Year 11 Science lessons

Narrated, animated lessons with hands-on activities and exam practice. Pick a course, or open a course to jump straight to a chapter. Turn your sound on, and use Chrome for the Google voice.

8 courses · 65 chapters

Biology

Year 11 Science (Level 1) 7 chapters · about 1 h 55 min

Genetics

DNA, mutations, meiosis, natural selection, Punnett squares, pedigrees and biotechnology.

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  1. 1The genetic toolkitGenes, alleles, DNA structure, base pairing, Rosalind Franklin, homologous chromosomes and the genetic code.
  2. 2MutationsGenetic variation, mutations, substitutions, deletions and insertions, frameshifts, and genetic disorders.
  3. 3Sexual reproduction and meiosisAsexual vs sexual reproduction, fertilisation, meiosis as a reduction division, crossing over and independent assortment.
  4. 4Population genetics and natural selectionGene pools, allele frequency, migration, natural selection, peppered moths, genetic drift, and the founder and bottleneck effects.
  5. 5Inheritance and Punnett squaresDominant and recessive alleles, genotype and phenotype, Punnett squares, expected vs observed ratios, and test crosses.
  6. 6Sex, pedigrees and sex-linked traitsSex determination, reading pedigree charts, and sex-linked disorders like haemophilia and colour blindness.
  7. 7Biotechnology and DNA sequencingSelective breeding, cloning and transgenesis (for or against), DNA sequencing, and genetic screening in NZ.
Year 11 SCX 11 chapters · about 3 h 5 min

Microbes

Bacteria, fungi and viruses, useful and harmful microbes, antibiotics, immunity and vaccines.

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  1. 1Origins of life and cellsPrebiotic Earth, the Miller–Urey experiment, cell theory, MRS GREN and prokaryotes vs eukaryotes.
  2. 2Bacteria and how they liveCulturing microbes, bacterial structure, binary fission, feeding, excretion and respiration.
  3. 3EnzymesActive sites, the enzyme mechanism, and how temperature and pH affect enzymes.
  4. 4Bacterial growthThe growth curve, ideal conditions, extremophiles and why growth stops.
  5. 5Fungi and virusesRhizopus and yeast, fungal reproduction and feeding, virus structure and replication.
  6. 6Useful microbesFermentation, food making, the gut microbiome, decomposers, sewage, and the nitrogen and carbon cycles.
  7. 7Investigating yeast (AS 92020)A virtual yeast respiration investigation, written up at Achieved, Merit and Excellence.
  8. 8Pathogens and food safetyPathogens and how they spread, food poisoning, abiotic and biotic factors, preservation and cleaning products.
  9. 9Antibiotics and resistanceAntibiotics, how resistance evolves, MRSA and MDR-TB, and comparing chemical defences.
  10. 10The first and second lines of defenceSkin, lysozyme, sebum, blood clotting, phagocytosis, inflammation and cell signalling.
  11. 11Specific immunity and vaccinesAntibodies, clonal expansion, active and passive immunity, vaccines, herd immunity, Pasteur and Koch.

Physics

Year 11 Science 10 chapters · about 2 h 35 min

Physics

Motion, forces, energy and electric circuits.

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  1. 1Speed and distance–time graphsSpeed, v = d/t and reading distance–time graphs.
  2. 2Vectors, velocity and accelerationScalars and vectors, displacement, velocity and a = Δv/Δt.
  3. 3Speed–time graphsGradients for acceleration and areas for distance.
  4. 4Forces and Newton's lawsContact and non-contact forces, Newton's laws and F = ma.
  5. 5Mass, weight, friction and pressureFw = mg, friction, terminal velocity and P = F/A.
  6. 6Energy, work and powerEp = mgh, Ek = ½mv², conservation of energy, work and power.
  7. 7Circuits and chargeConductors, current, voltage, resistance and circuit diagrams.
  8. 8Circuit rules and V = IRSeries and parallel rules and V = IR calculations.
  9. 9Electrical power and changing circuitsP = IV, brightness, battery life and explaining circuit changes.
  10. 10Electric fields and forcesCharges, parallel plates, F = Eq and E = V/d.
Year 11 Science 5 chapters · about 1 h 20 min

Heat

Temperature, conduction, convection and radiation, changes of state and heat calculations.

