You will need two plastic bottles (any size will do, but same size works best) and some water to make your bottle-bound tornado.
Half fill one bottle with water and screw on the Whirlpool. Then screw the second empty bottle into the other side of the valve. Turn the bottles so that the one with water is upside down and watch what happens. The water flows slowly into the bottom bottle.
Now try it again, this time giving the bottles a quick swirl around in a circle. This time the water flows much faster, and a vortex forms. This funnel-like structure allows the air from the bottom bottle to rise quickly and smoothly. You can add food colouring and glitter to the water to make it easier to see the vortex.
Contents: one Whirlpool with construction diagram. You will also need two empty screw top plastic bottles and water to complete the experiment (not included).
Your Whirlpool will be selected from the six available colours - red, yellow, blue, green, orange or purple.
Not recommended for children under three years of age.
Product size: 50 x 30 x 30mm
This product makes a great classroom teaching resource, and can be used in classroom activities that align to the Australian Curriculum.
Year 4 - ACSSU075
Earth’s surface changes over time as a result of natural processes and human activity