University of makati higher school ng umak 16 the

UNIVERSITY OF MAKATI
HIGHER SCHOOL NG UMAK 16

The result showed that the candle will only stop in swinging when it reaches
the middle of the candle.
LABORATORY ACTIVITY 4: (DRRR)
VORTEX VALVE TORNADO TUBE
IN A PLASTIC BOTTLE
UNIVERSITY OF MAKATI
HIGHER SCHOOL NG UMAK 17

Abstract
This experiment determines how tornado form by making a model of it using
bottles, glitter, dishwashing liquid and water. In terms of natural disaster, a
tornado is a rapidly rotating column of air that is in contact with both the
surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a
cumulus cloud. The researchers performed this experiment to determine the
how a tornado moves. This experiment tornado tube allowing for control of the
velocities, flow, and pressure differentials otherwise present in a free vortex
like that found in a tornado is disclosed. The presently disclosed vortex tube
may be used for the control and implementation of the otherwise chaotic
aspects of a true tornado and vortex (i.e., with less energy and a narrowed
and more focused and intense vortex) when implementing the critical flow
regime in a fluid flow system. The outcome of this experiment shows the
movement of a tornado in a very short distance.
UNIVERSITY OF MAKATI
HIGHER SCHOOL NG UMAK 18

INTRODUCTION
Vortex Valve Tornado Tube in a plastic bottle is an experiment to
represent the tornado. By using water bottles, water, dishwashing liquid soap
and a glitters, we can create a tornado. Tornado is a rapidly rotating column of
air that is in contact with both the surface of the earth and a cumulonimbus
cloud. (Merriam Webster, 2012) When you spin the bottle in a circular motion,
you create a water vortex that looks like a mini tornado. The water spins
around the center of the vortex very quickly because of the centripetal force.
This fancy term means that an inward force is directing the water towards the
center of its circular path. Tornadoes and hurricanes are both examples of
vortexes that we see in nature.
METHODS
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The materials used in this experiment are 2 pieces of 1.5 L bottle,
glitter, dishwashing liquid, water. In this experiment first fill the plastic bottle
with water until it reaches around three quarters full. Add a few drops of
dishwashing liquid. Sprinkle in a few pinches of glitter (this will make my
tornado easier to see). Put the cap on tightly. Turn the bottle upside down and
hold it by the neck. Quickly spin the bottle in a circular motion for a few
seconds, stop and look inside to see if you can see a mini tornado forming in
the water.
RESULTS
The researchers found out that it would not take long to form a tornado
in a water bottle. In this experiment, it shows how the tornado form and
circulate. As shown below in Figure 1, this is how it looks when it is not
shaken. When you started to shake the bottle, it will form now a tornado inside
of the bottle as shown below in Figure 2. One interesting finding is that if you