How to make a simple thermometer?

# Pour a small amount of water that is color-coded into the bottle. # Enter a drinking straw up to touch the surface of the water in the bottle. # Cover with a tightly around the tip of the bottle neck hole with clay so that no air can enter. # Rub with your hands and if the bottle is considered a good water in the straw will begin to rise.

1. Enter the liquid as a medium into a vessel or tube. Clear and not too big. Maybe you can use a small tube similar to tube tera (or what it's called, I do not understand). The media can be used mercury or other, higher boiling point than water and melting points less than water. 2. Enter the water begins to boil and mark. This is a point 100 degrees C 3. Enter the water began to freeze, to get the duck 0 degrees c Please be divided equally, to get another point So I've learned in school