1. Bernoulli Effect
2. Airflow creates a low pressure
3. Low pressure creates lift.
Investigation and Experimentation 8th grade. Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other three strands, students should develop their own questions and perform investigations.
Students will: a. Develop a hypothesis. b. Select and use appropriate tools and technology to perform tests, collect data, and display data e. Recognize whether evidence is consistent with a proposed explanation.
Gases and Their Properties Grade Nine through Twelve
4 c. Students know how to apply the gas laws to relations between the pressure, temperature, and volume of any amount of an ideal gas or any mixture of ideal gases.
Prior knowledge & experience: Air pushes objects apart
What do you think happened to bring the two cans together? What could have caused a decrease in air pressure between the cans?
The connection between air speed and air pressure is at the center of Bernoulli's Theorem. When the air increases its speed as it moves around the ball, the air pressure around the ball also drops. In the places where the air moves the fastest, the air pressure is also the lowest.
The low air pressure around the cans pull them together. When a student blows hard on the can, you increase the speed of the air around it. This also causes the air pressure to decrease, which then pulls the cans even closer.
Most students will predict that the cans will be blown apart.