Sciencespeaking topic
Why does a leaf fall to the ground but the Moon doesn't? Actually both are constantly falling; the Moon is just moving sideways so fast that as it falls it keeps missing the Earth. Is an orbit forever 'missing the fall'?
— orbital mechanics / free fall
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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