Vortex rings with a bottle Follow FizzicsEd 150 Science Experiments: Comments 0 You will need: A fog machine A soft drink bottle (try different sizes!) Copyright Instruction 1 Warm-up your fog machine and then fill your soft drink bottle with stage fog. That’s it, you’re ready to go! 2 Gently squeeze the soft drink bottle in short bursts… you should see a vortex fog ring shoot out of the opening! 3 School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too! 4 Online courses for teachers & parents – Help students learn how science really works 5 Get the Unit of Work on Pressure here! Want to dive into air pressure? It’s all about air pressure in many ways! From how storms form to how planes fly, this unit covers many concepts about air pressure. Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more What is going on? We love toroidal vortices! The way these rings form is due to the air rushing out of the bottle opening at different speeds. Think about what the air is doing as it travels out of the bottle; the air is being forced out of the bottle and some of this air is hitting the sides of the bottle opening. The air hitting the side of the bottle slows down due to friction, meanwhile, the air in the middle of the opening continues to leave the bottle at speed. The different air speed forces the ring-shape to form! The underlying reason for the ring shape is due to a pressure differential. The mathematician Bernoulli found that moving air has less pressure than air that is still; this means that the fast air coming out of the bottle has a lower pressure than the slower air near the bottle sides. As high-pressure air moves towards low-pressure air, squeezing the bottle forces air to quickly form a ring as it leaves the bottle due to the low air pressure of the fast air rushing outwards. Low air pressure occurs when air is sped up. Then the energy of the air molecules is being used mostly to move them faster, and less to bounce them off of each other and the balloons. Without as many collisions between the air molecules, the pressure between them is lower, and surrounding, slower-moving air molecules have more energy to bounce into the space, moving the balloons towards each other as they move in. The way that moving gases and fluids work is that slower air will move towards faster air. Want to make larger fog rings? Learn how to make large ones with a bin Variables to try Try different sizes of plastic bottles. Does placing a triangle shape in the bottle opening create a triangle-shaped ring? Learn more! Teaching about air pressure? Check out the Flight or Weather show! Teaching about Newton’s laws? Check out the Forces, Friction & Movement workshop! Get in touch with FizzicsEd to find out how we can work with your class. Forces, Friction & Movement Years K to 6 Maximum 30 students School workshop 60 or 90 minutes Online Class Available Read More Enquire Now Big Science Big Fun Show K to 6 For large audiences School science show 60 minutes Read More Enquire Now Hands-on Kids Science Party >20 hands on science experiments Gigantic bubbles Slime making Professional science show Read More STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now
Warm-up your fog machine and then fill your soft drink bottle with stage fog. That’s it, you’re ready to go!
Gently squeeze the soft drink bottle in short bursts… you should see a vortex fog ring shoot out of the opening!
School science visits since 2004! – Curriculum-linked & award-winning incursions. – Over 40 primary & high school programs to choose from. – Designed by experienced educators. – Over 2 million students reached. – Face to face incursions & online programs available. – Early learning centre visits too!
Get the Unit of Work on Pressure here! Want to dive into air pressure? It’s all about air pressure in many ways! From how storms form to how planes fly, this unit covers many concepts about air pressure. Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more
Teaching about air pressure? Check out the Flight or Weather show! Teaching about Newton’s laws? Check out the Forces, Friction & Movement workshop! Get in touch with FizzicsEd to find out how we can work with your class.
Forces, Friction & Movement Years K to 6 Maximum 30 students School workshop 60 or 90 minutes Online Class Available Read More Enquire Now
Big Science Big Fun Show K to 6 For large audiences School science show 60 minutes Read More Enquire Now
Hands-on Kids Science Party >20 hands on science experiments Gigantic bubbles Slime making Professional science show Read More
STEM Full Day Accelerator - Primary Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials. Read More Enquire Now
Designed from real classroom experiences, this modular day helps you create consistently effective science learning that directly address the new curriculum with easily accessible and cost-effective materials.
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