The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes.

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 colorful, animated graphics and labels.

Viewers will see and hear nitrogen cycle used in a variety of contexts providing students with a model for how to appropriately use the term. Related words are also used and reinforced with visuals and text.

Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is atmosphere nitrogen, making it the largest source of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems.

The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition. Human activities such as fossil fuel combustion, use of artificial nitrogen fertilizers, and release of nitrogen in wastewater have dramatically altered the global nitrogen cycle. Human modification of global nitrogen cycle can negatively affect the natural environment system and also human health.

Nitrogen is present in the environment in a wide variety of chemical forms including organic nitrogen, ammonium (NH+
4), nitrite (NO−
2), nitrate (NO−
3), nitrous oxide (N2O), nitric oxide (NO) or inorganic nitrogen gas (N2). Organic nitrogen may be in the form of a living organism, humus or in the intermediate products of organic matter decomposition. The processes in the nitrogen cycle is to transform nitrogen from one form to another. Many of those processes are carried out by microbes, either in their effort to harvest energy or to accumulate nitrogen in a form needed for their growth. For example, the nitrogenous wastes in animal urine are broken down by nitrifying bacteria in the soil to be used by plants. The diagram alongside shows how these processes fit together to form the nitrogen cycle.

Nitrogen fixation
The conversion of nitrogen gas (N2) into nitrates and nitrites through atmospheric, industrial and biological processes is called nitrogen fixation. Atmospheric nitrogen must be processed, or "fixed", into a usable form to be taken up by plants. Between 5 and 10 billion kg per year are fixed by lightning strikes, but most fixation is done by free-living or symbiotic bacteria known as diazotrophs. These bacteria have the nitrogenase enzyme that combines gaseous nitrogen with hydrogen to produce ammonia, which is converted by the bacteria into other organic compounds. Most biological nitrogen fixation occurs by the activity of Mo-nitrogenase, found in a wide variety of bacteria and some Archaea. Mo-nitrogenase is a complex two-component enzyme that has multiple metal-containing prosthetic groups. An example of free-living bacteria is Azotobacter. Symbiotic nitrogen-fixing bacteria such as Rhizobium usually live in the root nodules of legumes (such as peas, alfalfa, and locust trees). Here they form a mutualistic relationship with the plant, producing ammonia in exchange for carbohydrates. Because of this relationship, legumes will often increase the nitrogen content of nitrogen-poor soils. A few non-legumes can also form such symbioses. Today, about 30% of the total fixed nitrogen is produced industrially using the Haber-Bosch process, which uses high temperatures and pressures to convert nitrogen gas and a hydrogen source (natural gas or petroleum) into ammonia.

🌠 Dive into the cosmic mystery of comets with our latest educational video, 'What is a Comet?' ✨ Perfect for Grades K-5, this engaging lesson will take your young astronomers on an interstellar journey to understand these fascinating celestial objects. 🛸 Watch now: https://youtu.be/o5Y0HPGzUN4

🚀 In this video:
Young explorers will learn the definition of a comet, discover its historical significance, and get an in-depth look at its composition. We decode the "dirty snowball" theory and traverse through the different types of comets in our vast solar system.

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💭 Spark Curiosity with Discussion Questions:
How is a comet different from an asteroid or a meteor?
What might we learn by studying comets about our own planet's history?
Why do you think comets have tails, and what causes them to have different shapes?

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Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

Common types of potential energy include the gravitational potential energy of an object that depends on its mass and its distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The unit for energy in the International System of Units (SI) is the joule, which has the symbol J.

The term potential energy was introduced by the 19th-century Scottish engineer and physicist William Rankine, although it has links to Greek philosopher Aristotle's concept of potentiality. Potential energy is associated with forces that act on a body in a way that the total work done by these forces on the body depends only on the initial and final positions of the body in space. These forces, that are called conservative forces, can be represented at every point in space by vectors expressed as gradients of a certain scalar function called potential.

Since the work of potential forces acting on a body that moves from a start to an end position is determined only by these two positions, and does not depend on the trajectory of the body, there is a function known as potential that can be evaluated at the two positions to determine this work.

There are various types of potential energy, each associated with a particular type of force. For example, the work of an elastic force is called elastic potential energy; work of the gravitational force is called gravitational potential energy; work of the Coulomb force is called electric potential energy; work of the strong nuclear force or weak nuclear force acting on the baryon charge is called nuclear potential energy; work of intermolecular forces is called intermolecular potential energy. Chemical potential energy, such as the energy stored in fossil fuels, is the work of the Coulomb force during rearrangement of mutual positions of electrons and nuclei in atoms and molecules. Thermal energy usually has two components: the kinetic energy of random motions of particles and the potential energy of their mutual positions.

