Atal Tinkering Labs ATL

   

Make your own Compass experiment

The metallic core of the earth helps create the earth’s magnetic field with north and south poles. The compass reacts with the earth’s poles to point in the direction of the earth’s North Pole.   Rubbing the magnet against the needle in one direction caused the iron atoms in the object to line up and create a weak magnetic field, which made the needle behave like a magnet.   You had to rub in one direction to get the atoms to all line up in the same manner. If you had rubbed back and forth with the magnet, the atoms…

The Water Cycle: Rain on Demand

This experiment demonstrates the heat of the sun turning the water in the tub/bowl to vapor (evaporation). The vapor turning back to water droplets on the plastic wrap (condensation), drops getting too heavy and falling back down (precipitation) to the water in the glass which represents land (collection).   The evaporation and condensation are the key terms that help water purifying. While these processes occurs during the water cycle, it can also be used to purify water for drinking or industry use. Water is always moving. The movement is driven by the energy of the sun and the force of…

How to make a light bulb Experiment

Your not going to be able to read a book with this light, but pretty awesome just making light. The way it works is the electrons from the battery flow through the alligator clips and pencil lead, which is actually graphite, creating a closed circuit. Just like Simple circuits we did a while back. The graphite or filament becomes so hot it glows and fills the Mason jar with smoke.  

Simple Circuit Experiment | Fun and easy

The aluminum foil is the conductive path that the battery energy follows to light up the bulb.   There are a couple of other ideas that you could do to change up the project a little bit and see what happens.   You could try a different size battery, stack a couple of batteries together or have the aluminum foil make contact with different things.Try to make more complex circuits. See how many light bulbs will light up with one 9 volt battery.  

Shaving Cream Rain Clouds experiment

Observe your Shaving Cream cloud, as it gains mass and changes. As the water breaks through, drip food coloring on top of the cloud. This is such a cool experiment. Every time you get a completely different design. Kids love this experiment and you can buy shaving cream at the dollar store. So it’s not that expensive.  

Sharpie Science Experiment

I cut up a sheet into 6 ½ to 7 inch squares, size of sheet depends on what size cup you use. I use a red solo cup. Then put the sheet piece over the top of the plastic cup and secure it with the rubber band – it will look like a little drum. Choose one of the colors of sharpie pen and make dots in the center of the sheet piece. Choose another color and make more dots. Repeat. The circle of color should be about the size of a quarter. Now slowly squeeze about 20 drops of…

Quick Crystals with Epsom Salt Experiment Kids Fun Science

How do the Epsom salts crystals grow? Hot water holds more Epsom salts crystals than cold water does. That’s because heated water molecules move farther apart, making room for more of the Epsom salts crystals to dissolve. When no more of the crystals can be dissolved, you have a saturated solution. As this solution cools, the water molecules move closer together again.   Cooling the solution rapidly (in Freezer 10 minutes) encourages fast crystal growth, since there is less room for the dissolved salt in the cooler, denser solution. As the solution cools, the magnesium sulfate atoms run into each…

Trash Bag Pressure Experiment

WARNING: Never put anyones head inside the trash bag. Kids should be over 100 lbs (45kg) as the air pressure is pretty powerful. Also a good idea to have one person behind the person in the bag and another operating the vacuum on and off.   We can’t feel the weight of the atmosphere and don’t even notice it. When the pressure is lower inside the trash bag than the pressure outside the trash bag you notice this change and can feel the atmospheric pressure.   Climb inside a 55-gallon trash bag and then have someone suck out all the…

Slinky Drop Science Experiment

If i drop a Slinky you probably won’t be able to see it what happens, as it happens to fast. In Slow motion you can see the results, but maybe not understand what you saw.   You can see with the slow motion that the bottom end stayed completely still after I let go of the top and waited until the whole shiny came down until the it started to fall.   The bottom end has gravity pulling it down and tension pulling it up. Equal and opposite forces, then when the top of the slimy reaches the bottom there…

Exploding Watermelon with rubber bands

Safety: Wear Safety glasses and do not look directly over the watermelon as it is going to shoot up like a rocket!   This demonstrated show the difference between potential and kinetic energy by exploding a watermelon with rubber bands.   You will need a watermelon, 300-400 rubber bands, some Safety glasses and do this outside. Mom’s don’t think its funny doing this experiment indoors. : )   Put your melon on a table. We use a cardboard box to hold it up right. You will need two volunteers for the experiment as its little hard to pull the rubber…

Amazing inside out hard-boiled egg Experiment

The science behind it is that the yolk of the egg is more dense than the albumen. When you spin the egg rapidly, the runny yolk is drawn towards the edge of the egg via the centrifugal force, while the albumen is pushed to the centre.   If you spin the egg for long enough, the yolk and albumen separate, so that when boiled the egg appears inside out.If you don’t spin it for long enough, the two mix so that you get an instant scrambled egg. This was a lot harder than I thought it was going to be….