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  1. 1Temperature vs heatTemperature, heat, kelvin, and how heat flows to thermal equilibrium.
  2. 2Conduction and convectionConduction, conductors vs insulators, convection in kettles, sea and land breezes.
  3. 3Radiation and keeping heat inRadiation, good and poor radiators, thermos flasks, double glazing, chilly bins and hāngī.
  4. 4States of matter and heating curvesParticle theory of state changes, heating and cooling curves, latent heat, boiling vs evaporation.
  5. 5Heat calculationsSpecific heat capacity, Q = mcΔT, Q = mL and power.
Year 11 Science 6 chapters · about 1 h 35 min

Waves

From slinkies to fibre optics: how waves carry energy, reflect, refract and diffract.

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  1. 1What is a wave?Transverse vs longitudinal waves, with a slinky lab.
  2. 2Measuring wavesAmplitude, wavelength, period, frequency, v = fλ and prefixes.
  3. 3The electromagnetic spectrumThe seven EM waves in order, their uses, and photon energy.
  4. 4Reflection and echoesWavefronts and rays, the law of reflection, satellites and echoes.
  5. 5Refraction and total internal reflectionSnell's law, critical angle, TIR and fibre optics in a ray-box lab.
  6. 6DiffractionGaps, barriers, radio over hills and black spots in a ripple tank.
Year 11 Science 6 chapters · about 1 h 35 min

Electricity

Magnets, generators, the national grid and where our electricity comes from.

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  1. 1Magnetic fieldsField lines around magnets, wires and solenoids, with a compass plotter.
  2. 2ElectromagnetsB = KI/d, right-hand rules, making and breaking magnets, and an electromagnet lab.
  3. 3Generators and ACAC vs DC, Fleming's right-hand rule, Lenz's law and a generator simulator.
  4. 4Transformers and the national gridStep-up and step-down transformers, efficiency, and a grid simulator.
  5. 5Nuclear powerFusion, fission, chain reactions, nuclear equations and radioactive waste.
  6. 6Renewable electricityHydro, wind, geothermal and solar: how each one makes electricity.

Chemistry

Year 11 Science 11 chapters · about 2 h 50 min

Chemistry

Equations and moles, reactions in solution, rates of reaction and organic chemistry.

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  1. 1Ionic formulas and namesCharges, polyatomic ions, counting atoms and naming compounds.
  2. 2Word and balanced equationsNeutralisation word equations and balancing with an equation balancer.
  3. 3The moleAvogadro's number, molar mass and n = m/M.
  4. 4Mole ratios and limiting reactantsUsing balanced equations to find amounts, and which reactant runs out.
  5. 5Acids, bases and solutionspH, H⁺ and OH⁻, neutralisation, solution words and dissolving.
  6. 6Precipitation reactionsSolubility rules, predicting precipitates and spectator ions.
  7. 7Displacement reactionsThe activity series and the pull on electrons.
  8. 8Collision theory and ratesCollisions, activation energy, the three factors and catalysts.
  9. 9Rate graphs and experimentsReading rate graphs, conservation of mass, errors, accuracy and precision.
  10. 10Naming organic compoundsAlkanes, alkenes, haloalkanes and alcohols up to 8 carbons.
  11. 11Organic reactionsAddition and substitution reactions and the bromine water test.
Year 11 SCX 9 chapters · about 2 h 15 min

SCX Chemistry

Redox, fuels and quantitative chemistry.

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  1. 1Oxidation numbersThe oxidation-number rules and a step-by-step calculator.
  2. 2Oxidation, reduction, oxidants and reductantsOIL RIG, oxidation-state changes and justification sentences.
  3. 3Half equations and overall redox equationsBalancing half equations and combining them.
  4. 4Redox observationsColour changes of common oxidants and reductants and writing observations.
  5. 5Fuels and combustionComplete vs incomplete combustion and its environmental impact.
  6. 6Specific energy and comparing fuelsq = mcΔT, e = q/m and evaluating ethanol vs propane.
  7. 7Moles, particles and stoichiometryn = m/M, Avogadro's number and mass calculations from equations.
  8. 8Percentage composition and formulasPercentage composition, empirical and molecular formulas.
  9. 9Gravimetry, hydrated salts and titrationsConstant mass, water of crystallisation, n = cV and titrations.

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