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A question that can lose

What makes a question scientific?

Today you'll discover

  • the one thing a scientific question must risk
  • why 'is gravity strong?' is not one
  • how to sharpen a question until it can fail

Think firstTwo questions about a falling ball

Which question could a measurement actually prove wrong?

Decide first, then press Next. The ring lights up where the loop begins.

A ring of eight boxes with arrows between them: question, hypothesis, safety review, plan, collect data, analyse, conclude, communicate, with a dashed arrow closing the ring. After a prediction, the question box is named, then the hypothesis box. The last step asks which version of a pendulum question is testable.

See the whole ideathe big idea and the key word, in one place

The big idea

A scientific question is one a measurement could prove wrong.

Compare them'Is gravity strong?' cannot lose. 'Does it fall at 9.8 m/s², within 5 %?' can. Only the second is a question an experiment can answer.

Key word

testable
a question or claim that names something a measurement could contradict

Ready to use it?

  • Rewrite a vague question so that a measurement could prove it wrong.
Practise this idea