This is a great infographic that shows data related to the decline in the number of sports officials.
Have you ever wondered why we wear clothes? I mean, beyond the obvious. Why does wearing a jacket in the cold keep you warmer? What is happening to all the heat inside your body? In this episode of Crash Course Physics, Dr. Shini talks about the physics of heat.
Have you ever heard of a perpetual motion machine? More to the point, have you ever heard of why perpetual motion machines are impossible? In this video, Dr. Shini discusses the first law of thermodynamics.
One of the greatest inventions is the steam engine. But why? What makes it so useful? And how does it work? In this episode of Crash Course Physics, Dr. Shini talks to us about how engines work, what makes them efficient, and why they're pretty cool.
This video discusses the physics of electricity and Coulomb's law--it's time to talk about charge. What is charge? Is there a positive and negative charge? What do those things mean?
This Crash Course Physics video discusses electric fields and Coulomb's law. As we learn more about electricity, we have to talk about fields. Electric fields may seem complicated, but they're really fascinating and a crucial part of physics.
How do defibrillators you see on TV actually work? Physics can explain! In this video, Dr. Shini has the task of breaking down electrical potential energy, electric potential, voltage, capacitors, energy storage, and potential energy.
Electric current works somewhat like a river. Instead of flowing based on elevation, electric current works a little differently. In this episode of Crash Course Physics, Dr. Shini talks to us about electric current, voltaic cells, and how we get electric charge.
Batteries power much of your daily life. This episode of Crash Course Physics discusses how they work. It also explains how terminal voltage results from the natural internal resistance of every real battery.
In this episode of Crash Course Physics, Dr. Shini walks us through the differences between series and parallel circuits and how that makes Christmas lights work the way they work.
What happens when there are multiple batteries connected in parallel? What happens when we add capacitors into the mix with resistors in our DC circuits? In this video, we’ll encounter junctions, loops, and capacitors.
Magnets 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 magnets. There’s a magnetic field around Earth, which is why you can use a compass to figure out which way is north. In this episode of Crash Course Physics, Dr. Shini takes us into the world of magnetism.
Hans Christian Oersted had just discovered the connection between electricity and magnetism. Meanwhile, a French physicist named André-Marie Ampère was experimenting with some wires, trying to learn more about the connection between currents and the magnetic fields they create. Ampère would discover one of the most fundamental laws of electromagnetism. This video will discuss Ampère’s Law.
In this episode of Crash Course Physics, Megneto helps Dr. Shini explain what induction is, how it works, and why magnetism is so seemingly complicated.
In this episode of Crash Course Physics, Dr. Shini talks to us about how power gets to our homes. It's kind of amazing when you think about it and much more complicated than it may seem.
This episode of Crash Course Phyics delves into the world of AC Circuits (or Alternating Currents). We’ve talked about how they change voltage, which helps transmit electricity over long distances, but there’s so much more to the physics of AC circuitry.
In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on with electric fields, so he decided to assemble a set of equations that held true for all electromagnetic interactions. In this episode of Crash Course Physics, Dr. Shini talks to us about Maxwell's Equations and how important they are to our understanding of Physics. She discusses the ray model, reflection and refraction, ray diagrams, and converging and diverging lenses.
Sunlight, moonlight, torchlight, and flashlight all come from different places, but they’re the very same thing: light. It’s what makes it possible for us to see the world around us, so it’s worth a close, hard look. For instance, how does light travel? When you flip that switch in the bathroom to brush your teeth, how does light move from the light bulb, to the mirror, and into your eyes? This video explores the ray model, reflection and refraction, diverging and converging lenses, and ray diagrams.
The way light behaves can seem very counterintuitive, and many physicists would agree with that, but once you figure out light waves it all starts to make more sense. In this episode of Crash Course Physics, Dr. Shini shows us how we know that light exists as a wave and why that's really cool.
Light is everywhere, but it’s not as predictable as you might think. It’s a wave that travels in straight lines, yet it also reflects off of surfaces, refracts through various materials, and generally changes direction all the time. We know we can bend light to our will, with lenses and mirrors, but in this video, we will explore what we can learn from light.
