Welcome to our new video series: ‘Discover At Home’! Our team at DHDC is here for you and your kids in this time of social distancing. Whether you’re starting homeschooling while our schools are closed, or just want to give your kids some fun learning experiences at home, keep an eye on this page, our YouTube Channel, our Facebook page and Instagram feed for new videos.
This explosive reaction happens with the magic of soap molecules. When you combine the soap with the fat in the milk, it will begin jumping around. Dishwashing soap molecules pull in fat molecules to part of it. When the molecules attach, they will move around to make sure that every molecule is paired up, and this is what will make the color shoot around in the pan! Does the type of milk make a difference? Will the same reaction happen in water? We want to see your science at home, tag us in your experiments! @DHDCAmarillo
Episode 2: Convection Currents
We see convection currents in weather and in the oceans when you have a big difference in temperature. Hot water or air takes up a lot more space (is less dense) than cold water or air. In this experiment, the hot water will sit on top of the cold water without mixing because the water molecules will spread out (just like when you are hot, you don’t like to be right next to your friends) and the colder water molecules will condense together and take up less space. The hot water can’t muscle its way through the colder water because there’s not enough space for it to fit, so it will sit on top. When you have the cold water on the top, the hot water will want to find room to expand, and move upward, mixing the colors together.
🗣Discussion points: What are different ways to experiment with this? Does the temperature of the water make a difference? What if you have colored ice? We want to see your science at home, tag us in your experiments! @DHDCAmarillo
Episode 3: Baking Soda & Vinegar
Why is mixing vinegar and baking soda so exciting? Because it gets a (chemical) reaction! A chemical reaction happens when you have two chemicals that combine to form something new. Baking soda (sodium bicarbonate) is alkaline (basic) and has a higher pH than 7 on the pH scale. Vinegar (acetic acid) is acidic and has a pH lower than 7. Whenever you mix the two, the hydrogen atoms mix together to form an acid-base chemical reaction. The “new” things that we form when these two ingredients are mixed together (carbonic acid and sodium acetate) will have a SECOND chemical reaction called a decomposition reaction where these new ingredients will break down into water and carbon dioxide (the stuff we breathe out).
🗣Discussion points: What different states of matter do we see in this experiment? Do the amounts of the ingredients used make a difference? What did you find out? Tag us in your videos on social media! @DHDCAmarillo
Episode 4: Friction Balloon
🎈Friction Balloon: Why is this balloon screaming at me?! There are a lot of forces at play here. When you spin the hex nut around the balloon you are using centripetal force to push it against the balloon as it rolls in a circle. As it does this, the nut will bounce as it spins causing friction with each of its 6 points. This friction makes the balloon vibrate causing a crazy, screaming noise to come out of the balloon.
👉Try this: What happens if you change the materials used? Does it make a difference if the balloon is a different size? If the round object is smooth? Tag us in your experiments! @DHDCAmarillo
Episode 5: Paper Airplanes
🛩Paper Airplanes (Hoopsters):
In order to make something fly, or glide, both gravity and the air play a role. Gravity will pull an object down, and the air will help hold it up. If you drop a piece of paper, it will swish back and forth as it falls. It has to push the air aside as it makes its way down, and because a flat sheet of paper has a lot of surface area, it will fall slowly. Now, ball up that same piece of paper, and see if it falls at the same rate. In order for something to glide, there must be a balance between the gravity that pulls and the lift provided by the air, and the design of the aircraft is important in this balance. Flat fliers add drag on the tips of their wings, and the hoopster design will take that away.
👉Try new designs. If you add something, what works? What doesn’t? Can you add extra hoops? Weight? Tag us in your experiments. @DHDCAmarillo
Episode 6: Oobleck
💡 Oobleck is a funny substance that can behave like both a liquid and a fluid at the same time. These special substances are called non-Newtonian fluids. When you punch the oobleck, the particles are so close together, it is really hard for them to move around when a force is applied quickly, and it will act like a solid. When forces are slowly applied (like gravity), Oobleck will behave like a liquid and fill a container.
👉Try this: Can you roll the Oobleck in a ball in your hands? Can it protect an object if it’s dropped in a bag together? What are some experiments you can come up with? Tag us in your experiments!
Episode 7: Parachutes
💨Parachutes were designed for one basic purpose: to slow down falling. A parachute will use the air to “drag” against as it moves toward the earth. The canopy of the ‘chute hits the air molecules, causing resistance as it floats downward.
🗣Discussion Points: Does the shape of the parachute make a difference? If you test a round, square and rectangular ‘chute, will they fall at the same speed? Does the wind affect the fall? What about the weight that the parachute is holding? Show us your Science – share your experiments with us @DHDCAmarillo.
Thank you to our Social Distancing Science video sponsor: Sonic Amarillo
Feel free to email any questions you have about the science behind these experiments to our Executive Director, Dr. Aaron Pan at firstname.lastname@example.org.
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