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You may wish to do this demonstration outside. This apparatus will use air pressure to propel tephra (sand) into the air. A fan disperses the tephra downwind where it accumulates to form a cinder cone. Visibility of the tephra is enhanced if a white sheet or cardboard is used as a backdrop and drop cloth.
Difficulty: High school
Mariotte siphons or Mariotte bottles (figure 1) are devices that provide a constant pressure that will deliver a constant rate of flow from closed bottles or tanks. The flow rate will depend upon the head as defined in figure 1 and not on the height of the free water surface. These devices find many uses where a nonchanging pressure is needed. One application in agriculture is for applying liquid
CategoryBiology > Botany
Difficulty: High school
We often read in road safety guides and magazines that we should always ensure that the tires on our cars are properly inflated with the correct amount of air pressure. Aside from affecting safety, under-inflated tires supposedly result in higher fuel consumption. This science fair project was conducted to determine if this is indeed true – ie: how does tire pressure affect the gasoline mileage
Difficulty: High school
This experiment was performed to find out how practising yoga might affect the blood pressure of a person. The experiment was done by comparing persons practising yoga for 1 week and persons watching television during the same period of time
Difficulty: High school
This science fair project was performed to study the effect of green tea on the heartbeat of daphnia. The science project experiment was done by comparing green tea and Altace, a blood pressure medication.
Difficulty: High school
The pulse represents the variation in blood pressure from diastole to systole. During diastole blood pressure falls, but increases after systole as the heart pumps more blood into the arteries. You feel this difference when taking your pulse. Doctors use a device called a sphygmomanometer
Difficulty: Middle school
Blood pressure varies relative to heart's pumping of blood. The heart should be thought of as a dual pump, with a right and left side. Systole represents the active pumping of blood from the ventricles into the circulation. The right side of the heart takes venous/returning blood from the body and sends it to the lungs to be oxygenated (pulmonary circulation). Measuring blood pressures
Difficulty: Middle school
My hypothesis is that when caffeine is consumed in large amounts it will increase the blood pressure.
Difficulty: Middle school
The purpose of this experiment was to determine how two different tempos of music would effect 6th grade boys' blood pressure.
Difficulty: Middle school
Students will determine how and why an egg is able to go into a bottle due to changes in air pressure.
Difficulty: Middle school
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