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Curated Video
The Science and History of Soap: How it Cleans and Protects
In this video, the teacher explains the science behind soap and how it cleans our skin. They discuss how soap is made from fatty acids and salt, and how it emulsifies to mix with water and remove dirt and grime from our skin. The teacher...
Curated Video
Exploring Images: From Animation to Optical Illusions
This video explores the different types of images and how they are made, including political cartoons, traditional animation, and optical illusions. It highlights the artistry and creativity involved in creating animated images and...
Curated Video
The Invention of Television: Philo Taylor Farnsworth and the Power of Visual Communication
This video explores the invention of television and the impact it has had on society. It highlights the story of Philo Taylor Farnsworth, a farm boy from Utah who had the idea to transmit images through parallel lines of light, leading...
Curated Video
The Science of Cloning: From Fiction to Reality
This video discusses the concept of cloning, explaining the different types of cloning and providing examples of cloned animals. It also addresses the misconception that clones always look identical, highlighting that while clones are...
Curated Video
Exploring the Wonders of Death Valley: A Mysterious and Otherworldly Landscape
Death Valley is a vast and intriguing National Park, known for its extreme heat and arid conditions. Despite its harsh environment, it is home to a surprising amount of life, including unique wildlife and vibrant wildflowers. The park...
Curated Video
The Evolution of Voting Rights in the United States
This video provides a brief history of how the United States transitioned from being ruled by preordained monarchies to a country where citizens have the right to vote. It highlights the Revolutionary War, the drafting of the US...
Curated Video
Exploring the Wonders of the Dead Sea: The Lowest Place on Earth
The video explores the fascinating characteristics of the Dead Sea, known for its high salt content and buoyancy. It highlights the unique experience of visiting this landlocked body of water, where swimming is impossible due to the...
Curated Video
Understanding Heat Waves: Causes, Impacts, and Preparation
This video discusses the definition and causes of heat waves, as well as the increase in their frequency due to global warming. It provides tips on how to stay cool during a heat wave, emphasizing the importance of staying hydrated and...
Curated Video
The Fascinating World of Polar Bears: Surviving in the Arctic
This video explores the fascinating world of polar bears, the largest living land carnivore and the only bear species classified as a marine mammal. It delves into their unique adaptations, hunting strategies, and the challenges they...
Curated Video
Wind Turbines: Harnessing the Power of the Wind for Renewable Energy
Wind turbines are giant futuristic windmills that use the power of the wind to generate electricity. The wind turns the blades of the turbine, which then powers a generator to produce clean and renewable energy. Wind power is...
Curated Video
Journey to the West: The Oregon Trail and the American Dream
"The Oregon Trail was a vital route that facilitated the westward expansion of the United States in the 1800s. Over 400,000 pioneers embarked on this treacherous journey, facing challenges such as crossing rivers, rugged terrains, and...
Encyclopaedia Britannica
Did You Know? The Indianapolis 500
Learn more about the Indianapolis 500 car race.
National Science Foundation
National Science Foundation: Science of Speed: Grip
Success in auto racing depends on the grip of a car's tires. Grip is the frictional force that holds the tires on the track. Aerodynamic features of a car also improve a car's grip. [5:02]
National Science Foundation
National Science Foundation: Science of Speed: Load Transfer
The corners of a NASCAR track are divided into three parts because the car's grip changes in different parts of the turn. A race crew must try to minimize load transfer by making adjustments based on a car's centre of gravity. [5:05]
National Science Foundation
National Science Foundation: Science of Speed: Tires and Pressure
Tires on a car in a NASCAR race are filled with nitrogen. The force of friction increases tire pressure as the car goes around the track. Using dry nitrogen gas helps with predicting the temperature and pressure of a tire during a race....
National Science Foundation
National Science Foundation: Science of Speed: Balance
Getting the right balance in a race car is difficult because the weight of the fuel changes as the fuel burns off, and the tires wear down during each green-flag run. [5:16]
National Science Foundation
National Science Foundation: Science of Speed: Car Safety
Conservation of energy explains how this NASCAR race car driver was able to walk away from a horrific crash in 2008. See how the design of the car enabled it to absorb and transform kinetic energy, and protect the driver from injury. [5:30]