Mon Prof Augmenté
Bat Ears and Echoes
Open to everyone until Monday, September 28
To keep it, print it while it is open.
Bats make high squeaks that people cannot hear. The squeaks bounce off things, and the bat listens to the returning echoes to find its way.
In the picture
- Open mouth: sends out a high squeak.
- Moth body: reflects the squeak back toward the bat.
- Large ear: catches the returning echo.
Examples
- A ship using sonar to find the sea floor.
- A shout in a canyon coming back as an echo.
Key takeaways
- Bats hear very high sounds that human ears miss.
- They use reflected sound to locate objects in the dark.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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