Cv Sciences Search Results

How To: Perform a cool water heat conduction experiment

This is a cool science experiment to show what a great heat conductor water is. You'll need some balloons, a candle and some water. Check it out and be amazed! Common sense tells you that it's impossible to boil water in a paper bag, but this classic parlor trick was a favorite of the Victorian magician. The real difficultly in performing this effect is making it look harder than it is! As you might imagine, the secret lies in yet another amazing property of water - it's ability to conduct he...

How To: Walk on cornstarch with this non-Newtonian fluid trick

Walk on water? Impossible. Walk on cornstarch? You bet! Check out this video to see what happens when you mix up a tub of cornstarch and water. It's goopy cool fun. Mix cornstarch and water in this classic experiment to form a gooey liquid and solid material that behaves like quicksand. Some people refer to this as the Oobleck recipe, others call it a Non-Newtonian fluid. After watching these video segments, you'll call it a great science lesson as your students learn about the amazing proper...

How To: Make blue phosphorescent glow-in-the-dark powder

Making a blue glowing substance is easy, as long as you already know the secret to making green luminescent phosphorescent glow powder. By watching the green glow-in-the-dark procedure, you know that you will need strontium nitrate, aluminum nitrate, europium and dysprosium nitrates, and nitric acid. That will make a green glow, but if you want to make a blue version, it's a relatively easy fix...

How To: Make an erupting volcano with soap

In this video tutorial, viewers learn how to make an erupting volcano with soap. Begin by adding some vinegar into a flask/baker. Then add some soap into the vinegar and stir it by shaking the flask/baker. Users may choose to add some food coloring to make the mix look more like lava. In a separate, add some water and baking soda. Then stir it to mix. Pour the baking soda solution into the soap and vinegar mixture. This video will benefit those viewers who are interested in science and experi...

How To: Create a cloud in a clear container

Do Try This at Home brings us video on how to create a cloud in a container. With just a few simple items household items we can create a cloud. He explains to us the science behind what he is doing and why is works the way it does. After that he demonstrates how to create the cloud with quite amazing results. He easily has created a cloud and suggests that we try this at home because it much easier to see and enjoy in person.

How To: Create a crazy ketchup packet water bottle experiment

This video displays a very interesting experiment or magic trick involving the concepts of density and buoyancy. You will need an empty plastic bottle with its label removed, some water, and a ketchup packet. Using the concepts of pressure and density, this video demonstrates an interesting experiment which can also double as an interesting party trick; by squeezing a full water bottle, you can cause the ketchup packet to rise and sink in the bottle at your whim. This video is an interesting ...

How To: Understand reduction & oxidation in Chemistry

Curious about reduction & oxidation? In this two-part episode of The Science Catalyst hosted by Barry Lambson, the subject of Chemistry, reduction & oxidation is gone over with iron powder and copper sulphate. Oxidation and reduction are heavily related which is why they are both considered "redox reactions". Acids and bases may be thought of as reactions involving hydrogen, or protons, while redox reactions tend to be concerned with electron gain and loss.

How To: Passivate titanium metal for electrochemistry

If you want to make some electrodes for electrochemistry, titanium strips are the way to go. It's rather interesting metal, and it's really hard, but can be cut with standard metalworking tools. Titanium filings are highly flammable, just like iron filings. But not everything is what it seems… this quick video on titanium and passivation electrochemistry tells why it makes it a bad anode if used without further treatment.

How To: Dissect a chicken wing

You've gotten enough satisfaction from gorging on fried chicken wings, so now it's time to learn the science of them. And not—we're not talking why they taste so freaking good, but how they work, pre-fried food. We're talking anatomy class, and if you can eat a piece of chicken, then you surely can dissect a chicken leg for educational reasons. Watch this video to learn about the chicken's triceps and bicep muscles, as well as what happens when the biceps and triceps contract.

How To: Dissect a human to see the axillary fossa (armpit)

The axillary fossa is classically known to most people as the armpit. Here, in this human anatomy video tutorial, you'll see how to dissect the axillary fossa, which in its technical definition is the hollow under the upper part of the arm below the shoulder joint, bounded by the pectoralis major, the latissimus dorsi, the anterior serratus muscles, and the humerus, and containing the axillary artery and vein, the infraclavicular part of the brachial plexus, lymph nodes and vessels, and areol...

How To: Grasp and calculate human blood pressure regulation

Check out this science-filled two-part video tutorial on blood pressure regulation in humans. This educational video will show you the MABP (mean arterial blood pressure), which is the overall blood pressure in your body, the TPR (total peripheral resistance), and the CO (cardiac output). You won't just learn about the blood pressure, you'll see how to calculate the MABP. You'll be fascinated, whether you're a physiologist, biologist, scientist, medical student, or just an human anatomy nut.

How To: test the acidity or alkalinity of certain liquids

Hmmm, all you've got is a piece of cabbage but you need to test the acidity or alkalinity of some liquid. What do you do? What DO you do!? Well, you start by watching this video by Steve Spangler. Ahh, the sweet smell of science! Invite your friends over to share in this super smelly but really cool activity. Plug your nose and get ready to make your own red cabbage indicator that will test the acidity or alkalinity of certain liquids.

How To: Build your own sous vide rig for cooking

Sous vide, or ultra-low temperature poaching, is transformed into a safe and precise science when you create your own rig in this informative video from Cooking With Geeks entrepreneur Jeff Potter. The essential components of this cooking device are a slow cooker, a thermocouple and a temperature controller. Watch the video to see these components combine into a DiY sous vide rig.

How To: Understand the hemoglobin & its role in the body

An in-depth explanation of the structure of the hemoglobin molecule, the process by which it binds with the oxygen in the lungs, how it dumps the same oxygen molecule at the appropriate location in the body and how carbon-dioxide gets attached to the hemoglobin molecule are the topics which the narrator in this video explains with diagrams and a few equations.

How To: Name an alkyl halide (or haloalkane) in organic chemistry

What's in a name? Well, your chemistry grade, for one. In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to name alkyl halides. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.