The amount of space a substance occupies.
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The basic structural and functional unit of life.
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A very small unit of length equivalent to one ten-millionth of a millimetre, or 10^-10m.
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The name that we give to our own Galaxy.
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The speed of an object in a particular direction.
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Animals with bony spinal columns or backbones, a spinal cord, and a skull enclosing the brain and eyes.
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A large cauldron-like volcanic feature, formed when a chamber full of magma empties and the ground above it collapses.
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The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation.
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The outer atmosphere of the sun. A thin, extremely hot plasma - over a million degrees celsius, compared to around 6000 degrees for the visible surface.
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The physical separation of a solid from a fluid carrier, either gas or liquid, by passing it through a medium that blocks particles above a certain size.
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A quantity that has both magnitude, or size, and direction.
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Discover the amazing world of the heart, how hard it works to pump blood around your body, and how ours compare to other animal's hearts.
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Biology - Human Body - L
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rning Points.
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A self-sufficient celestial body that is in orbit around a star.
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The number of particles in 1 mole of a substance, which is 6.022 times 10 to the power of 23.
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How the millions of nerves in the spinal cord help the brain and body communicate.
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Biology - Being Human - L
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rning Points.
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Open a discussion on what has been already learnt...

The shortest distance between an object's start point and end point.
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When the Moon is aligned directly in between the Sun and the Earth, it obscures all or part of the sun to an observer on the ground.
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A quantity that has magnitude, or size, but not direction.
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Electromagnetic radiation in the region of the spectrum between visible light and x-rays, about ten to 400 nanometres in wavelength.
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Discover how different materials react to heat, and why this can be both useful and dangerous. Physics - Energy And Radioactivity - Learning Points. Temperature affects the size and shape of an object due to the expansion and contraction...

What is a satellite, why are they important, and how have satellites changed our understanding of the Solar System? Physics - Universe - Learning Points. Any object orbiting a planet is called a satellite. Moons are examples of natural...

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...

The Moon holds Earth in place and dictates our seasons. What happens to planets without a moon like ours? Physics - Our Solar System - Learning Points. The Moon formed after Earth collided with its twin, Theia. In proportion to the size...

How big is our Universe? Travel from Earth through the Solar System, past our Galaxy, to the Universe beyond. Physics - Universe - Learning Points. The Universe is constantly expanding. The Universe is already billions of light years...