answer these questions.
Answers
Answer:
1a) 1.Never hold the thermometer by the bulb while reading it.
2.Wash the thermometer with water or antiseptic solution before and after use.
3.While performing the experiment, don’t touch the bulb of the thermometer with the wall of the beaker.
4.Read the thermometer keeping the level of mercury along the line of sight.
1b) The clinical thermometer is designed to measure the temperature of human body only. The temperature of human body normally does not go below 35oC or above 42oC. That is the reason why this thermometer has the range 35oC to 42oC.
1c) Take a long and thin strip of iron and put wax on it at regular interval points. Heat the other end of the iron strip.
We will observe that as the end being heated becomes hotter, it gradually transfers heat to the other end. This is proven by the melting of the wax pieces placed at intervals. So this proven by the experiment that conduction of heat is taking place in the metal in active format.
1d) Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. ... The denser cold liquid or gas falls into the warm areas.
1e) During the daytime the land gets heated up quickly and the air above land becomes warmer than the air above the water. The warmer air over land begins to rise and becomes less dense. ... The denser air from the water moves towards the space above land. This results in sea breeze.