How can I teach the difference between meteoroid, meteor and meteorite?
Teach them as three stages of one journey: in space, in the sky and on the ground. Actions, diagrams and simple memory tricks help pupils remember.
These three words are easily confused, and getting them right is a foundation for everything else.
The journey idea. Present them as stages of a single object's journey: - Meteoroid: the object in space, a small rock or dust grain orbiting the Sun. - Meteor: the streak of light seen in the sky as it enters Earth's atmosphere and heats up. A meteor is light, not a solid object. - Meteorite: any piece that survives to land on the ground.
Memory tricks. The 'oid' in meteoroid sounds like 'void', the emptiness of space. The 'ite' in meteorite rhymes with 'bite': you could hold one, though you should never bite it! Meteor is the short word, like the short flash.
Actions. Pupils stand up with hands high for meteoroid, sweep an arm across with a 'whoosh' for meteor, and crouch to touch the floor for meteorite. Call out words in random order to reinforce them.
Diagram. Pupils draw a three-part picture: space with a rock, the sky with a streak of light, and the ground with a stone. They label each correctly.
Related words. Older pupils can add fireball, a very bright meteor; bolide, an exploding fireball; asteroid, a larger body; and micrometeorite, a tiny meteorite.
Check. Ask pupils to correct statements such as 'I saw a meteorite in the sky last night' or 'There's a meteor in the museum'. Correcting mistakes in sentences shows whether they truly understand the words.
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