1. The plot of the industry and car metal. 2. The story of the ants. 3. The plot of the properties of materials that retain an electric charge and their application. 4. The story of the musical instrument drum.
1. Blast furnace.
The molten boiling metal.
Metal is poured into molds.
A thin steel wire twisted into a ring.
The strings of the piano.
Cars in the night city.
2.Ants-weavers for sheets.
Ants sew leaves together with a thin thread.
An ant Queen is driven into the finished house.
Weaver ants ' tree house.
3. Round plate with holes in the hands.
Screws are attracted to a large piece of the magnet.
Amber, worn on the fabric, gets an electric charge.
Portrait Of M. Faraday.
Experiments with Carnauba palm wax.
Different types of electrets.
4.Aborigines in skirts made of palm leaves dance around the fire to the sound of a drum.
Different ways of tapping the rhythm.
Hands pull the leather over the wooden deck.
The skin is strengthened with wedges and the drum sounds.