OCR 21st Century

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These files are matched to the 2011 OCR 21st Century Science A specifications. Your account will enable you to download these PowerPoints AND any other new files for the next 12 months!

Powerpoints for the following units:

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Biology Chemistry Physics


B1 You and your genes

Genes, chromosomes and DNA, how genes work, the role of DNA, variation, inherited and environmental forms of variation, sexual reproduction, how sex is determined, definitions of words like recessive, dominant, heterozygous and homozygous, the development of sexual organs, monohybrid cross diagrams and punnett squares, determining eye colour and other inherited characteristics, inherited diseases such as cystic fibrosis and Huntingdon's disease, family pedigree charts, genetic testing, the ethics of genetic testing, embryo selection, cloning plants, cloning animals, identical twins, stem cell research.

32 slides

B2 Keeping Healthy

This slideshow covers the "Keeping Healthy" module from the 2012 GCSE OCR 21st Century unit and includes: microbes, disease, bacteria growth, producing antibodies, specific antibodies, vaccinations, antimicrobials, fungi, how bacteria become immune, MRSA and other superbugs, researching new medicines, placebos, double circulation, the circulatory system, blood vessels, measuring blood pressure, heart disease, high blood pressure, heart disease and lifestyle, drugs, homeostasis, maintaining body temperature, controlling water content, how water content is controlled using hormones, negative feedback.

36 slides

B3 Life on Earth

Use this slideshow to help you teach the B3 module from the 2011 OCR 21st Century course! It covers: definition of a species, competition between species, adaptation to the environment, how the sun's energy enters a food chain through photosynthesis, food chains, food webs, how food webs are affected by a change in population, energy flow and efficiency in a food chain, extinct species, factors that can cause extinction, recycling living organisms, the carbon cycle, decomposers, the nitrogen cycle, measuring environmental changes, pollution indicators, the development of life on Earth, mutations in DNA, natural selection, selective breeding, evolution, evidence for evolution, sharing DNA with other species, Darwin's views compared to those of Lamarck and Weisman, biodiversity, classifying species, protecting endangered species, sustainable development, monoculture crops, recycling and using less materials.

49 slides

B4 The Processes of Life

This slideshow covers: photosynthesis and respiration introductions, enzymes in nature, how enzymes work and the active site, how enzymes are denatured, photosynthesis equations and products, uses for glucose, plant cells, nutrients, diffusion, osmosis, active transport, diffusion and active transport in plants, limiting factors, fieldwork techniques, energy from respiration, aerobic and anaerobic respiration, making ethanol, the structure of bacteria, respiration in plant and animal cells, using anaerobic respiration.

36 slides

B5 Growth and Development

This slideshow covers: cell specialisation, cells, tissues and organs, fertilisation, embryos, adult stem cells, plant growth and meristems, cloning plants, plant hormones, mitosis and meiosis, DNA, making proteins, stem cell research, cloning animals.

25 slides

B6 Brain and Mind

This slideshow covers the Brain and Mind unit, including: the nervous system, nervous reactions, simple reflexes, the iris reflex, reflex actions in animals, hormonal responses, conscious actions, reflex actions, types of neuron, the Central Nervous System and the Peripheral Nervous System, synapses, drugs and how they affect the nervous system, the cerebral cortex, studying the brain, Pavlov's dog and conditioned reflexes, the development of human brains, learning, memory techniques, using models to explain memory.

27 slides

B7 Further Biology

This slideshow covers the triple science B7 unit from the OCR 21st Century course. It includes: the skeletal system, joint movement, the role of cartilage and ligaments, medical history assessments, body-mass index, common injuries, treating a sprained ankle, the circulatory system, the four components of blood, how the heart works, double circulation, capillaries and capillary tissue, body temperature, how our body temperature stays constant, what our body does when we are cold, diabetes and how it is treated, diabetes and obesity, ecosystems, stable ecosystems, how humans can impact an ecosystem, accumulation of pesticides in a food chain, eutrophication, removing biomass from an ecosystem, sustainable development, crude oil, using bacteria, genetic modification and using it to make insulin, genetic testing and how it works, nanotechnology, stem cell research, biomedical engineering.

