Socratica
Chemistry: What Is an Ionic Bond?
Teach your class all they want to know about ionic bonds. An engaging video, part of the Socratica "Chemistry Lessons" playlist, explains what ionic bonds are and how they form. It describes multiple examples of ionic bonds and...
Socratica
Chemistry: Gay-Lussac's Law (Gas Laws)
If an aerosol can lands in a fire, it explodes due to Gay-Lussac's Law. A video from a chemistry playlist explains Gay-Lussac's Law and the relationship between pressure and temperature of gases. It includes two guided practice problems...
PBS
The Biggest Thing That Ever Flew
Imagine a reptile the size of a giraffe that flies across oceans. This reptile, quetzalcoatlus, existed, and scientists continue to learn more about this fascinating creature. The video, part of the Eons series, explains where the...
PBS
The Story of Saberteeth
Smilodon's fangs averaged 18 cm long. An engaging video explains what saberteeth are and how they evolved. It details the theories about how species used saberteeth and why cats don't have them today.
PBS
The Tully Monster and Other Problematic Creatures
Many reference mysterious fossils as belonging to monsters, but clearly they existed. A science series presents a video on problematic creatures. It specifically focuses on the tully monster, which, despite many fossils, has yet to...
PBS
The Higgs Mechanism Explained
In 2012, physicists discovered a new particle, the Higgs Boson. This particle, predicted by scientists for years, finally answered many questions in quantum field theory. A video in PBS Space Time's "The Origin and Matter of Time"...
PBS
The Real Meaning of E=mc2
Einstein proved that matter is energy. A video in Space Time's The Origin of Matter and Time playlist details the meaning of the equation E = mc^2 by converting it back to the original m = E/c^2. The advanced video...
PBS
The True Nature of Matter and Mass
Scientists know mass is energy, but what is energy? An engaging Space Time video delves into the topic as part of its The Origin of Matter and Time playlist. From quarks and gluons with no mass to the gravitational effect, the true...
PBS
When Time Breaks Down
Some define time by motion, but how exactly does this work? Space Time added a video as part of its The Origin of Matter and Time playlist to explore just this question. It breaks down the relationships between matter, motion, and time....
PBS
The Origin of Matter and Time
Time does not exist as a universal constant, yet it can be defined as a concrete reality. These concepts and more provide the inspiration for an episode of Space Time's larger series of the same name. It discusses causal order, the...
PBS
What’s Wrong with the Big Bang Theory?
A video highlights the contradictions in the Big Bang Theory and then discusses the need for a unifying theory of everything. Space Time presents an enlightening video as part of a larger series on Cosmology.
PBS
Why the Big Bang Definitely Happened
According to Space Time, many different studies prove the Big Bang happened. Part of a larger Cosmology playlist, it discusses the common arguments against and the newest science supporting the theory.
PBS
How Cosmic Inflation Flattened the Universe
What if time didn't begin with the big bang? Big Bang doesn't completely answer questions about the beginning of the universe, but cosmic inflation theory holds up better according to scientists in this video. Cosmic inflation fits so...
PBS
What Happens at the Edge of the Universe?
The cosmic even horizon of the universe is closer to us than the particle horizon. Space Time's Cosmology playlist tackles this and other complex concepts about the universe. The video discusses how the scientists define the edge of the...
PBS
Cosmic Microwave Background Explained
As part of their Cosmology series Space Time presents a video that explains the history of electromagnetic waves and the shifting and expanding wavelengths. It finishes by exploring cosmic microwave background radiation.
PBS
Will the Universe Expand Forever?
Scientists from Newton to Friedmann debated the future of the universe. Many scientists thought the universe might collapse on itself in a big crunch, but new mathematical models finally gave us an official answer. The Space Time video,...
PBS
How Do You Measure the Size of the Universe?
The universe is 90 billion light years in diameter. How do scientists measure something so huge? Space Time explains the process as part of its larger Cosmology playlist. The video addresses the steps to solving the puzzle as well as how...
Be Smart
Doomsday Machines
Nuclear weapons changed war forever. Scientists now know that a few of these weapons have the ability to change the climate and cause a mass extinction. Watch a video that details the ways these machines work—and the implications that...
Be Smart
How An Igloo Keeps You Warm
The idea of staying warm by surrounding yourself with ice confuses many—but it works! An informative video explains the science behind this as part of a larger playlist. It details the inspiration from animal shelters and how people make...
Be Smart
The Cheerios Effect
Why does cereal clump together in milk? Scientists answered this question in 2005 with the help of physics and math. A video explains the relationship between buoyancy, surface tension, and the meniscus. It teaches how to attract or...
Be Smart
Engines of Destruction: The Science of Hurricanes!
A typical tropical cyclone consumes the same amount of power as the entire United States. Scientists understand hurricanes and predict their sizes and paths. The video explains the relationship between hurricanes and ideal engines. It...
Be Smart
What’s Really Warming the Earth?
More carbon dioxide exists in the atmosphere than ever in human history. An informative video introduces the topic of global warming as part of a larger playlist. It looks at possible causes such as Earth's orbit, Earth's moving axis,...
PBS
The Trouble With Trilobites
Trilobites survived on Earth for longer than mammals have, so what was their secret? From their evolution to diversity, they survived multiple large changes in the environment—and even flourished. Then, in the matter of less than a...
PBS
When Did the First Flower Bloom?
Were the first flowers made in China? The first evidence of a flower, discovered in current-day China, changes the story of life on Earth. A short video details the evolution of flowers. It highlights the co-evolution of animals and...