Crash Course
Light
In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to analyze those colors and determine an object’s...
Bozeman Science
LS2C - Ecosystem Dynamics, Functioning and Resilience
In this video Paul Andersen explains how ecosystems respond to disruptions. Disruptions can cause changes in the number and variety of organisms. It can also lead to migration, extinction or even speciation. Ecosystems that have a higher...
SciShow Kids
How do Whales, Penguins, and Polar Bears Keep Warm?
Have you ever wondered how animals can live in super cold places all the time? Jessi shows you how some cool animals like whales, polar bears, and penguins, keep warm!
SciShow Kids
Why Do We Put Salt on Icy Sidewalks? | Winter Science | SciShow Kids
It's snowing and Mister Brown needs to go put some salt on the Fort's front steps. But Squeaks wants to know, why do we put salt on icy sidewalks?
Second Grade Next Generation Science Standards
Disciplinary Core Ideas:
PS1.A:...
PBS
Cosmic Microwave Background Explained
HAS SPACE ALWAYS BEEN BLACK? As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when...
SciShow
The Hunt for the Highest Melting Point
What has the highest melting point known to us? Hank Green explains in this episode of SciShow.
SciShow
Getting To Know Cows Inside and Out | Compilation
From being able to eat grass, to changing the weather with their burps: Cows are incredible creatures!
MinutePhysics
The Origin of Quantum Mechanics (feat. Neil Turok)
The Origin of Quantum Mechanics (feat. Neil Turok)
SciShow
What Do Food Expiration Dates Actually Mean?
Sell By, Best By, and Use By... do these dates actually tell you anything? Food science can be tricky, but we're here to clear some of it up.
Bozeman Science
The Rate Constant
In this video Paul Andersen describes the characteristics of the rate constant in chemical reactions. The rate constant is highly variable in reactions and must be determined experimentally. The rate constant is dependent on both...
Crash Course
Real Gases: Crash Course Chemistry
Hank bursts our ideal gas law bubble, er, balloon, and brings us back to reality, explaining how the constants in the gas law aren't all that constant; how the ideal gas law we've spent the past two weeks with has to be corrected for...
SciShow
Why Does Spicy Taste 'Hot' and Minty Taste 'Cool'?
A Quick Question answer that explains the chemistry that makes minty things taste “cool” and spicy things taste “hot”.
Bozeman Science
Energy Changing Processes
In this video Paul Andersen explains how energy can enter and leave a system. The amount of energy a substance can receive through heating or lose through cooling is measured using the specific heat capacity. Phase changing energy from...
SciShow
Why Yapoks Need a Pouch for Their Junk
Yapoks are cute aquatic marsupials, and they're the only living creatures that need pouches for their sacs.
SciShow
Why You Should Never Put Tomatoes in the Fridge!
Without refrigerators, we'd have spoiled milk, moldy cheese, and warm sodas. However, there are some foods that don't fare so well in a chilly fridge, including tomatoes.
Bozeman Science
Activation Energy
In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of...
Bozeman Science
Nuclear Reactions
Mr. Andersen contrasts nuclear reactions to chemical reactions. He explains the four main forces of nature; including gravity, electromagnetism, strong, and weak nuclear forces. He also explains how fusion differs from fission.
Bozeman Science
Positive and Negative Feedback Loops
Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. He uses thermoregulation in mammals to explain how a negative feedback loop functions. He uses fruit ripening to explain how a positive feedback...
Crash Course
Why We Can't Invent a Perfect Engine: Crash Course Engineering #10
We’ve introduced the 0th and 1st laws of thermodynamics, so now it’s time to move on to the second law and how we came to understand it. We’ll explain the differences between the first and second law, and we’ll talk about the Carnot...
SciShow
Why Does Humidity Make It Feel Hotter?
It turns out there's a scientific explanation behind the saying, "It's not the heat, it's the humidity!" Learn why a hot and humid day feels so dismal and some tips to avoid the really sweaty, gross days on today's Quick Question!
Bozeman Science
Homeostatic Loops
Paul Andersen describes four important homeostatic loops in biology. He begins with a brief description of the elements of a homeostatic loop. He then describes how the hypothalamus helps us maintain a stable internal body temperature....
Bozeman Science
Kinetic Theory and Temperature
In this video Paul Andersen explains how the macroscopic measure of temperature can be related to the average kinetic energy of molecules in motion. The Boltzmann constant and distribution can be used to calculate the root mean square...
Bozeman Science
Calorimetry
In this video Paul Andersen describes the history of calorimetry and explains how it can be used to measure energy changes in a system. The specific heat of water is well established and so as a system releases or absorbs energy from a...
SciShow
How to Stop Getting Zapped By Static
You just wanted to shuffle across the room in your pajamas and bunny slippers, but when you go to reach for the door knob... you get shocked! What gives!? What causes this strange effect?