Crash Course
Optical Instruments: Crash Course Physics
How do lenses work? How do they form images? Well, in order to understand how optics work, we have to understand the physics of light. In this episode of Crash Course Physics, Shini talks to us about optical instruments and how they make...
Crash Course
Electric Charge: Crash Course Physics
Moving on to our unit on the Physics of Electricity, it's time to talk about charge. What is charge? Is there a positive and negative charge? What do those things mean? In this episode, Shini talks about electrostatic forces, electrical...
Crash Course
Introduction to the Solar System
In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other celestial objects we have today.
SciShow
Planet 9 from Outer Space
Could we have a possible 9th Planet? Hank Green tells us what we think we know with this elusive object.
Be Smart
Illuminating the Universe: The History of Light
Beyond what we can touch, taste, smell, and hear, we experience the universe through light. But how did we come to discover light, and how did we learn light's true nature, as the fastest thing in the universe, an electromagnetic...
TED Talks
TED: Why are stolen African artifacts still in Western museums? | Jim Chuchu
African artifacts shown in museums worldwide are often not borrowed, but stolen -- and TED Fellow Jim Chuchu is on a mission to get them back. Learn the sordid history behind how many of the collections in the West came to be, Chuchu's...
Crash Course
Galaxies, part 1
The Milky Way is our neighborhood in the universe. It’s a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular....
SciShow Kids
Sink or Float?
Join Jessi and some new friends for an experiment to see what sinks, and what floats!
SciShow
When Sex is Hard
When it comes to sex things can be complicated, but for the three species we are looking at today, sex is really hard.
SciShow Kids
Meet the 5 Dwarf Planets!
Jessi introduces you to some of the most newly-named members of the solar system: the five dwarf planets!
TED-Ed
TED-ED: When to use "me", "myself" and "I" - Emma Bryce
Me, myself, and I. You may be tempted to use these words interchangeably, because they all refer to the same thing. But in fact, each one has a specific role in a sentence: 'I' is a subject pronoun, 'me' is an object pronoun, and...
Crash Course Kids
Measurement Mystery
So now that we know what Properties are, how can we use them to figure things out? In this episode of Crash Course Kids, Sabrina uses them to solve the mystery of what she tripped over last night. This first series is based on 5th grade...
MinutePhysics
What is Gravity
In this episode, we discuss the basic nature of gravity, one of the four fundamental forces in our universe.
TED-Ed
TED-ED: Is there a difference between art and craft? - Laura Morelli
Was da Vinci an artistic genius? Sure, but he was also born in the right place at the right time -- pre-Renaissance, Western artists got little individual credit for their work. And in many non-Western cultures, traditional forms have...
Crash Course Kids
Everything Revolves Around You
So, why doesn't the moon just crash into the Earth? And why doesn't the Earth crash into the Sun? What are orbits exactly and why do they happen? Well, it has to do with gravity and velocity. In this episode of Crash Course Kids, Sabrina...
Crash Course
The Gravity of the Situation
In today's episode, Phil looks at how gravity plays out across the universe.
Crash Course Kids
Defining Gravity
So, if gravity pulls everything down, then why don't things on the bottom of the Earth get pulled down into space? In this episode of Crash Course Kids, Sabrina talks about gravity and explains that when we talk about gravity pulling...
Bozeman Science
ESS1B - Earth and the Solar System
In this video Paul Andersen explains the parts of the Solar System; including the planets, dwarf planets, moons and asteroids. He explains how everything orbits around the Sun and how a proper understanding of this heliocentric model...
Bozeman Science
What is Physics?
Mr. Andersen explains the importance of physics as a science. History and virtual examples are used to give the discipline context.
TED-Ed
TED-Ed: Newton's 3 Laws, with a bicycle - Joshua Manley
Why would it be hard to pedal a 10,000 pound bicycle? This simple explanation shows how Newton's 3 laws of motion might help you ride your bike.
Bozeman Science
PS3B - Conservation of Energy and Energy Transfer
Paul Andersen explains how energy is conserved within a system. In both macroscopic and microscopic collisions the amount of energy before the collision is equal to the amount after. He then defines heat as energy transfer between...
SciShow
Pluto Might Have a Liquid Water Ocean! SciShow News
Pluto might seem like the least likely place to find liquid water, but thanks to New Horizons, we have new information about oceans on the dwarf planet and more from the outer reaches of the solar system!
Bozeman Science
Newton's Three Laws of Motion
Mr. Andersen defines Newton's three laws of motion. He describes how the first law relates to inertia, how the second law relates to mass and acceleration, and how the third law allows a rocket to launch.
TED-Ed
TED-ED: Plato's Allegory of the Cave - Alex Gendler
Twenty four hundred years ago, Plato, one of history's most famous thinkers, said life is like being chained up in a cave forced to watch shadows flitting across a stone wall. Beyond sounding quite morbid, what exactly did he mean? Alex...