Download Time for B`s principle pre-quiz! (Anticipatory Set) 1. As the

Time for B’s principle pre-quiz!
(Anticipatory Set)
1. As the speed of a fluid increases so does the
pressure.
2. During Aircraft flight three forces work on the
plane.
3. You spell Bernoulli B-E-R-N-O-U-L-I
4. There is more pressure on the top of a wing than
the bottom.
5. The air resistance on a plane is called lift.
6. Airplane wings are not designed to use B’s
principle.
What is Bernoulli’s Principle?
By: Kortney Hungelmann-Skiba and Billy Sanborn
Vocabulary
► Bernoulli’s
principle states that as the speed of fluid
increases, it’s pressure decreases.
► So
when it is poring out, you can’t feel it as much
as when it is just drizzling out.
Example
(Guided practice)
 Get in to your groups:
Group 1. 21, 3, 20, 19. Group 2. 5, 2, 1, 25.
Group 3. 9, 17, 10, 22. Group 4. 7, 16, 13, 15.
Group 5. 24, 12, 4, 26. Group 6. 18, 8, 11, 6.
 Send a getter up to the table to receive the materials
(bottle of water and green tray).
 Each person should slowly dump a little water on your
hand. After that each person should dump a little more
water on their hand, just faster. Observe the pressure
each dump puts on your hand. According to Bernoulli’s
Principle when you slowly dump the water it should put
more pressure on your hand than when you dump the
water really fast.
 Your group has 10 minutes!
Bernoulli’s principle in relation to flight
Airplane wings are designed
to use Bernoulli’s principle. Air flows
over the top and the bottom of the
wings. Since airplane wings are
curved at the top, the air that goes
over the wing speeds up. The air
pressure at the bottom of the wing
pushes up (this is lift). This helps the
plane stays in the air.
According to Bernoulli’s
principle there is less pressure at the
top of the wing than the bottom.
Bernoulli’s principle in relation to flight part 2
►
►
►
►
There are three forces that help make the
plane fly during aircraft, lift, thrust, drag.
The force at the bottom of the planes
wings is called lift. This force pushes the
wings ups. In regular flight the lift is equal
to the weight of the plane.
Thrust is the forward force on the plane.
When the plane picks up speed the air
that flows around the wings helps it stay
in the air. The planes engine also provides
thrust.
Drag is the force of air resistance over
the wings, this slow the plane down.
Airplane designers use the streamlining
process this process reduces drag.
There for there is less pressure on the top of the wing than the
bottom of the wing because the air on the top goes faster than
the air on the bottom. This causes the plane to rise!
Time for B’s principle post-quiz!
(Assessment)
1. As the speed of a fluid increases so does the
pressure.
2. During Aircraft flight three forces work on the
plane.
3. You spell Bernoulli B-E-R-N-O-U-L-I
4. There is more pressure on the top of a wing
than the bottom.
5. The air resistance on a plane is called lift.
6. Airplane wings are not designed to use B’s
principle.