Potential energy is closely linked with forces. If the work done by a force on a body that moves from A to B does not depend on the path between these points (if the work is done by a conservative force), then the work of this force measured from A assigns a scalar value to every other point in space and defines a scalar potential field. In this case, the force can be defined as the negative of the vector gradient of the potential field.

Gravitational energy is the potential energy associated with gravitational force, as work is required to elevate objects against Earth's gravity. The potential energy due to elevated positions is called gravitational potential energy, and is evidenced by water in an elevated reservoir or kept behind a dam. If an object falls from one point to another point inside a gravitational field, the force of gravity will do positive work on the object, and the gravitational potential energy will decrease by the same amount.

Consider a book placed on top of a table. As the book is raised from the floor to the table, some external force works against the gravitational force. If the book falls back to the floor, the "falling" energy the book receives is provided by the gravitational force. Thus, if the book falls off the table, this potential energy goes to accelerate the mass of the book and is converted into kinetic energy. When the book hits the floor this kinetic energy is converted into heat, deformation, and sound by the impact.

The factors that affect an object's gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in. Thus, a book lying on a table has less gravitational potential energy than the same book on top of a taller cupboard and less gravitational potential energy than a heavier book lying on the same table. An object at a certain height above the Moon's surface has less gravitational potential energy than at the same height above the Earth's surface because the Moon's gravity is weaker. "Height" in the common sense of the term cannot be used for gravitational potential energy calculations when gravity is not assumed to be a constant. The following sections provide more detail.

The lunar phase or phase of the Moon is the shape of the directly sunlit portion of the Moon as viewed from Earth. The lunar phases gradually and cyclically change over the period of a synodic month (about 29.53 days), as the orbital positions of the Moon around Earth and of Earth around the Sun shift.

The Moon's rotation is tidally locked by Earth's gravity; therefore, most of the same lunar side always faces Earth. This near side is variously sunlit, depending on the position of the Moon in its orbit. Thus, the sunlit portion of this face can vary from 0% (at new moon) to 100% (at full moon). The lunar terminator is the boundary between the illuminated and darkened hemispheres.

Each of the four "intermediate" lunar phases (see below) is around 7.4 days, but this varies slightly due to the elliptical shape of the Moon's orbit.

In western culture, the four principal phases of the Moon are new moon, first quarter, full moon, and third quarter (also known as last quarter). These are the instances when the Moon's ecliptic longitude and the Sun's ecliptic longitude differ by 0°, 90°, 180°, and 270°, respectively.[a] Each of these phases occur at slightly different times when viewed from different points on Earth. During the intervals between principal phases, the Moon's apparent shape is either crescent or gibbous. These shapes, and the periods when the Moon shows them, are called the intermediate phases and last one-quarter of a synodic month, or 7.38 days, on average. However, their durations vary slightly because the Moon's orbit is rather elliptical, so the satellite's orbital speed is not constant. The descriptor waxing is used for an intermediate phase when the Moon's apparent shape is thickening, from new to full moon, and waning when the shape is thinning.

When the Sun and Moon are aligned on the same side of the Earth, the Moon is "new", and the side of the Moon facing Earth is not illuminated by the Sun. As the Moon waxes (the amount of illuminated surface as seen from Earth is increasing), the lunar phases progress through new moon, crescent moon, first-quarter moon, gibbous moon, and full moon. The Moon is then said to wane as it passes through the gibbous moon, third-quarter moon, crescent moon, and back to new moon. The terms old moon and new moon are not interchangeable. The "old moon" is a waning sliver (which eventually becomes undetectable to the naked eye) until the moment it aligns with the Sun and begins to wax, at which point it becomes new again. Half moon is often used to mean the first- and third-quarter moons, while the term quarter refers to the extent of the Moon's cycle around the Earth, not its shape.

When an illuminated hemisphere is viewed from a certain angle, the portion of the illuminated area that is visible will have a two-dimensional shape as defined by the intersection of an ellipse and circle (in which the ellipse's major axis coincides with the circle's diameter). If the half-ellipse is convex with respect to the half-circle, then the shape will be gibbous (bulging outwards), whereas if the half-ellipse is concave with respect to the half-circle, then the shape will be a crescent. When a crescent moon occurs, the phenomenon of earthshine may be apparent, where the night side of the Moon dimly reflects indirect sunlight reflected from Earth.

