Students make a tin can toy with a secret mechanism. When you roll it away, it comes rolling back!
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Positive and negative charges are opposite and attract. But how does a neutral material react around something charged? In this activity, students will observe the effects of charged objects on neutral materials.
Bernoulli's Principle states that as the speed of air increases, its pressure decreases. Airfoils create lift using Bernoulli effects. Air flows more quickly over the top surface of a wing than over its lower surface. An upward force is produced by the slower moving air beneath.
In this game, students will change from one form of water to the other at their teacher's command.
In this make and take, students visualize how air can act like a fluid by getting their gliders to ride an air wave!
Students use changes of state to create chilly architecture and some slippery slopes!
Salt lowers the freezing point of water. As it dissolves, the ice melts around each grain of salt. As a result, the ice is unevenly eaten away, forming a pitted, non-skid surface. This is why salt is...
Can't squash this!
Students explore the relationship between electricity and magnetism.
Can you make a battery using a piece of fruit?
Yes, but not a very strong one! The source of electric energy in this demonstration is the combination of copper and zinc strips in the citric acid of the lemon. The citric acid of the lemon reacts with the zinc and loosens electrons. Copper...
In this activity, students describe the effects of an acid on an eggshell. The reaction of the eggshell in vinegar is an acid-base reaction. When you submerge an egg in vinegar, the shell dissolves, leaving the inner semi-permeable membrane intact.
Vinegar (acid) breaks apart the solid...