Adhesives make objects cohere (or adhere) together. Cohesion is the word for this sticking force. Cohesion occurs on lots of everyday objects – rain to car windows, chewing gum on the carpet, dirt to you when you have been in the garden. This experiment demonstrates cohesion (and does not leave a mess like the chewing gum!)
Try this fun experiment here.
Here is a great way for you to make an enormous eruption, better than the old vinegar and bi-carb trick.
Make your own volcanic eruption here.
Seeing your Blind Spot
Did you know your retina (the back part of your eye) reacts to light and sends signals to the brain? There is, however, part of the retina that doesn’t give visual information. This is your eye’s blind spot. You are so used to it, you don’t know it is there – until you try this simple experiment.
Try for yourself here.