Читать книгу Ontario Teachers' Manuals: Nature Study - Ontario. Department of Education - Страница 20

Air and Liquid Pressure:

Simple illustrations of the buoyancy of liquids and of air; simple tests to demonstrate that air fills space and exerts pressure; the application of air pressure in the barometer, the common pump, the bicycle tire, etc. (See pp. 248–52.)

Oxygen and Carbon Dioxide:

Generate each of these gases and test for properties, as colour, odour, combustion, action with lime-water; the place occupied by these gases in nature. (See pp. 252–5.)

Practical Application of Heat, Steam, and Electricity:

Making a simple voltaic cell, an electro-magnet, and a simple electroscope. Test the current by means of the two latter and also with an electric bell. Explain the application of the above in the electric telegraph and motor. Simple demonstration of pressure of steam; history and uses of the steam-engine. (See pp. 259–60.)