This video provides a clear and concise explanation of veins, their function, and their role in the circulatory system. It discusses the differences between veins and arteries, the presence of valves, and why veins may appear blue under...

Tell time in minutes and hours.

A countdown of the top 5 solar discoveries from the Sun-Earth Connection Education Forum. These include the discoveries of sunspots, the solar cycle, the heliosphere, aurora formation, and space weather.



Number 4 in the Top 5...

How, when, and where wildfires happen, with a focus on safety. Wildfires need fuel and heat, so they can happen in any dry place. They are a natural part of Earth and they do have benefits. Most are caused by human activity. Wildfires...

The video explains the process of cell division and the importance of chromosomes and mitosis in the growth and repair of cells in animals and humans. It begins by introducing the concept of cells dividing in stages called the cell...

You can reduce your own contribution to climate change by reducing the amount of carbon dioxide you release into the atmosphere. Your carbon footprint is measured by the amount of extra carbon dioxide your lifestyle adds to the...

Lesson on the urea cycle, how it functions, how it removes nitrogenous waste such as ammonia/ammonium and what regulates the urea cycle.



In this lesson you w

ill learn:

Wha
t is the urea cycle?
Reg
ulation of...

Bo teaches us about beat frequency. You get to hear what beats sound like, see the constructive and destructive interference wave forms, and learn a practical application of beats while tuning a guitar.

Frequency, f, is defined and related to Period, T. Two demonstrations are shown and frequency solved for.

As you know a solar eclipse occurs when the moon is placed between the earth and the sun. But, if the moon takes about 28 days to travel around Earth...

Why don’t we see eclipses every m
onth?
"Eclipse" comes from the Greek...

The number of sunspots increases and decreases over time in a regular, approximately 11-year cycle, called the sunspot cycle. The exact length of the cycle can vary. It has been as short as eight years and as long as fourteen, but the...

We get energy by eating other organisms, but plants don't have to do that. They can build their own food out of water, carbon dioxide, and sunlight. I'm sure you've heard of photosynthesis before, but let's take a look at some of the...

In this episode we examine the topic: Who was the Buddha?

An animated explanation of how eclipses work. As you know a solar eclipse occurs when the moon is placed between the earth and the sun. But, if the moon takes about 28 days to travel around Earth, why don’t we see eclipses every month?

Here's an exciting way to learn important facts and get ready for a life science test! In this episode we'll be looking at fruits and seeds.

This video explains the concept of bubble sort.
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This clip is from the chapter "Algorithm: Sorting Elementary" of the series "Data Structures and Algorithms: The Complete Masterclass".This section introduces you to sorting...

What is known about sunspots? How does the sun and the magnetic field affect each other? The Powerhouse Sun, Part 2

Beating technology addiction could have a lot to do with the tech-posture cycle.

This live-action video program is about the term nitrogen cycle. The program is designed to reinforce and support a student's comprehension and retention of the term nitrogen cycle through use of video footage, photographs, diagrams and...

This is a lecture presentation on feeding relationships in ecosystems. The presenter discusses the interdependence of different organisms in a community and the consequences of a change in that community. Using a specific community as an...

Why do we sleep? Most people would say that it's because our bodies need to rest. And that's part of it, but is that the whole truth? What about dreaming? What is that, why do we do it, and what do they mean? Let's get a closer look at...

Jenny Graham holds the Guinness World Records title for being the fastest woman to circumnavigate the world by bike. In this video, she shares her journey, challenges, and experiences, highlighting her love for endurance cycling and the...

"Water, Water Everywhere!" is Episode 2 in the six-part series "Tides of Change", exploring amazing NASA ocean science to celebrate Earth Science Week 2009.



Water is all around us, and its importance to nearly every natural...

It explains the three states of water and talks about the steps involved in a water cycle.