PlantsEnergy from lightFlowers - male and female partsPlant reproductionInsect pollinationSeed dispersalSeed germinationLife cycle of flowering plantsStates of matterEvaporationCondensationWater vapour in the airThe boiling point of waterThe melting point of iceEvaporation of solutionsLightShadow formationShadow sizesChanges in shadows throughout the dayMeasuring light intensityOpaque and transparent materialsLight and the eyesReflection and visionDirection of lightThe Earth and beyondApparent movement of the sunThe turning EarthThe Earth's orbitFamous astronomersGlossary.