TED-Ed
TED-ED: How heavy is air? - Dan Quinn
Too often we think of air as empty space - but compared to a vacuum, air is actually pretty heavy. So, just how heavy is it? And if it's so heavy, why doesn't it crush us? Dan Quinn describes the fundamentals of air pressure and explains...
SciShow
Why Don't Marine Animals Get "The Bends"?
"The bends" is one of the biggest risks that humans have to deal with when diving, but why don't marine animals, which are diving all the time, get them?
SciShow
5 Technologies Helping Us Explore The Deep Ocean
The ocean is the largest ecosystem on Earth, but it's still mostly unexplored. This is partially due to the challenges of ocean exploration, like bone-crushing pressure and the need to bring your own air. But here are five ways that...
SciShow
What is Wind?
We all know that warm air rises, but how does this scientific fact influence our weather and create those flows of air molecules that we know of as wind? In this episode of SciShow, Hank explains where wind comes from, what factors...
Crash Course
Equilibrium: Crash Course Chemistry
In this episode of Crash Course Chemistry, Hank goes over the ideas of keeping your life balance... well, your chemical life. Equilibrium is all about balance and today Hank discusses Chemical Equilibrium, Concentration, Temperature, and...
Be Smart
What's The Loudest Possible Sound?
What is the loudest possible sound? What about the quietest thing we can hear? And what do decibels measure, anyway? In this video you'll learn what makes sound
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
SciShow
Why Real Avalanches Aren't Like Cartoons
Avalanches can be powerful and dangerous, but not all of them are created equal, and not everything you've seen on TV is likely to actually set one off.
SciShow
The Truth About the Million-Dollar Space Pen
NASA spend lots of money and time to create a pen that could use in space, on the other hand, their rival Soviet just used a pencil' You've probably heard this story, but is it true? Here is the truth about the space pen!
SciShow
Why Is Salt So Bad for You, Anyway?
You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?
Bozeman Science
Ideal Gas Law
In this video Paul Andersen explains how the pressure, volume, amount, and temperature of an ideal gas are related. Absolute zero of a gas can be determined by varying the temperature and measuring the corresponding volume of a gas...
SciShow
The 17+ Different Kinds of Ice!
Ice is ice, right? Wrong! From the vacuum of deep space to the inside of ice giant planets, ice gets stretched and squished into way more forms than what we find here on Earth.
Crash Course
Interest Groups: Crash Course Government and Politics
Today, Craig is going to talk about something you fans out there have been demanding for months - money in politics. Specifically, we're going to talk about special interest groups and their role in the U.S. political system. Special...
Crash Course
Enthalpy: Crash Course Chemistry
Energy is like the bestest best friend ever and yet, most of the time we take it for granted. Hank feels bad for our friend and wants us to learn more about it so that we can understand what it's trying to tell us - like that any bond...
MinutePhysics
Why Do Compressed Air Cans Get Cold?
This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is under pressure and boils off when the pressure lowers, and energy...
SciShow
Sun VS. Atomic Bomb
Hank puts the immense power of the sun into perspective through comparison with the most powerful nuclear bomb ever detonated.
SciShow
You, a Dog, and an Elephant All Pee for 21 Seconds
The time it takes to you to tinkle is probably about the same as an elephant, even though an elephant's bladder is over 100 times larger. How can that be right? The answer is a combination of physiology and fluid dynamics.
TED-Ed
TED-ED: What light can teach us about the universe - Pete Edwards
Humanity has long been looking at the universe and asking the big questions: How did it begin? How will it end? Cosmologists are searching hard for the answers, but where do they even start? The answer is light. Pete Edwards outlines the...
Crash Course
Lymphatic System: Crash Course A&P
Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the...
TED-Ed
TED-Ed: Jean-Baptiste P. Koehl: Why are earthquakes so hard to predict?
In 132 CE, Zhang Heng presented his latest invention: a large vase he claimed could tell them whenever an earthquake occurred for hundreds of miles. Today, we no longer rely on pots as warning systems, but earthquakes still offer...
SciShow
No Ears, No Problem: Frogs Can Hear With Their Lungs
If you’ve ever looked at a frog’s head, you might have noticed that they don’t have external ears. So How do they hear?
Bozeman Science
Gas Pressure
In this video Paul Andersen explains how the gas pressure is the force applied over the area of the container. It is also the change in momentum as gas molecules interact with the container and is uniform throughout the sample. Several...
SciShow
Great Minds: James Hutton, Founder of Geology
Rocks are more than just rocks, they're the key to Earth's history!
SciShow
Why Do I Feel Lightheaded When I Stand Up?
Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question!