Talking tape Experiment

Talking Tape is a plastic strip less than 1/8 inch wide with a thickness 2 or 3 sheets of paper and about 24 inches long. Talk is recorded on one side and easily played by thumbnail.   How it works? Just attach the pointed end of the Talkie Tape to the article you wish to talk. (I used a balloon and paper) Slide the nail of your thumb down the tape. That’s it, that is all there is to it. No player, no batteries, no contraptions, no problems.Try different objects to see which produces a better sound.  

Vocal Visualizer Experiment

Use your voice to transform laser light into dazzling patterns. By humming, singing, or talking into the Vocal Visualizer, you’ll be able to see sound as vibration.   What’s Going On? When you vocalize, you cause air molecules to vibrate. These vibrating molecules strike the rubber balloon membrane. The membrane vibrates, causing the mirror to wiggle in turn. The laser light bounces off this wiggling mirror, tracing out various shapes and patterns that you can see. (That’s why we call this the Vocal Visualizer!) The different amplitudes and frequencies of the sounds emanating from your mouth cause different shapes and…

Wire hanger and string sound experiment

Sound waves are created by the vibration of an object, in this case with a hanger. When vibrations hit your eardrum, your brain interprets the vibrations as sound. The sound waves can travel through air, liquids and solids. When we listen to the hanger hit the wall with the string to our ears, the sound waves are traveling through the solid string and hanger. Since sound waves travel more quickly through solids, we hear the sound more clearly. When we bang the hanger without putting the string to our ears, the sound waves are traveling through air to get to…

Pencil record player and speakers Experiment

Vinyl records have grooves in them. These grooves have bumps and bends that correspond to the recorded music and voices.   As the record turns, the tip of the pin travels within these grooves, following these bumps and bends and causing the pin/needle and cone/cup speaker to vibrate.   The vibrations in the cone/cup cause the air to vibrate. These vibrations then come out from the cone to your ear, which you hear as music, voices, or whatever has been recorded.  

Twirling sound hose experiment

Sound Tubes are our absolute a great hands on sound experiment. When spun in a circular motion, these tubes produce a tone. When swinging it around it creates low pressure at the free end and the higher pressure on the hand end. When whirled in a circle it becomes a simple centrifugal pump. This pressure gradient causes air to flow through the tube. When the air is going through the tube in bounces over the ridges in the tube. Which disrupt the airflow to produce loud, musical tones. The faster the tube is whirled, the higher the pitch of those…

Singing Glasses Toothpick Mover Experiment

As you rub your finger on the rim, your finger first sticks to the glass and then slides. This stick and slide action occurs in very short lengths and produces a vibration inside the glass, which in turn produces a sound. As soon as the first few vibrations are produced, the water in the glass starts to vibrate and create one clear tone. You can change the pitch (highness or lowness of the sound) by adding to or subtracting from the amount of water in the glass. The volume (loud or quiet) can be changed only a little bit by…

Tensor tympani muscle experiment

The tensor tympani is a muscle within the ear. Its role is to dampen sounds, such as those produced from chewing. Contracting muscles produce vibration and sound. The sound is usually described as a rumbling sound   Slow twitch fibers produce 10 to 30 contractions per second (equivalent to 10 to 30 Hz sound frequency). Fast twitch fibers produce 30 to 70 contractions per second (equivalent to 30 to 70 Hz sound frequency). The vibration can be witnessed and felt by highly tensing one’s muscles.   Go to a quiet room and stick your fingers in your ears. What you…

Trick your brain Sound Experiment

Your brain has various ways of detecting where a sound is coming from, but the main one uses the fact that you have two ears (known as binaural hearing). Sound travels at about 330m/s which means that if there is something noisy to your left, the sound will get to your left ear about a 2000th of a second before it arrives at your right ear. This means that the signal will get to your brain this much sooner, and so your brain can calculate that the source of the sound is to your left.   Similarly, if the object…

DIY best Slime recipe

Empty the bottle of glue into a mixing bowl. Add water and mix, then add the liquid starch in increments stirring with each addition. When the slime comes to a doughier consistency Add more starch if needed if slime is sticky. Store in a plastic bag or container. Slime can get moldy so store in the fridge to extend its lifetime.  

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