ساينس الصف السادس الإبتدئي الفصل الدراسي الاول ساينس سادسة ابتدائي – ترم أول In This part we will study : Celsius Thermometer Structure : It consists of: 1.A transparent thick glass tube. 2. A capillary tube closed from one of its ends, the other end of the capillary tube is connected to the mercury bulb. 3. A bulb filled with mercury connected to the other end of the capillary tube. Uses : It is used in measuring the temperature of liquids or weather. A thermometer scale : This starts from 0°C to 100°C , and every degree is divided into ten parts. Using of Mercury in Making Thermometers. (G.R) 1. Mercury is a good conductor of heat. 2. Mercury is a liquid metal (has a luster and shiny) so, it can be seen easily through the glass thermometer. 3. Mercury does not stick to the wall of the capillary glass tube. 4. Mercury is a regular expanding material, so it gives an accurate reading. 5. Mercury remains liquid between two degrees temperature -390C and 3070C and this gives a wide range to temperature measurement. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا