Topics include stacking – crystals, angles and ionic radii; temperature – kinetic energy; solution; precipitation – particles stack as crystals; particles move fast – Brownian movement; gas has mass, KE, momentum; gas has pressure, temperature, volume; gas laws – P,V, and T in combinations.
Languages: English
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Relating to Peers
An appealing dramatisation of some common problems springing from low self esteem such as worthlessness, jealousy, shyness, bullying and peer pressure. Five scenarios are shown : Wendy tries to buy friendships; Mark gives way under peer pressure; Vicki is unsure of herself and a friendship; Mandy feels worthless after a breakup; Brad bullies others to disguise his feelings.
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Physics of Fun
Topics include PE and KE- roller coasters, trapeze, slides; W=F x Dist – falls into the safety net; vectors – tightrope walkers & cable cars; components of motion- resolving the complex motion in rides, SHM; trajectory – human cannon ball; angular acceleration – merry go rounds, loop the loop, banking; angular momentum – tumblers; pendulum – trapeze artists, swings.
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Plastics in Manufacturing
Topics include INJECTION MOULDING – Items being manufactured. Moulds in two parts, the force and the cavity. Moving cores allow undercuts. Hot and cold sprues; ROTATIONAL MOULDING – For production of large and hollow items in thermoplastic. A large box and a canoe; VACUUM AND PRESSURE FORMING – The process and design considerations. Twin sheet process. Financial factors in choice of process.
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Planers
The surface planer, or jointer, is the first machine tool demonstrated, in this informative and entertaining video. The honing and changing of the cutter blades is shown as well as proper and safe operating procedure. More challenging cuts are demonstrated, such as the planing of thin, cupped or warped stock, as well as square planing and end planing. Special joinery requirements are shown in detail: rebating, chamfers, and bevels. “Dropping on”, using a template, is clearly illustrated. The program also focuses on the thicknesser, or planing machine. Planing to thickness and planing to width are both demonstrated on the thicknesser, as is the use of jigs.
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Oedipus the King
Of interest to students of drama, ancient history and the Classics, this video recreates the ethos of Greek life and religion. Traditional elements of Greek theatre are effectively used to present this archetypal tale of familial and divine jealousies and rivalries.
A booklet containing a very detailed introduction and text accompanies the video. The introductions are aimed at the teacher and provide an analysis of tragedy itself as well as this play in particular. -
Ozone
A look at the Ozone including its molecular structure, physical properties, practical uses and the importance of the Ozone as a filter of UV A look at the Ozone including its molecular structure, physical properties, practical uses and the importance of the Ozone as a filter of UV radiation. Includes test methods for detecting the presence of ozone and the atmospheric processes that create and destroy it.
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Becoming Parents – Adoption
Local adoptions are down, intercountry adoptions are on the rise. After IVF failed, Birthe and Guy adopted 2 Korean children through DOCS inter-country adoption program. They strive to maintain cultural links between their children and Korea. They are supported through ASIAC, a support network of other adoptive parents. Gwenda, a social worker who interviews prospective parents for DOCS over the 2 years it takes to be assessed, stresses the special needs of overseas born adoptees and the adoptive family’s ability to empathise. Lynelle, a Vietnamese adult adoptee, and founder of ICASN, a support group for adoptees, stresses the adoptee’s confusion in identity and their need for cultural links with their country of origin.
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Nature of Matter
Some of the key experiments performed between 1870 and 1940 which established the structure of the atom. Cathode ray tubes, canal rays, mass spectrometer, Thompson’s plum pudding model, Rutherford’s gold foil experiment, the Bohr model and the orbitals and quantumz mechanical model.