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, Dr. Shini talks to us about optical instruments and how they make magnification possible.
So we've all heard of relativity, right? What is relativity? How does it relate to light? Motion? In this episode of Crash Course Physics, Dr. Shini talks to us about perspective, observation, and how relativity is really weird.
What is light? That is something that has plagued scientists for centuries. It behaves like a wave and a particle. Is it both? In this episode of Crash Course Physics, Dr. Shini introduces the idea of quantum mechanics and how it helps us understand light. Also, there's this thing called the ultraviolet catastrophe.
Why is e=mc2 a big deal? What about probability? In this episode of Crash Course Physics, Dr. Shini attempts to explain a little more on the topic of quantum mechanics. She explores wave-particle duality, probability density function, and the Heisenberg Uncertainty Principle.
Chemistry can tell us how three tiny particles--the proton, neutron, and electron--come together in trillions of combinations to form everything. In this inaugural episode of Crash Course Chemistry, we start out with one of the biggest ideas in chemistry ever--stuff is made from atoms. More specifically, we learn about the properties of the nucleus and why they are important to defining what an atom actually is.
In this video from PBSLearningMedia, explore Alaska Native history and culture using the 11-minute story "Grandpa's Drum" in this episode from the PBS KIDS series MOLLY OF DENALI™. (Move the cursor over the video progress bar to locate the story at 01:00.) An old photograph sends Molly and friend Tooey on a mission to find out why Grandpa Nat no longer sings or plays his drum. As they uncover Grandpa's past, using visual clues and the internet, they understand more about their own heritage and the importance of cultural identity. As students explore the importance of diverse cultures and honoring traditions, as well as Alaska Native lives then and now, they also learn about finding and using informational texts.
In this activity from PBSLearningMedia, students follow the steps to make a paper dog sled, complete with dog team and passengers – Molly, Tooey, and Trini from the PBS KIDS series MOLLY OF DENALI™. Where will their imagination take them?
This is a novice, mid-high level Spanish listening activity in which students watch an authentic resource (McDonald's commercial) while interpreting the information provided. The activity includes a link to the commercial on YouTube and a cloze activity for students to complete while watching. Three personal connection questions are provided to allow students an opportunity to practice writing or speaking skills as they compare the gathered information to their personal lives.
In this interactive geography activity from PBSLearningMedia, students join Buster Baxter, a character from the ARTHUR television show, on a trip to Egypt. Students learn about Cairo, ancient Egypt, the pyramids, the Nile River, and relevant vocabulary terms as they travel with Buster and meet new friends. Afterward, students write about what they’ve learned in the form of a postcard to one of the Egyptian children they encountered in the videos.
Take a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together. In this video, Hank tells the story of how we went from alchemists to chemists, who understood the law of conservation of mass as proposed by a decapitated aristocrat and explains how we came to have a greater understanding of how chemical compounds work and eventually a complete understanding of what atoms and molecules are.
In this video, Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different sorts of atoms in the universe, and it has a wealth of information to tell us if we can learn to read it.
Sensitive: This resource contains material that may be sensitive for some students. Teachers should exercise discretion in evaluating whether this resource is suitable for their class.
In this video, Hank brings us the story of the electron. He describes how reality is a kind of music, discussing electron shells and orbitals, electron configurations, ionization and electron affinities, and how all these things can be understood via the periodic table.
This is a novice mid to high Spanish language activity that encourages students to interact with an authentic text and engage in conversations using travel vocabulary. In this detailed activity, students begin by playing a premade Kahoot game that encourages a review of travel-related vocabulary. Students then participate in a Spanish language Buzz Feed quiz to determine what type of things they like and dislike on vacation. Finally, students engage in interpersonal conversations about their travel styles. A Google slide presentation is provided to guide teachers through this activity.
Stoichiometry is the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers. Chemists need stoichiometry to make the scale of chemistry more understandable. In this video, Hank is here to explain why and to teach us how to use it.
In this video from PBSLearningMedia, students learn about Native American boarding schools and complete an interesting activity. This video is part of Activity Starters, which is an animated video series. In each episode, an animated character introduces a concept and an activity.
