Home » Science Projects » Science Project on “Suction, Air Pressure and Lift”, Project Experiment Topics on Flight, Motion & Friction for Class 8, 9, 10 and 12 Students.

# Science Project on “Suction, Air Pressure and Lift”, Project Experiment Topics on Flight, Motion & Friction for Class 8, 9, 10 and 12 Students.

Suction, Air Pressure and Lift

Materials Required:

1. A doorway
2. Two thumbtacks
3. A string
4. Long, thin strips of paper
5. A hair dryer with a cool setting
6. A stapler or a tape

You can pull up liquid along a piece of straw, by dipping one end in the drink and by sucking at it from the other end.

This process is conducted by low pressure mechanism.

You can test this out by inserting another straw into your mouth, but out of the drink and then try sucking on both of them.

The drink will not travel upwards, as the low pressure will not be created with the other air moving in from the other straw.

However, if you block the open end of the second straw, you will see that you can drink the liquid again without any trouble at all.

Now another very important function of this low air pressure mechanism is the function of keeping airplanes up.

To observe this principle, push in two thumbtacks at about waist-height into each side of a wooden doorway. Now attach a string to one thumbtack and then pull it tightly to the other one from across the door.

Now take the strip of paper of about an inch wide and around 12 inches long.

Then bend the strip by about half-an-inch and attach the curved strip to the string and staple it to place.

Remember the strip should be loose enough for the paper to move along the line.

Then place the hair dryer to cool mode and then hold it against the string, at the edge of the paper strip. Now hold the paper strip parallel to the floor and put the dryer on. Once this is done, let off the paper strip. Watch how the paper remains straight, just the way you left it.

As air travels across a flat surface, there is creation of low pressure in that area. The strip will be kept in that position, with the help of the higher air pressure, artificially created above and lower it.