Here's How That Annoying Fly Dodges Your Swatter

From Deep Look

Here's How That Annoying Fly Dodges Your Swatter
5 min4th5th6thScience
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Summary

A housefly sees your swat coming and escapes in a fraction of a second. Deep Look reveals how its fast eyes and quick-reacting body let it sense danger and launch away before you finish the swing.

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All ages

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Teaching resources

Discussion questions

Talk about it

A fly's eyes take in the world much faster than ours. It senses the swatter, its brain reacts, and its legs launch it away — all before you can react.

  1. Why is a fly so hard to swat?
  2. How does sensing danger quickly help the fly survive?
  3. What are the steps between the fly seeing a threat and flying away?

Quick work-a-long

Vocabulary: senses, react, information, escape.

Try it: Have a partner try to (gently) tap your hand as you pull it away. Write how fast sensing and reacting helps you — and a fly — escape.