Series: Earth & Space Sciences
Over 50 years of exploration has revealed a great deal about the red planet. This video details how Mars' rich atmosphere and water supply gradually diminishes, evaporated by the power of it's parent star—the Sun.
For the first time in NASA's history, a comet collides with Jupiter over the course of six days.
Rocks and minerals have been around since before human beings existed. Since the origins of the human race, we have used them in many diverse ways - from construction to jewelry. But where do they come from? How do they form? And what is the difference between a rock and a mineral? This video explains that we live on a planet compost of rocks. Students will learn the difference between minerals and rocks, they will discover the different types of rocks and how they are formed in the cycle of the rocks. Show Less
This video defines and discusses human and natural pollutants of air and their sources.
Objective: To learn about different methods used for sewage disposal. Learning outcomes - students will be able to: 1. Recognise sewage 2. Describe different methods used for sewage disposal 3. Describe the working process of septic tank 4. Explain working and uses of a biogas plant 5. Demonstrate the process of vermicomposting and its uses Show Less
Over thousands of years, humans have developed our understanding of the stars and planets through the twin sciences of astronomy and cosmology. This video takes viewers through the history of humans studying the skies, exploring the links between gods and early astronomy, the debate over geocentrism and heliocentrism, and how an understanding of gravity was key to modern astronomy. Recommended for students interested in technology and the careers that contribute to space exploration. Show Less
Visible light, which can be seen with our eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses an array of radio telescopes to detect and study radio waves from space. Radio telescopes are typically large parabolic dish antennas used singly or in an array. Radio observatories are preferentially located far from major centres of population to avoid electromagnetic interference (EMI) from radio, TV, radar, and other EMI emitting devices. This is similar to the locating of optical telescopes to avoid light pollution, with the difference being that radio observatories are often placed in valleys to further shield them from EMI as opposed to clear air mountain tops for optical observatories. ALMA is an advanced tool for studying very old stars and galaxies. These objects now are seen at great cosmic distances, with most of their light stretched out to millimetre and sub-millimetre wavelengths by the expansion of the universe. ALMA provides the unprecedented ability to study the processes of star and planet formation. Unimpeded by the dust that obscures visible-light observations, ALMA will be able to reveal the details of young, still-forming stars, and is expected to show young planets still in the process of developing. In addition, ALMA will allow scientists to learn in detail about the complex chemistry of the giant clouds of gas and dust that spawn stars and planetary systems. Show Less
The majority of today’s astronomers and scientists support the theory we call the Big Bang. But what does the theory actually entail? How did it develop? Who was Edwin Hubble and what are spectral lines? In this film, we explore the background of the Big Bang theory. Was it really a bang? What different substances and particles were formed right after the Big Bang? We will explore these things. We will also find out how nebulas, stars, planets and solar systems were created. And finally, we will learn what evidence exists that supports this theory. What evidence is there that the Big Bang theory could be true? Show Less
With stunning footage shot in the Candian tundra, ths title identifies and explores the physical and human factors, including climate change, that affect carbon and water cycles in the tundra We see the research and monitoring techniques scientists are using to identify and record these changes and look at the reasons this data is gathered. The resource shows how these same techniques can be used by students as part of their own fieldwork investigations. Show Less
Filmed in the Amazon and Borneo, this resource illusrates and explains the key environmental and land use changes occurring in tropical rainforests and explores the effect they're having on the carbon ad hydrological cycles. We accompany scientists up flux towers as they monitor CO2 emissions and find out why they're digging soil pits to examine decomposition rates. A fantastic case study to deepen students' understanding of carbon and water cycles. Show Less
The Cassini space mission was imperative to uncovering the rings and natural satellites of Saturn. Its journey through space remains fundamental to space exploration.
This video explains which of the atmosphere's chemical components are responsible for the aurora borealis.
On a full moon, when the Moon passes directly behind the Earth into its shadow, a lunar eclipse occurs. When the moon is entirely within the umbra, it causes a total lunar eclipse. When only a small part of the Moon’s surface is covered by the umbra, a partial lunar eclipse occurs. Show Less
Change in weather differs from place to place and time to time. The part of the earth facing the sun has day and the other part has night. The sun causes the wind to blow and also changes the state of water from water to water vapour.
As Mars's water systems completely evaporate, its temperature also undergoes a drastic transition.
This Miniclip defines climate change and explains the greenhouse effect and the role of greenhouse gases in our atmosphere. While it explores the consequences of climate change on our environment – such as rising sea levels, more frequent extreme weather, and damage to our ecosystems – it also suggests both big and little changes that we can make to protect our Earth. Show Less
Objective: To learn about natural resources, coal, the destructive distillation of coal, the importance of natural gas, the origin of petroleum and about petroleum refining. Learning outcomes - students will be able to: 1. Classify natural resources 2. Describe the importance of renewable and non-renewable natural resources 3. Discuss the prevention of non-renewable natural resources 4. Explain coal 5. Describe the process of formation of coal 6. Discuss types of coal and uses of coal 7. Explain the destructive distillation of coal 8. Explain the formation of natural gas inside the earth’s crust 9. Outline the importance of natural gas 10. Discuss various uses of natural gas 11. Define petroleum 12. Discuss the formation of petroleum 13. Know the uses of petroleum 14. Explain the process of refining petroleum 15. Discuss the different fractions of petroleum in the petroleum refining 16. Describe the uses of petrochemicals Show Less
In this video, students will learn about the consequences of the Earth’s rotation and how it impacts time zones.
This unit introduces concepts such as water as a limited resource and water footprints; explaining to students what the impact on the environment of the production of goods has.
A group of stars which form a pattern is called a constellation. The Ursa Major and Ursa Minor has seven bright stars arranged in the form of a spoon. The Orion has seven bright stars and forms the picture of a hunter. The Scorpius has thirteen bright stars and forms the shape of a scorpion. In the Cassiopeia, there are five prominent stars that, along with other stars, form the image of the Egyptian queen Cassiopeia. Show Less
Pollution refers to the addition of harmful substances into our surroundings. These harmful substances causes harm to all living beings. We must follow the step that are taken to control the different types of pollution.
Using drama skits and animated computer graphics, this program explores the cycles and seasons that dictate life on earth, and answers the following questions: Why do we get day and night? What are seasons and why do they change? Why does the moon change shape? What causes tides? Show Less
The Cassini spacecraft makes its final journey into Saturn.