What

1
Whats Going On?
When bubbles rise, water is falling down around
them, pushing them up
Larger bubbles more water pushing the bubbles
up
4.
5.
so they rise faster!
the water pushed up is the SAME SIZE as the
bubble
3.
AIR
Air bubbles push the water level up
air
2.

1.
Bubble push
water level is low
Same size
BIG Bubble
little Bubble
2
Water Level
3
Whats Going On?
What about
the Flying Saucer?
You know that if you push water behind you
with a large force, you can swim upstream,
even if the current is flowing against you
If the air hits the saucers edge just
right, the air swings around the edge with a
large force because of
1.
2.
air
Aerodynamics
If the saucer is far away
But up close
And the saucer floats!
not much air pushed down
LOTS of air pushed down
Air swings around the edge with such a strong
force that it overcomes the fan and floats the
saucer
large force
3.
This is the Bernoulli Effect