Understanding Non-Newtonian Fluids

The video demonstrates an experiment involving a large pool filled with a non-Newtonian fluid, Oobleck. Initially, a runner successfully crosses the pool by applying continuous force, which thickens the liquid enough to support their weight. However, when the force stops, the Oobleck returns to a liquid state. The experiment then shifts to a bicyclist attempting to cross the pool. The cyclist initially succeeds by pedaling hard, creating enough force to solidify the Oobleck. However, when starting from a standstill, the lack of force causes the bike to sink, illustrating the unique properties of non-Newtonian fluids.

What materials are mentioned as necessary for creating the large pool?

• Cement mixer, sand, and a 30 ft long pool

• 13 T cement mixer, 9 tons of uck, and a 25 ft long pool

• 10 T cement mixer, 5 tons of uck, and a 20 ft long pool

• 15 T cement mixer, 12 tons of uck, and a 35 ft long pool

What happens to the liquid when a runner stops moving their feet?

• The liquid evaporates

• The liquid remains solid indefinitely

• The liquid becomes more solid

• The liquid returns to a more liquid state

What is the main concept demonstrated by the foot strike experiment?

• The liquid evaporates when struck

• The liquid thickens enough to support weight

• The liquid becomes colder

• The liquid changes color

What happens to the particles of cornstarch when force is no longer applied?

• They become more compact

• They dissolve completely

• They evaporate

• Water fills the gaps between them

What is necessary to prevent getting stuck in the liquid?

• Increasing the temperature of the liquid

• Reducing the force applied to the particles

• Standing still on the liquid

• Applying continuous force to the particles

What does the bicyclist need to do to make the liquid behave like a solid?

• Pedal in reverse

• Pedal hard to create enough downward force

• Stop pedaling completely

• Pedal slowly and steadily

What is the effect of entering the liquid from a standstill with less speed?

• The bicycle sinks and gets stuck

• The liquid evaporates

• The bicycle floats on the liquid

• The liquid becomes more solid

What is the outcome when the bicyclist doesn't pedal hard enough?

• The bicycle sinks and gets stuck

• The bicycle floats on the liquid

• The bicycle jumps over the liquid

• The bicycle speeds up