Heat -- In the glass and candle experiment, a candle is placed under an overturned glass. When the candle burns inside the glass, it uses up the oxygen, creating a kind of vacuum. As a result, the candle goes out due to the lack of oxygen. This experiment shows how oxygen is needed for a flame to keep burning.
To make oobleck, mix cornstarch and water in a bowl until you get a 2:1 ratio. Stir slowly and observe its unique behavior—it flows like a liquid but becomes solid under pressure due to its shear thickening properties.
Density/Buoyancy -- In the dancing raisins experiment, raisins are dropped into a glass of fizzy drink like soda. The carbon dioxide bubbles in the soda stick to the raisins, making them float to the top. Once they reach the surface, the bubbles pop, causing the raisins to sink again. This up-and-down movement makes it look like the raisins are dancing in the drink. It's a fun way to see how bubbles and objects interact in liquids.
"Hey there! Want to make your own cool lava lamp at home? Here's what you'll need: a clear bottle or jar, water, cooking oil, food coloring, and some Alka-Seltzer tablets. First, fill your bottle about three-quarters full with water. Then, pour in some oil, leaving space at the top. Add a few drops of food coloring to make it colorful. Break an Alka-Seltzer tablet into small pieces and drop one into the bottle. Watch as bubbles carry drops of colored water up and down, creating a lava lamp effect! You can add more Alka-Seltzer to keep the fun going. Just remember to be careful and have fun experimenting!"
"Hey everyone, let's make a colorful spinner that you can whirl by pulling on a string! All you need is a piece of sturdy cardboard, markers or colored pencils, a thumbtack, a paperclip, and a string. First, cut out a small circle or square from the cardboard and use the markers or colored pencils to decorate it with your favorite colors and designs. Next, poke a hole in the center of the cardboard using the thumbtack. Take a paperclip and unfold it, then bend one end into a small hook shape. Insert the straight end of the paperclip through the hole in the cardboard and bend it back to secure it. Now, cut a piece of string and tie one end to the paperclip hook. Hold the other end of the string between your fingers and give it a gentle pull to make the spinner whirl! Watch as the colors blur together to create a mesmerizing effect. Experiment with different designs and string lengths to make your spinner unique and exciting. It's a simple and fun way to explore art, motion, and color! Enjoy!"
Robotics -- To make a Sphero clock with coding, first set up your Sphero robot and programming tools. Get the current time and make the Sphero move and change colors to show hours, minutes, and seconds. Test your code and adjust it until the clock works well. If you want, you can add extra features like alarms. When you're happy with it, share your Sphero clock with others to enjoy its cool timekeeping display! Visit https://sphero.com/ to buy one for yoursef!
(Video: 1:05 to 1:30) Get an aerosol can and spray it as you point the laser pointer at a wall. The beam will be visible, view the video to learn more!
"Hey everyone! Get ready for a neat science trick using magnets and a battery! Grab a small battery, some copper wire, and a couple of small magnets. Now, take the copper wire and wrap it around the battery a few times, leaving some extra wire hanging off. Next, attach one magnet to each end of the battery with tape, so they stick firmly to the battery's positive (+) and negative (-) ends. Now, carefully balance the battery on a flat surface, making sure the magnets are facing down. Watch what happens when you give the wire a little spin - it starts to twirl around all by itself! This happens because the electric current from the battery creates a magnetic field, interacting with the magnets to make the wire spin. It's like magic, but it's really just science at work! Give it a try and see for yourself!"
Architecture -- Making a marble roller coaster with toilet paper rolls and cardboard is a fun project that anyone can enjoy. Start by gathering empty toilet paper rolls and cardboard. Cut the cardboard into strips to create ramps and turns, and use the rolls as supports. Experiment with different setups to make an exciting track. Then, release a marble at the top and watch it roll through the twists and turns. It's a simple yet entertaining way to explore and learn about how objects move and interact with each other.
Resistance -- To make a catapult with a spoon and popsicle sticks, gather popsicle sticks and a plastic spoon. Create three triangles by gluing two sticks together at the top to form a V-shape. Stack these triangles to make a pyramid. Attach the spoon to the base with rubber bands or tape. Put a small item like a marshmallow in the spoon's bowl. Press down on the opposite end of the spoon and let go to launch the object. Adjust the catapult's angle and tension for the desired distance. It's a fun way to learn about physics and engineering while enjoying launching things.
"The Da Vinci Bridge is a special kind of bridge that doesn't need any nails, screws, or glue to hold it together. Instead, it uses a clever design by Leonardo da Vinci, the famous inventor and artist. Imagine stacking a bunch of wooden blocks in a crisscross pattern to make a bridge shape. Each block pushes against the others, kind of like when you hold up a stack of books with your hands. This pushing force is called compression. Even though it looks simple, this design makes the bridge really strong! It's like a big puzzle where every piece fits perfectly to support the weight of the bridge and anything that crosses it. Da Vinci was a genius at coming up with ideas like this that combined art and science!"
The Monty Hall problem is like a fun game show puzzle! Imagine you're on a game show and there are three doors: behind one door is a fantastic prize, like a new bike, and behind the other two are silly things like a rubber chicken or a stuffed animal. You pick a door, let's say Door 1. Now, the tricky part comes in: the host, who knows what's behind each door, opens another door, let's say Door 3, which has a silly prize. Now you have a choice: stick with your original choice (Door 1) or switch to the other unopened door (Door 2). Even though it might seem strange, the best strategy is to always switch! It might feel weird, but statistically, you're more likely to win if you switch doors. It's a cool example of how probability works in unexpected ways!
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