Pressure

Build a real working hovercraft!

Build a real working hovercraft! So you want your very own hovercraft. Well once again, Reeko is here to help. Of course it's only big enough to hold a mouse (maybe two if the first one scrunches down real low) but hey, we're not old enough for a driver's license Cut a 4 inch square out of the cardboard. Punch a hole in the cardboard - you may need to get an adult to do this part. If you attempt it yourself be very careful. Make sure you punch the hole in the center of the cardboard. The hole should be the same size as the hole in the spool. Glue the spool to the cardboard on top of the hole. Make sure you glue…
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miscellaneous

The evolution of a spider (or not) – science and religion battle over Darwin’s Theory of Evolution

What is the Theory of Evolution? Being a prominent (ahem) member of the scientific community, Reeko has a lot of scientist friends.  Reeko knows that the thing that bugs scientists more than anything, is when people don’t believe their theories (well, that and burning lab coats). And when it comes to Darwin's Theory of Evolution, scientists treat it almost like a religion. On the flip side, some religions have a big problem with the scientists’ Theory of Evolution making the whole subject of “natural selection” a huge heated debate between scientists and religious groups. Scientists theorize that humans evolved from single cells to fish to monkeys. Some religious groups, called creationists, take offense at this proposal saying it’s silly to think that people magically grew, over…
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Atomic/Electric

Lemon battery experiment – if life gives you lemons, make a battery!

Lemon battery Batteries store chemical energy that can be transmitted as electrical energy through various components in a circuit. You can think of the circuit as the path the electrons (electricity) take. The path has to have no breaks in it and it much be a path made of a material that will allow the electrons to flow ( most metals although some are better conductors than others). Batteries, such as the one we are about to build, have electrodes, or the connection points on the battery. The anode is the electrode at which electrons leave the cell and oxidation occurs, and the cathode is the electrode at which electrons enter the cell and reduction occurs. In our battery, the lemon juice acts as the…
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