Month: August 2013

Make chicken sounds with a cup

Make chicken sounds with a cup Long, long ago, instead of mice and monkeys, Reeko used chickens for all of his experiments (Reeko switched to lab rats and monkeys when one of his chicken experiments went terribly wrong). Chickens proved to be perfect for scientific exploration! They didn’t each much, they were easy to find, and when you were done with them, well, we all know that chicken soup is good for your health (unless, of course, you are the chicken). In fact, the only difficult thing Reeko found when using chickens for science experiments was catching them but even that Reeko solved with science. In this experiment, we’ll use a cup, a piece of string, and a paperclip to make a chicken caller. Oh, and if

Make a homemade hearing aid – collect sound vibrations using a paper cone

[sc:commonscripts] Make a homemade hearing aid Everything that moves makes a sound by causing vibrations or movement of air.  If you don't believe this, next time Dad is kicked back in his easy chair watching TV, sneak up behind him with two metal pots and bang them together real hard.  Now listen carefully to the whooshing sound as Dad flies out of his chair and runs towards the door.  By the way, if Dad offers no reaction and instead lies incredibly still, throw some water on him... The vibration or movement of air is the basis for sound.  Our ears collect these air movements and change them to nerve signals that are sent to our brain.  Our brain interprets these signals as sound. So what if we could collect

Make a homemade Kazoo musical instrument

Homemade Kazoo Ah, the sound of beautiful music. But what some will call music, others will call noise. The lab rats and monkeys are partial to Metallica while Reeko is more of a Beethoven aficionado. Put the two groups of musical tastes together and well, you have a big fight over what radio station to listen to. In this experiment, we’ll create a musical instrument called a Kazoo. With it, we’ll make beautiful music… or noise, depending upon your musical preference. 1 – Cut a small square of wax paper, about 1 inch larger than the end of your cardboard tube. 2 – Center the wax paper square over the end of the tube and wrap the edges. 3 – Put the rubber band around the wax paper so

Have you lost your marbles?

Have you lost your marbles? Sound surrounds us all the time.  You may awaken in the morning to the sound of an alarm clock or Dad snoring.  During the day you may hear the cacophony of auto traffic or the hustle and bustle of city life.  But all sounds have one thing in common.   They are formed by the movement or vibration of an object. The sounds we hear every day are formed by the vibration or movement of air.   Basically what happens is sound makes tiny particles in the air, called molecules, bump into each other.  The molecules bump into each other compressing and then expanding to cause the wave to move like a falling column of dominos.  This vibration of molecules is passed from molecule

Good, good, good vibrations – sound and vibrations experiment

Good, good, good vibrations Sound is actually nothing more than moving air and the way we perceive that moving air with our ears. Now you may be saying "Wait a minute Reeko... sound is made by moving air?". Sure.  Think about it.  Your dad moves a lot of air - right?  And he makes a nasty sound when he moves it - yes?  Let Reeko explain... Cut off a piece of two foot string (2'). Using a rubber band, attach a metal spoon to the midpoint of the string. Wrap the ends of the string around your fingers. Rest your fingers in your ears (don't stick 'em in too far or you'll poke your brains out!). Standing next to a table, rock your body back and

Sucking an egg into a bottle – heat and pressure experiment

Sucking an egg into a bottle Here's an interesting experiment that we promise you'll be talking about at school the next day. Find a bottle with a long, narrow neck and set it on the table.  The opening should be just small enough to keep the egg from falling inside. Boil and peel a egg. Have Mom or Dad drop 3 lit matches into the bottle (if Dad does the 'dropping' then make sure the fire extinguisher is handy). Quickly place the egg over the mouth of the bottle. What happens? The lit matches heat the air inside the bottle. When air is heated it expands (and takes up more room). As the heated air expands, some of it escapes out the bottle. When the matches go out,

Skating on thin ice pressure experiment

Skating on thin ice   Pressure - you feel it at school, your teacher feels it during class (yes, a room full of little scientists can be stressful for some teachers), and your dad feels pressure when Mom asks him for the tenth time to take out the trash. Here's an interesting experiment that demonstrates a different kind of pressure - the forces of scientific pressure and how it can affect other objects. Place the corked bottle on a table. It helps if the bottle has a small neck. Balance an ice cube on the cork. Cut off a 12 inch section of wire. Tie two hammers or other heavy objects to both ends of the wire. Balance the wire across the middle of the ice cube. How

Plastic cups in love – experimental demonstration of Bernoulli’s principle

Plastic cups in love What does a flying airplane and a pitcher's curve ball have in common. Well, besides the fact that both travel through the air at amazingly fast speeds - both are based on a principle called Bernoulli's principle. Bernoulli, (pronounced Burr New Lee) was a Swiss mathematician who liked to piddle around with these types of things. Now we get to piddle too... Out of the string, make 2-1 foot long pieces. Using tape, attach one end of the string to the bottom of one of the cups. Take the other end of the string and attach it to a table. Repeat steps 2 and 3 with the second cup. When taping this string to the table, make sure that the cups will

Marshmallows making funny faces

Marshmallows making funny faces With this experiment we'll cause marshmallows to make funny faces and demonstrate a scien-terrific principle called pressure. Draw a face on both ends of a large marshmallow (the flat end). Draw 'em to look like Dad if possible - it'll make the experiment much more humorous. Drop the marshmallow into a glass bottle. You'll have to make sure and use a bottle that has a opening slightly larger than the marshmallow. Take the straw and wrap the clay about 1 inch from the end in such a manner that the clay forms a 'ring' around the straw. Place the short end of the straw into the bottle. The clay should stop the straw from dropping all the way into the bottle. Now press the clay

Magical inflating balloons

Magical inflating balloons One of the first things a little scientist should learn is that heat causes things to expand (get bigger) and cold causes things to contract (get smaller). Things such as air will contract and take up less room when cooled. Similarly, things will expand when they get hot. If you don't believe this, carefully observe Dad's head the next time you break one of his expensive tools (Reeko tip - observe from a distance). Ok, so Reeko's gonna save you some heartache. Rather than test this by breaking one of Dad's tools, let's try the following experiment instead. Fill the bottle with hot water. Fill the bowl with cold water. Let both sit for one minute. Then empty out the bottle. Stretch a balloon over the mouth