1. Alkali metals and their reactions to air and water

    Duration: 02.15

    Watch Clip duration: 02.15

    The relative speeds of surface corrosion of alkali metals and their reaction with water.

  2. Can I escape from quicksand?

    Duration: 05.03

    Watch Clip duration: 05.03

    Why quicksand is dangerous and the forces involved that make it difficult to escape from.

  3. Changes of state

    Duration: 02.18

    Watch Clip duration: 02.18

    A description of melting, evaporation and sublimation.

  4. Changes of the state of water

    Duration: 01.40

    Watch Clip duration: 01.40

    A description of evaporation and condensation of water as it changes state.

  5. Conduction, convection and radiation

    Duration: 01.02

    Watch Clip duration: 01.02

    A glass of iced water in the sun is used to illustrate three types of thermal transfer.

  6. Conduction, convection and radiation

    Duration: 03.04

    Watch Clip duration: 03.04

    An explanation, with particle animations, of conduction, convection and radiation.

  7. Demonstrating heat shield material

    Duration: 04.20

    Watch Clip duration: 04.20

    A demonstration that space capsule heat shields have very low thermal conductivity.

  8. Demonstrating that gas has weight

    Duration: 03.06

    Watch Clip duration: 03.06

    A demonstration that carbon dioxide can be poured because it is denser than air.

  9. Earthquake engineering

    Duration: 05.39

    Watch Clip duration: 05.39

    The effects of earthquakes on buildings which are built on sandy soil.

  10. Filtration and distillation

    Duration: 01.48

    Watch Clip duration: 01.48

    Demonstrates how to separate sand and salt from water by filtration and distillation.

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