49 slides


C1 Air Quality

The composition of our atmosphere, constituents of air, the evolution of our atmosphere and the role of volcanoes and plants, carbon dioxide in the atmosphere and how it is changing, pollution, nitrogen monoxide and dioxide, carbon monoxide, sulfur dioxide, fuels, burning hydrocarbons, using oxygen in welding torches, conservation of mass in reactions, incomplete combustion, removing pollution, removing sulfur, wet scrubbing, reducing pollution from vehicles, using alternative fuels.

25 slides

C2 Material Choices

This slideshow covers the 2011 OCR 21st Century C2 module, including: properties of materials including plastics, nylon and rubber, using different natural materials, drawing chemical formulae, simple chemical reactions, hydrocarbons and crude oil, fractional distillation, forces between molecules, polymers, uses of addition polymers, structure of plastics, modifying plastics, nanotechnology, how nanoparticles are formed, examples of nanotechnology in sport and medicine, nanoscience and health implications.

28 slides

C3 Chemicals in our Lives

This unit covers: the structure of the Earth, movement of the crust, earthquake and volcano formation, magnetic patterns in sea floor spreading, continental drift, rocks, how rocks are formed, studying sedimentary rocks, salt, uses for salt, how salt is mined and extracted, government agencies, historical uses for alkalis, neutralisation reactions, making alkalis, reactions of acids with metal carbonates and metal hydroxides, using chlorine in drinking water, electrolysis of salt water and its products, harmful chemicals, PVC, life cycle assessments.

27 slides

C4 Chemical Patterns

This slideshow covers the 2011 OCR 21st Century course on Chemical Patterns, including: introduction to the Periodic Table, groups and periods, how the table was developed by scientists such as Newlands and Mendeleev, the alkali metals and their properties, explaining the reactivity of group 1, hazard signs, the halogens and their reactions, properties of the halogens, displacement reactions, balancing equations, atomic structure, mass and atomic number, flame tests, spectroscopy, electron structure, ions, dissolving ionic substances, balancing ions.

44 slides

C5 Chemicals of the Natural Environment

This module covers the 2011 C5 unit, including: the structure of the Earth, the Earth's atmosphere and its composition, intermolecular forces and how they affect boiling points, chemical structures of molecules in the air, different ways of drawing molecules, the hydrosphere, ionic lattices, dissolving ions, balancing ions, precipitation reactions, solubility rules, testing for different ions, giant covalent structures, composition of the Earth's crust, extracting metals, reactivity and using carbon to extract metals, relative formula mass, percentage mass, amount of metals in compounds, electrolysis, extracting aluminium, metallic structure.

45 slides

C6 Chemical Synthesis

This unit covers the C6 module of the 2011 21st Century course, including: uses for chemical synthesis, balancing ions, chemical formulae of different compounds, hazard signs, acids and alkalis, the pH scale, different indicators, balancing equations, adding acids to metals, metal oxides, metal hydroxides and metal carbonates and their word equations, neutralisation, making different salts, endothermic and exothermic reactions, drawing energy level diagrams, different synthesis techniques, calculating the mass of a product, percentage yield, titration, rates of reaction and how to measure them, collision theory, catalysts.

49 slides

C7 Further Chemistry

Use this slideshow to help you teach the C7 Further Chemistry unit. It covers: the basics of the chemical industry, green chemistry, relative formula mass, calculating the mass of a product, exothermic and endothermic reactions, energy level diagrams, alkanes, general formulae for alkanes, burning alkanes, alcohols and their functional group, physical properties of alcohols, what happens when alcohols are burned, uses for ethanol, using enzymes to make ethanol, making ethanol through cracking, using distillation to purify alcohol, carboxylic acids and their functional group, esters, how to make esters, healthy and unhealthy oils, using bond energies to calculate energy changes, reversible reactions, making ammonia, the Haber Process and its economics, nitrogen fixing, eutrophication, chromatography, thin layer chromatography, Rf values, gas chromatography, calculating concentrations, standard solutions, titration and its calculations, uncertainty.

