- The nuclear structure of atoms
About the structure of the nucleus of atoms, protons, neutrons and electrons, isotopes and mean relative atomic mass.
About radioactivity, alpha, beta and gamma radiation, radioactive decay, and natural radioactivity.
- Radioactive decay and half-life
About radioactive decay and half-life, with some worked examples
- Ionizing radiation, health and safety
- Carbon and other ways of dating
About ways of dating things, including carbon, rubidium-strontium, potassium-argon and uranium-lead.
- Uses of radioactivity
- Nuclear fission
- Electrolysis About electrolysis and its uses
- Atomic weight and the mole
About Dalton’s Atomic Theory, the history of atomic weight, Avogadro’s Constant, the masses of the reactants in a chemical reaction, and the mole.
- An introduction to Organic Chemistry
About carbon, carbon chains and rings, organic and inorganic chemicals, the alkanes, alkenes and alkynes, homologous series, petroleum and petroleum gases, leaded and unleaded petrol, cracking, and polymerisation.
- Atmospheric pollution
A guide to acid rain, greenhouse gases and the ozone layer
An introduction to catalysis and enzymes.
- Calcium carbonate and the lime cycle
About calcium carbonate, limestone, marble, chalk and calcite, their chemistry, lime and its uses, caves and stalagtites, and hard and soft water and water treatment.
- Oxidation and reduction
About oxidation and reduction, redox reactions and explosives
- Atmospheric gases
A list of the gases present in the air and a description of some of their properties.
- The chemical elements
- Metals and alloys
A description of some common metals and their alloys
- David and Goliath
A story set in the early Iron Age in the Ancient Near East. It is here only because there are links to it from other Pages, for example on nuclear weapons proliferation and why, in terms of the reactivity series, the iron age came after the bronze age, and I could not think of anywhere else to put it. It won’t help you pass any exams but you might find it interesting!
- Alcohol and alcohols
A simple account of the alcohols, fermentation and alcoholic drinks
- The heart
About the heart, one, two, three and four chambered hearts, valves, arteries and veins, pulse and blood pressure.
- Respiration, breathing and photosynthesis
About photosynthesis in plants, respiration in animals and plants, and breathing in animals.
faeces and urea
About the way in which we digest our food, what happens to substances we cannot digest, and the way in which we use proteins and get rid of our body's waste products.
- Plant nutrition
A simple account of nutrition in land and water plants, recycling organisms and the nitrogen cycle, and parasitic plants, mosses and lichens.
- The carbon cycle
A simple account of the carbon cycle on land and in water, and the role of plants, animals and decomposing organisms.
- A simple theory of colour vision
About how we see colour, rods and cones, and about how these make possible colour televisions and colour printing etc.
- Warm and cold blooded animals
About the difference between warm-blooded and cold-blooded animals and the meaning of some associated words.
- Classification of animals
A simple guide to the way animals are classified
In the following Pages the descriptions refer mainly to what is seen by people living between the Tropic of Cancer and the Arctic Circle. This is partly because this is where I live, and where most of my students and most of those who have told me they have visited my Web Site live (pace my Australian and New Zealand correspondents!), but mainly because although most of the greatest early astronomers and mathematicians came from China, India, Persia, Mesopotamia (an area which includes modern Iraq) or Arabia rather than Europe this is where they lived.
Teachers of astronomy, at any level, might wish to know about, and perhaps even join, the Association for Astronomy Education, which exists to support and help them.
- What can we see in the sky?
An introduction to the sky, by day and by night, with links to other pages.
- Why is the sky blue? and why we cannot see the stars by day
About partial and full eclipses of the Sun and Moon, annular and hybrid eclipses, eclipse watching, eclipses and astrology, and transits of Mercury and Venus
- The Earth, its orbit, and the length of the day
About the orbit of the Earth, circular and elliptical orbits, aphelion and perihelion, sidereal, true solar and mean solar days, the Equation of Time and the solstices.
- The Planets
- The size of the Solar
A simple game for children to help them understand the size of the solar system
- Shooting stars
A simple account of meteors and meteorites etc.
- Satellites and their orbits
About natural and artificial satellites, and a discussion on the orbits of artificial satellites of the Earth.
- Sam's Pages - a simple guide to naked eye astronomy
Under construction - please e-mail me your comments and suggestions
About these pagesI was a science teacher for nearly twenty five years. These Pages are based upon the worksheets I produced during this time. Each Page covers one topic, and includes an explanation of the scientific principles involved and some background information. It also tries to place each topic into its historical, social, ethical and environmental context.
I would greatly appreciate comments about them from anyone who has read them.
There is also a long
article on Time and its measurement elsewhere on this web site.
It is not primarily for children but it might be of
interest - to see it click here
pages are being added all the time so if the page you
want is not here yet please come back next week, or
e-mail me to tell me the subject that interests you.
I also do private tutoring, in science and other subjects, to young people living in the Medway Towns - for more
information about this please click here
I also help children with their Ancient Egypt projects but I
do this for nothing! Please go to Egypt for more information.
Another Note - mainly for teachers