SciShow Kids
Make Your Own Compass!
Mister Brown and Squeaks are here to teach you all about the compass - and they will even help you make your own! NGSS Performance Expectations: 3-PS2-3: Ask questions to determine cause and effect relationships of electric or magnetic...
Bozeman Science
Magnetic Dipole Moment
The magnetic dipole moment is the torque experienced by a material placed in a magnetic field. The magnetic dipole is an intrinsic property at the magnet, domain, atom, and electron level. A magnetic dipole creates magnetic fields that...
SciShow
The Equator Is a Bad Place for These Rocket Launches
Some satellites orbit in the same direction the planet rotates, which means they get a boost for their launch, but most have orbits where that isn’t ideal, and that creates some challenges for engineers.
MinutePhysics
TOP 10 REASONS Why We Know the Earth is Round
TOP 10 REASONS Why We Know the Earth is Round
SciShow
What Makes Earth’s Magnetic Field Change Direction?
You might have heard that Earth is due for a complete flip of its magnetic field. And while our planet does have a history of this behavior, predictions of when it might happen are too complex to estimate a date for.
Bozeman Science
Magnetic Field of a Dipole
In this video Paul Andersen explains how current moving through a loop of wire can act as an analog for a magnetic dipole. Magnetic dipoles (like compass needles) respond to magnetic fields created by other magnets.
SciShow Kids
How Animals Find Their Way Home!
Jessi and Squeaks are back from their research trip and ready to keep learning with all of you! And on their trip back to The Fort, Jessi thought up a really interesting questions: how do animals find their way home?
SciShow
Can You Make an Accurate Map?
Earth is not flat. So, representing it on a flat surface can be challenging and always requires compromises.
Bozeman Science
Measuring the Magnetic Force
In this video Paul Andersen explains how a magnetic force arises when magnets or moving electric charges interact with one another. A magnetic dipole will orient towards a magnetic field. When an electric charge is moving it will...
SciShow
Did We Find Longitude Thanks To A...Clock?
The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition.
TED-Ed
TED-Ed: The infamous and ingenious Ho Chi Minh Trail - Cameron Paterson
The Ho Chi Minh Trail not only connected North and South Vietnam during a brutal war but also aided Vietnamese soldiers. The trail shaved nearly five months of time off of the trip and was used as a secret weapon of sorts. Cameron...
Crash Course
Magnetism: Crash Course Physics
You’re probably familiar with the basics of magnets already: They have a north pole and a south pole. Two of the same pole will repel each other, while opposites attract. Only certain materials, especially those that contain iron, can be...
Crash Course
How Did Religion Spread Along the Silk Road? Crash Course Geography
Today we’re going to talk about the collection of routes known as the Silk Roads, and explore how worldview and other ideas spread along those trade routes. The Silk Roads are responsible for everything from the spices we use when we...
Crash Course
The Civil War Part 2 Crash Course US History
In which John Green teaches you how the Civil War played a large part in making the United States the country that it is today. He covers some of the key ways in which Abraham Lincoln influenced the outcome of the war, and how the lack...
SciShow
How the First Americans Got There
This week, researches published a genetic analysis of the 11,500-year-old remains of a baby found in Alaska, near where the first Americans crossed the Bering land bridge. That analysis has answered some lingering questions about human...
SciShow Kids
Was There Water on Mars? | Let's Explore Mars! | SciShow Kids
When you look at a picture of Mars next to a picture of Earth, you might notice one big difference: Earth is covered in blue oceans and Mars doesn't seem to have any water at all! But scientists have discovered all kinds of clues that...
Crash Course
The Vikings! - Crash Course World History 224
In which John Green teaches you about Vikings! That's right, one of our most requested subjects, the Vikings, right here on Crash Course. So what's the deal with Vikings? Well, the stuff you've heard about them may not be true. The...
SciShow Kids
Migrations: Big Animal Trips
Have you ever moved? Some animals move too! And if an animal moves from one place to another for weather or food, it's called migration!
SciShow Kids
We Made These Magnets Float in the Air!
Jessi and Squeaks are working on an experiment: Making an ordinary magnet float in the air! Next Generation Science Standards: NGSS Performance Expectations: 3-PS2-3: Ask questions to determine cause and effect relationships of electric...
SciShow Kids
Turtle Travel Tips: How Magnets Can Help Us Navigate | Magnetoreception
When people travel a long distance, they'll usually use a map. But there are lots of animals that travel really long distances, too, and they can't use maps... so how do they not get lost? Our friend Dr. Turtleman calls in to explain!...
PBS
The Whole Saga of the Supercontinents
The study of natural history is the study of how the world has changed but Earth itself is in a constant state of flux -- because the ground beneath your feet is always moving. So if we want to know how we got here, we have to understand...
TED-Ed
TED-Ed: How North America got its shape - Peter J. Haproff
North America didn't always have its familiar shape, nor its famed mountains, canyons, and plains: all of that was once contained in an unrecognizable mass, buried deep in Rodinia, a huge supercontinent that lay on the face of the Earth....
PBS
The Age of Reptiles in Three Acts
Reptiles emerged from the Paleozoic as humble creatures, but in time, they grew to become some of the largest forms of life ever to stomp, swim, and soar across the planet. This Age of Reptiles was a spectacular prehistoric epic, and it...