ACT Preparation / Unit 21 ACT 2003 short lesson, about 20 seconds
Models
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The idea
A scientific model is a simplified representation of how something works, built to explain observations and make predictions. No model is perfect, but an imperfect model can still be useful.
In practice
A lake model tracking only temperature and oxygen can still predict when fish are stressed.
Where people slip
Judge a model by what it explains and predicts, and by the shortcomings it reports.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- Nothing yet depends on this.
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