Mon Prof Augmenté
Funnel from a tilted spin
Open to everyone until Monday, September 28
To keep it, print it while it is open.
Inside a severe storm, winds can rotate around a horizontal axis. A strong rising warm current tips that rotation upright, and the spinning column becomes a funnel.
In the picture
- Horizontal tube of spinning air with curved arrows winding around it
- Rising warm current, shown as upward arrows from the ground
- Tilted spin turned upright into a narrow dropping column
- Ground contact where dust and debris swirl at the base
Examples
- A dust devil sweeping across a dry field
- Bathwater draining as a spinning column
Key takeaways
- The rotation must be tipped from horizontal to vertical for a funnel to form.
- The rising warm current supplies both the tilt and the lift.
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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