) Endocytosis 19. Which of the following is a non-communicable disease? a) Influenza b) Tuberculosis c) Diabetes d) Malaria 20. What is the process of preventing soil erosion and degradation called? a) Soil erosion b) Soil conservation c) Soil degradation d) Soil remediation 21. Which unit is used to measure length? a) Ampere b) Kelvin c) Meter d) Mole 22. Which layer of the Earth is responsible for producing earthquakes? a) Lithosphere b) Asthenosphere c) Mesosphere d) Troposphere 23. What is the primary function of the ozone layer in the Earth's atmosphere? a) Absorbing ultraviolet radiation b) Producing oxygen c) Regulating temperature d) Facilitating photosynthesis 24. Which of the following is a renewable resource? a) Natural gas b) Coal c) Uranium d) Solar energy 25. Which of the following is not a component of soil? a) Air b) Water c) Rocks d) Bacteria 26. Which of the following is a weak acid? a) Hydrochloric acid b) Sulphuric acid c) Acetic acid d) Nitric acid 27. What is the pH value of a neutral solution? a) 0 b) 7 c) 14 d) None of the above 28. What property determines whether a substance is an acid or a base? a) Density b) Melting point c) pH d) Solubility 29. Which of the following is an example of a homogeneous mixture? a) Sand and water b) Oil and vinegar c) Salt and pepper d) Sugar and water 30. Which type of heat transfer occurs through the movement of fluids? a) Conduction b) Convection c) Radiation d) None of the above 31. What is the primary pigment responsible for capturing sunlight in photosynthesis? a) Chlorophyll a b) Chlorophyll b c) Carotenoids d) Xanthophylls 32. Which system in the human body is responsible for exchanging gases with the environment? a) Respiratory system b) Nervous system c) Circulatory system d) Digestive system 33. Which of the following is an example of a biotic factor in an ecosystem? a) Sunlight b) Rocks c) Trees d) Temperature 34. Which of the following is a non-renewable energy source? a) Wind power b) Solar power c) Natural gas d) Biomass 35. Which of the following is not a simple machine? a) Lever b) Pulley c) Wheel and axle d) Gear 36. What is the process of converting organic matter into methane gas called? a) Respiration b) Fermentation c) Photosynthesis d) Combustion 37. What is the function of molars in the dentition of animals? a) Cutting and tearing food b) Grinding and crushing food c) Storing food d) None of the above 38. Which of the following elements is a non-metal? a) Sodium b) Aluminium c) Carbon d) Calcium 39. What is the movement of water molecules across a semi-permeable membrane called? a) Diffusion b) Osmosis c) Active transport d) Exocytosis 40. Which of the following is a communicable disease? a) Hypertension b) Diabetes c) Measles d) Asthma