In this video, we'll be exploring different forest habitats to learn about the plants and animals that live there. We'll start off in a tropical rainforest, and then move on to a coniferous forest, a deciduous forest, and finally a forest habitat made up of mixed hardwood and coniferous trees.

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🌲 Welcome to "Exploring Forest Habitats"! 🌳 In this educational journey, we delve into the heart of diverse forests, unveiling the secrets of these incredible ecosystems. 🍃 Get ready to discover the enchanting world of flora and fauna that thrives in the midst of towering trees.

🌿 Our exploration begins with an introduction to different types of forests, including rainforests, deciduous, and coniferous forests. 🌳 Learn about the unique characteristics that set each one apart and the fascinating adaptations of plants and animals to their specific habitats.

🦉 Meet the inhabitants of the forest as we delve into the captivating lives of forest mammals, birds, insects, and reptiles. 🐾 From the majestic roars of forest mammals to the melodic chirps of forest birds, witness the symphony of nature in action. 🦋 Explore the intricate world of forest insects and the often overlooked realm of forest reptiles.

📚 Throughout the video, we'll introduce you to essential vocabulary words such as "fauna," helping to build a solid foundation for understanding the complex web of life within the forest ecosystem.

🔍 Don't miss the opportunity to expand your knowledge and appreciation for the natural world. Subscribe to our YouTube Channel [@HarmonySquare] for more engaging and educational content.

📝 For educators and parents, enhance the learning experience by downloading our comprehensive lesson plans, worksheets, and activities at www.harmonysquarelearning.com. 🍎

🌐 Join us on this educational adventure, and let's explore the wonders of forest habitats together! 🌲🦉🌳

#forestexploration #ecosystemeducation #naturediscovery #educationforall #wildlifewonders #harmonysquarelearning #scienceeducation #faunafascination

MM3718

Join us on a fascinating journey through the skies with our educational video "What is Weather? Learn About the Components of Weather" 🌥️ – Perfect for curious minds in grades 3 to 8!

This engaging and informative video will take students on an exploration of the atmosphere to discover the elements that come together to create the weather patterns we experience daily.

Learning Objectives:

Understand the Fundamentals: Students will learn the basic components of weather, such as temperature, humidity, precipitation 🌧️, and wind 🌬️, and how they are measured.

Discover the Causes: The video will explain how different factors like the sun 🌞, the earth's rotation 🌍, and geographical features work together to cause various weather conditions.

Observe and Predict: Students will be encouraged to observe weather patterns and learn the basics of weather forecasting to make predictions about future weather conditions.

By the end of this video, students will have a clearer understanding of what weather is and what causes it, laying the groundwork for future scientific explorations. Enjoy the adventure into the world of weather! 🌈

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Timestamps:
00:00 Introduction
01:00 Understanding the Fundamentals
03:30 Discovering the Causes
06:00 Observing and Predicting Weather Patterns
08:30 Conclusion

Hashtags: #weathereducation #scienceforkids #weatherforecasting #educationalvideo #harmonysquarescience thank you for watching, and we'll see you in the next video!

When children learn colors, it is so much fun! These fun and educational videos teach colors for kids. These videos are ideal for use in school classrooms and home classrooms. ESL learners learn from and enjoy the videos too. Each video teaches a different color such as green, red, blue, yellow, and orange!

00:00 Start
00:08 - Orange
02:15 - Blue
04:10 - Green
06:30 - Yellow
08:29 - Red

Learning the names of colors and correctly identifying colors is one of the first academic skills that young preschoolers and kindergarteners learn. When children learn to name colors, they effectively describe objects in their environment. But knowing colors is more than that. When children learn colors, they can compare and contrast things in the child’s environment as well as use color to sort and classify objects.

The color videos from Kid’s Academy are perfect for teaching different colors. The videos are the appropriate length for young learners and simply explain what the different colors are and what the colors look like. The clips show our favorite elephant character on a different color adventure in each video. In the videos, the student sees examples of objects of each color. The color and color word are clearly stated and repeated often so that the learner remembers and pronounces the color name correctly.

When teaching colors for children, teachers and parents have the opportunity to extend the learning after viewing the videos. Ask your student or child to name other foods that are orange, red, blue, green or yellow. Identify objects in the home and classroom and name their color. And children cannot resist painting and drawing with these colors. Older students learning to write and spell color words benefit from writing the color words learned from the videos too!

Identifying colors for children is fun and an important milestone in a child’s early learning. With these clips, children learn quickly to identify and name each color. School and home classrooms can use these videos as a visual aid to assist young children with color mastery and provide fun and entertainment while learning.
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Hi, this is Kids Academy and this is our kids' videos that can help your kids to know how to play chess correctly. And in this video for kids, we will show how:
How do Chess Pieces Move and Capture?
How do the pieces move?
How do the pieces attack?

