What You Need:
- Epsom salts
- Identical glasses - 2
- Glass double the size of the identical glasses - 1 large
- Paperclips or weights - 2
- Bowl or pot
- Fill a large glass with water right up to the brim and place it in a bowl or pot.
- Start adding Epsom salts and stir till the salts dissolve. Make a saturated solution of Epsom salts by adding Epsom salts till they can't dissolve any further.
- With the help of an adult, heat the bowl or pot on a stove. You should be able to dissolve more Epsom salts in a hot solution. Don't let the solution boil, but keep it on the stove until it is very hot. Add more Epsom salts and keep stirring.
- Distribute this water into 2 different glasses.
- Place these glasses in a spot where they will not be disturbed for a few days. There will be some dripping so if you are placing the glasses on a wooden table, make sure you place a tray under the glasses to protect the table.
- Cut a string. It needs to be long enough to cover the distance between the glasses and hang down to the bottom of both glasses.
- Put the paperclip on each end of the string and clip it to the glass such that one end of the string lies in each of the glasses.
- Place the 2 glasses at a distance such that the thread forms a 'U' shape between the two glasses.
- Watch as your stalactites grow over the next few days.
A stalactite is a type of speleothem (secondary mineral) that hangs from the ceiling of limestone caves. Every stalactite begins with a single mineral-laden drop of water. When the drop falls, it leaves behind the thinnest ring of calcite. Each subsequent drop that falls deposits another calcite ring. Eventually, these rings form a narrow, hollow tube commonly known as a stalactite.