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🔬 Science - Class 8
Unit 11 · Earth and Universe

Asteroids Presentation

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Science and Technology, Class 8: Earth and Universe

Asteroids

Small bodies that circle the Sun · No definite shape · Enormous in number

What We Will Know by the End

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What an asteroid is and what its orbit is like

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Where the asteroid belt and the Kuiper belt lie

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How to tell Trojans from near-Earth asteroids

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The shape, size and make-up of asteroids

Definition
Three Tests for an Asteroid
SUN
It goes round the Sun, not round a planet.
SMALL
It is a celestial body far smaller than a planet.
SHAPE
It has no definite shape.

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Presenter notes: Today we meet a family of bodies far smaller than a planet but far greater in number. Ask the class first whether planets are the only things that go round the Sun.