00:00 - Start
00:08 - Rook
08:56 - Bishop
15:45 - Queen
20:38 - Knight
29:33 - Pawn
38:09 - King

Chess for Kids - Kids Academy

#talentedandgifted #learnwithkidsacademy kids Academy Talented and Gifted Program for kids aged 2-10:

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It's Kids Academy and welcome back to our channel! Cats are some of our favorite pets. We play, spend time with them and become good friends. They are good companions with many remarkable qualities. In this video you will learn more about cats, their habits, behavior and appearance! Enjoy your viewing!

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6 kalimas
Reciter Aqsa Abdul Haq
Audio : ZDS
Video :Aqsa Abdul Haq Production


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Watch more I Look, I See Animated Series https://www.youtube.com/playli....st?list=PLEb6p9WNvvc
Listen to Muhammad Sulaiman (Yusuf Islam's grandson) sing the popular song in praise of our Mothers, 'Your Mother' written by Yusuf Islam.

Abu Huraira reported that a person came to the Prophet Muhammad (peace be upon him) and asked : Who among the people is most deserving of a fine treatment from my hand ? He said : Your mother. He again said : Then who? He said: Again it is your mother. He said: Then who? The Prophet (peace be upon him) said : Again, it is your mother. He (again) said: Then who? Thereupon he said: Then it is your father.

Lyrics:
Who should you give your love to
Your respect and your honour to
Who should you pay good mind to – after Allah,
Comes your Mother,
Who next? Your Mother
Who next? Your Mother
And then your Father

Cause who used to hold you
And clean you and clothe you?
Who used to feed you
And always be with you?
When you were sick, stay up all night,
Holding you tight?
That’s right no other, your Mother

Who should you take good care of
Giving all your love?
Who should you think the most of – after Allah?
Comes your Mother,
Who next? Your Mother
Who next? Your Mother
And then your Father

Cause who used to hear you
Before you could talk?
Who used to hold you
Before you could walk?
And when you fell, who’d pick you up?
Clean your cut?
No one but, your Mother, your Mother

Who should you stay right close to
Listen most to?
Never saying no to – after Allah
Comes your Mother,
Who next? Your Mother
Who next? Your Mother
And then your Father

Cause who used to hug you
And buy you new clothes?
Comb your hair and blow your nose?
And when you cried who wiped your tears
Knows your fears? Who really cares?
Your Mother

Say Alhamdulillah,
Thanks to Allah
Thank You Allah for my Mother

Your Mother
Written by Yusuf Islam and performed by Muhammad Sulaiman

Concept Design, Script & Supervision: Yusuf Islam, Merve Cirisoglu
Animation Direction & Character Design: Merve Cirisoglu
I Look I See Series Project Manager: Majid M. Hussain
Production Manager: Azmir Mutalib
Production Studio: Little Critters Workshop (Malaysia)
Music, SFX Editing & Mix: Felipe Gutierrez
Sound Supervision: Pablo Gutierrez
Sound Design: Gonzalo Matijas, Nahuel Palenque, Pablo Gutierrez
Drum Programming: Benammi
I Look, I See Sonic Signature: Benammi

I look, I See Animated Series supported by the Yusuf Islam Foundation

Special Thanks: Eza Basri, Walid Omar & the team at Little Critters Workshop, Muhammad Sulaiman Hussain, Imran Husain

Mountain of Light is a non-profit organisation founded by Yusuf Islam / Cat Stevens in 1994. Producing spiritual audio and visual content on Islam and spirituality.

Find out more:
Website: https://catstevens.com/think/
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LISTEN:
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CHARITY:
Peacetrain is a charity initiative by the Yusuf Islam Foundation under the patronage of Yusuf / Cat Stevens with an emphasis on feeding programmes, solar water wells and peace building projects https://peacetrain.org/.

#ilookisee #yusufislam #mothersday

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Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and start learning in the most entertaining way.

Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and start learning in the most entertaining way.

Discover hundreds of never-before-seen resources! Create your free account at https://my.happylearning.tv/ and start learning in the most entertaining way.

Learn with us about plants and how they grow.

Learn about the different plants that exist in the world!

Do you know how many public utilities exist? Learn with us each of them in a fun way!

Do you know how important nutrition is for our organism? Thanks to it, we have energy! Find out more with the video.

Learn how to classify the different nutrients and the benefits they bring to our body.