What do a lava lamp, bottle, and (some birds) have in common?
Here is a look at how the sun heats the ground, then our atmosphere,. and the birds that take advantage of warm air bubbles to fly easier.
Materials: Lava Lamp (not needed)
2 Litere bottel
*It’s much easier to do demonstrations in person. But if this works, I will continue to show stuff to your kids.