Summary

• Description:

  The PDF document comprises 2025 Integrated Science Paper 1 KJSEA Past Paper with Answers and Marking Scheme. The marking scheme is in a different document.

  It was a Kenya Junior School Education Assessment (KJSEA) Integrated Science Paper 1 examination administered in 2025.

  • Duration: 2 Hours
  • Total Marks: 70
  • Number of Questions: 40 (Questions 1–40)
  • Structure: Section A (30 marks) and Section B (40 marks)

  Paper structure:

  • Section A: Consisted of 30 multiple choice questions testing foundational scientific knowledge and interpretation of diagrams.
  • Section B: Contained structured questions requiring explanations, identification of scientific processes, interpretation of diagrams, and application of scientific principles.

  It covered the following topics:

  • First aid and safety measures in handling injuries and emergencies
  • Measurement of physical quantities using scientific instruments
  • Properties and uses of metals and materials
  • Structure of atoms and subatomic particles
  • Acids, bases, and properties of substances
  • Formation of compounds and chemical combinations
  • Properties of solids and mixtures
  • Physical and chemical changes in everyday life
  • The fire triangle and components required for combustion
  • Human reproductive system and implantation
  • Functions of the human skin and body systems
  • Plant and animal cells and their components
  • Osmosis and movement of substances across membranes
  • Control of malaria and environmental health practices
  • Photosynthesis and conditions required for plant growth
  • Animal feeding habits and dentition
  • Pollination and characteristics of insect-pollinated flowers
  • Symbiotic relationships between organisms
  • Human digestive system and physiological processes
  • Electric circuits and arrangement of cells and bulbs
  • Magnetism and magnetic interactions
  • Energy transformations in solar-powered devices
  • Pressure in solids and liquids
  • Reflection of light and concave mirrors
  • Wave properties including amplitude, wavelength, and frequency
  • SI units and measurement in science
  • Separation of mixtures such as salt and water
  • Chemical symbols of elements
  • States of matter and changes of state
  • Autotrophic nutrition and photosynthesis
  • Food chains and food webs in ecosystems
  • Human urinary system and excretion
  • Simple electric circuits and electrical components
  • Generation and types of waves using a rope
  • Factors affecting pressure in liquids
• File Size:

  6.42 MB
• Length:

  13 pages
• Category:

  KJSEA Past Papers
• Level:

  Grade 9
• Subject:

  INTEGRATED SCIENCE
• Posted By:

  Caleb_Peter

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