We all need to be aware of our nutritional requirements, how they differ and change throughout life, and how we can plan our diets in order to meet our needs. This video looks at what nutrients do, how and why our nutritional requirements vary, and explores three situations where menu planning is particularly important for achieving a balanced diet (teenagers going on a wilderness camp, choosing to be vegetarian and living on a budget).
Languages: English
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Meteorites
Comets, meteorites, and asteroids. The effects of meteorites on the dinosaurs and the shape of our planets surface. The discovery of Iridium concentrations in rock strata and their links to meteorites. Satellite images of craters in Siberia, Mexico, Canada, Australia and Namibia. Computer generated images of meteorites. Chrondites, containing amino acids, supplying the original matter of our solar system.
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Mechanisms of Evolution
Mechanism of Evolution covers the 3 main mechanisms of evolution, Genetic Drift, Mutation and Natural Selection. By modelling the process using counters, it unlocks the mechanical process of evolution.
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Light Fantastic
A series of examples of what light can do. Uses footage from our senior videos. Topics include sources of light; what is light – what a photon looks like; transparency and reflection – explanation; refraction, prisms, optical fibers; splitting light into colors – prism, soap films, diffraction gratings and glasses; mixing light to produce white; polarized light – fun experiments.
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Location
Everything is where it is for a reason. This video investigates the basic concepts of ‘friction of distance’ and ‘geographical inertia’ to explain why things are where they are. We also look at historical, environmental and economic factors that affect the location of homes, business and industry, towns, power sources, bridges, tunnels, rocket launch-pads and canals. The effects of changing technology on location are also examined.
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Logging in PNG
Examines the effects of uncontrolled logging in a tropical environment, both on the ecology and on the local inhabitants and the associated political and economic pressures from multinational logging companies.
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Latitude and Longitude
The video examines Earth as a sphere, it defines latitude and longitude and explores how this global referencing system is applied. The video follows the crew of a 30,000 ton container ship as they navigate their way around the globe. Subject areas covered include: great circles and small circles; latitude and longitude defined; finding locations; the relevance of zero longitude and why it passes through Greenwich; why the Equator is zero degrees Latitude; defines the distance in kilometers between degrees of longitude and why minutes and seconds must be used to describe locations with greater accuracy; how the shortest distance between sea ports is along great circles; how the meter and nautical mile is determined as a unit of measurement; using GPS receivers.
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Letter to Santa
This enchanting puppet story combines the unique feeling of an Australian Christmas with the magic of the Santa Claus legend. Sally lives in drought-stricken outback Australia, and writes to Santa asking not for presents, but for rain. Joey the kangaroo and other animals help Santa in his mission to help Sally, by bringing a giant snowball to Australia from the North Pole. A truly delightful story, loved by young ones.
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Lifestyle Diseases
A couple of teenagers go to a fortune teller to find out what they will look like when they are older, they take in to account their present lifestyle. When the girl sees what her boyfriend will look like …. Medical research shows that lifestyle plays an important role in diseases and our life expectancy. Teenagers’ dietary and exercise habits, use of drugs and alcohol, do affect their predisposition to heart diseases, cancer, diabetes and other serious illnesses.