If you like to make something the hands and with interest watch weather forecast, time to make the thermometer has come.
It is required to you
- Water from under the crane
- Volumetric glass
- Food colorings
1. That to make thermometer, take glass jar and remove from it all labels.
2. Turn off cover from banks and make in it the opening, sufficient that in it there passed the straw.
3. Mix equal parts of water and alcohol and on quarter fill with this liquid to bank.
4. Add several drops of food coloring in bank – mix will become color that will allow you to watch temperature change more clearly.
5. Insert straw into opening which you had made in cover banks, but do not allow it to concern vessel bottom.
6. By means of clay seal opening in which there passes the straw.
7. Now it is possible to test your new thermometer. It is possible to put it in cup with hot, and then cold water – you will see as liquid level in straw will change.