63 slides


P1 The Earth in the Universe

The eight planets in our solar system and their relatives positions and orbits, asteroids, comets, summary of the solar system, relative sizes, ages and distances of the sun compared to the Milky Way and the universe, how stars are formed, observing the universe, the light year, relative distances of nearby galaxies, measuring distances in space using brightness and parallax, problems in measuring these distances, the size of the Earth compared to stars, how the universe began, evidence for the Big Bang theory, red shift explained, Hubble's Law, the end of the universe, evidence for the age of the Earth, continental drift, tectonic theory, forming mountains, movement of the crust, sea floor spreading, magnetic reversal patterns, plate movements, the structure of the Earth, using seismic waves to investigate the Earth's structure, waves, transverse and longitudinal waves, P waves and S waves, wave speed, amplitude, frequency and wavelength of waves.

65 slides

P2 Radiation and Life

This file covers the "Radiation and life" unit (P2) from the 2011 OCR 21st Century syllabus and includes: the basics of radiation, light as photons, the electromagnetic spectrum, high and low energy photons, intensity and what affects it, ionisation, mobile phones and their dangers, uses of microwaves, how microwaves warm up food, radioactivity, the dangers of UV, ozone, the ozone layer, suncream, absorbing x rays, global warming, principal frequencies, the Greenhouse Effect, future temperature predictions due to global warming, the possible effects of global warming, the carbon cycle, balancing carbon dioxide levels, using radio waves and microwaves in communication, analogue and digital signals, transmitting information using light and EM waves as carriers, storing digital signals, the "byte" and its definition.

35 slides

P3 Sustainable Energy

Use this slideshow to help you teach sustainable energy, including: consumption of fuels, definition of a fuel, renewable and non-renewable fuels, pollution, using electricity, calculating power, the cost of electricity, reading electricity meters, different types of energy, energy changes in different devices, efficiency, Sankey diagrams, how generators work, using fuels in power stations, efficiency of power stations, nuclear power stations, ionisation, dangers of radioactive waste, radioactive contamination, turning generators directly such as in wind turbines and hydroelectric schemes, the National Grid, choosing the right power station, meeting demand, solar power, geothermal power, renewable and non-renewable fuels compared, how supply of different fuels has changed.

43 slides

P4 Explaining Motion

This slideshow covers: calculating speed, distance and displacement, distance-time graphs, speed and velocity, calculating acceleration, velocity-time graphs, forces, paired forces, free body force diagrams, action and reaction, balanced and unbalanced forces, resultant force, momentum, safety features, terminal velocity, kinetic energy, gravitational potential energy, work done, stopping distances, energy changes, dropping objects and calculating their speed.

55 slides

P5 Electric Circuits

This slideshow covers: static electricity, electric current, understanding electric circuits, circuit symbols, electrical power, resistance and how to calculate it, using the heating effect of resistance, LDRs and thermistors, resistors in series and parallel, current and voltage in series and parallel circuits, electromagnetic induction, transformers, AC generators, AC and DC, the motor effect, using motors.

56 slides

P6 Radioactive Materials

This slideshow covers: the structure of the atom, radioactivity, background radiation, the Rutherford Scattering Experiment, the strong force, nuclear fusion in stars, isotopes, types of radiation, blocking radiation, changes in mass and proton number, radioactive decay, half life, ionisation, using radioactivity in tracers and medicine, exposure to radiation and how to monitor it, nuclear fission, chain reactions, controlling nuclear power stations, disposing of radioactive waste.

28 slides

P7 Further Physics

Use this slideshow to help you teach the OCR 21st Century Further Physics unit. It covers: the solar system, orbits and spins, the apparent movement of stars, solar days and sidereal days, the orbit of the moon, phases of the moon, solar and lunar eclipses, viewing stars and planets, angles of declination, refraction of light through different media, converging and diverging lenses, ray diagrams, using lenses in telescopes, using concave mirrors, using mirrors in telescopes, magnification, diffraction, aperture width in telescopes, spectra, parallax, luminosity, measuring distance to stars using their brightness, cepheid variable stars, the Curtis-Shapley debate, Hubble's Law and recession velocity, the Hubble Constant, frequency and energy output of stars, absorption and emission spectra and how they are caused, particle motion in gases and how it explains pressure, the relationship between pressure, volume and temperature in gases, the life cycle of stars, nebulae, main sequence stars, energy-mass equivalence, the structure of our sun, the Hertzsprung-Russell diagram, red giants, red supergiants, supernovae, black holes, observing the universe, using computers to control telescopes, international collaboration in space and its advantages, impact of building observatories.

105 slides