Condition:New
Type:Logic ICs
【Name】Air suspension ball demonstrator
【Scientific Principle】The force of change in air pressure on an object.
[Material] high density board environmental protection paint, engineering plastics, acrylic
[Product size]: 250*250*450, random color delivery
[Scope of use]: Scientific exploration experiment supporting instruments, can be used as kindergartens, training institutions, rural children's palaces, off-campus training bases, etc., and can also be used by individual families.
Instruction Manual for Air Suspension Ball
Purpose:
1. Explore the effect of changes in air pressure on an object.
2. Explore the working principle of air buoyancy.
3. Explore the application of Bernoulli's principle in gases.
experiment equipment:
1 thin plastic ball, blower and bracket.
Submit questions:
Air can flow, and the air pressure is changing as it flows. When a thin plastic ball is put in a flowing airflow, why is the thin plastic ball not blown away?
Conjectures and assumptions:
Air currents may blow thin plastic balls into the air.
Experiment procedure:
1. Turn on the switch of the instrument, put the thin plastic ball near the air outlet, slowly approach the air flow, and observe the phenomenon.
2. Place the small plastic ball at the air outlet at the lower end and observe what happens.
Explore questions:
1. Why does the plastic ball feel like it is being sucked by the airflow?
2. Try to analyze what principle is applied to the suspension of the plastic ball in the air.
3. Try to analyze the force of the plastic ball when it is suspended in the air and the air pressure around the plastic ball.
4. What will happen to the plastic ball if the airflow blows vertically upwards? What is the stress situation at this time?
Experimental conclusion and experience:
(The following is summarized and communicated by students, and can also be guided by teachers)
Extracurricular Activities:
After drilling a small hole in the cap of the waste beverage bottle, insert a straw (insert 1 cm), cut off the bottle body and leave only the horn shape of the bottle mouth, tighten the cap with straw to make a funnel . Cover a ping pong ball with a funnel, then keep blowing air into the straw with your mouth, while slowly raising your head and lifting the funnel to see if the ping pong ball can be blown up. Try to explain why.
Precautions:
1. After the experiment is completed, the power should be turned off in time. Pay attention to safety when using the blower, avoid facing the air outlet to other students, and be careful that the air inlet will suck light and small objects in.
2. When looking for the floating position, move the balloon as slowly as possible to find the best floating position.
