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Mass - Matter Measurement
A measure of how much matter an object contains, in units of grams or kilograms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Nucleus (chemistry)
In an atom, the small, dense, positively charged structure at its centre, containing the protons and neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Gravity - Attractive Force of Mass
An attractive force that acts between all matter that has mass, and is proportional to mass. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Monomer
A small molecule that can chemically bond in chains or groups to other similar molecules, to form larger molecules called polymers. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Biomass
The total mass of living organisms in an area or ecosystem. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Mercury
Where does Mercury fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Mercury is the smallest planet in our Solar System. Mercury is the closest planet to the Sun. Mercury has the...
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Jupiter
Where does Jupiter fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Jupiter is the 5th planet from the Sun. Seventy-nine moons orbit Jupiter. Jupiter's core is hotter than the...
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Uranus
Where does Uranus fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Uranus is the 7th planet from the Sun. Each of Uranus's 27 moons is named after a Shakespearean character....
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Isotopic mass
The mass of 1 atom of a specific isotope of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
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Nebula
A cloud of gas and dust in space. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
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Scalar
A quantity that has magnitude, or size, but not direction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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Centripetal Force: How Central Forces Cause Objects to Spin or Turn
What are central forces and how do they make objects spin or turn? Physics - Forces - Learning Points. A centripetal force makes an object follow a circular path. The moment of inertia is the resistance of an object when the speed of...
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Phlogiston and Oxygen
How French Chemist Antoine Lavoisier revealed the true significance of oxygen and brought about the birth of modern chemistry. Chemistry - Periodic Table - Learning Points. Antoine Lavoisier experimented with weighing substances before...
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Hot Air Balloons
Hot air balloons rely on heat alone to keep them in the sky. How does this work? Physics - Energy And Radioactivity - Learning Points. Hot air rises in cool air because it is less dense. The hot air within a hot air balloon creates the...
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The Elements: Hydrogen
Hydrogen is a highly flammable element, with the potential to become a non-polluting alternative to gasoline. Chemistry - Periodic Table - Learning Points. Hydrogen is the element with the lowest density. Hydrogen is highly flammable and...
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Shoemaker-Levy
The collision of comet Shoemaker-Levy 9 with Jupiter in 1993 was the first collision of its kind to be witnessed by man. Physics - Universe - Learning Points. The comet Shoemaker-Levy 9 was discovered orbiting Jupiter in 1993....
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Oxygen and Combustion
Combustion reactions are vital: from keeping us warm and cooking our food, to providing electricity and propelling rockets into outer space. What do we know about these chemical reactions? Chemistry - Reactions - Learning Points....
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Making a Star on Earth
Large-scale nuclear fusion is one of the ultimate goals of science which has yet to be achieved. How does nuclear fusion work and is a future likely in which we can reproduce the power of a star on Earth? Earth Science - Earth's...
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Killer Heat Wave
Heat waves form when an area of high pressure becomes stationary over a region. The heat wave that struck Chicago brought hot sunny tropical weather, but its effects were devastating. Earth Science - Weather - Learning Points. A heat...
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Ocean Conveyer
A super-current runs from the Arctic past South America to the Indian Ocean. This is major factor influencing our climate, controlling everything from currents to the weather. Earth Science - Human Impacts - Learning Points. The great...
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Black Holes
Discover how dying stars transform into black holes, areas of mass so great that even light can't escape. Physics - Universe - Learning Points. When a star dies, it collapses and condenses into a single point, known as a singularity. The...
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The Incredible Strength of Ants
Why are tiny ants considered the strongest creatures in the world? An introduction to the square-cube law and why muscle mass (length3) will always outstrip strength (length2). Maths - Number A Twig Math Film....
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Heavy Water
Why did allied soldiers in World War Two embark on a dangerous mission to stop the Nazis using heavy water? Chemistry - Atoms And Bonding - Learning Points. Atoms that have the same number of protons and electrons but different numbers...
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Nuclear Weapons
How the principles of nuclear physics have been used to unleash massive destruction. How do fission bombs and thermonuclear bombs work, and what are the differences between the two? Physics - Energy And Radioactivity - Learning Points....