Lesson 1: Fluid Density and Hydrostatic Pressure

Why do your ears pop when you dive to the bottom of a deep pool or fly in an airplane?

How does a column of static fluid exert a force on the walls and bottom of its container?

If water is vastly heavier than air, why doesn't the weight of Earth's miles-thick atmosphere instantly crush us?

Fluid
Density
Pressure
Pascals
Atmospheric Pressure
Hydrostatic Pressure

HS-PS2-1: Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration. (Applied to buoyant forces and pressure differentials).

HS-PS3-1: Create a computational model or simulation of a phenomenon, such as the dependence of a system’s energy on its configuration and relative position, to calculate the change in energy of the system. (Applied to fluid pressure at depth and work-energy in hydraulics).

Define what constitutes a fluid and transition students from thinking about localized, linear forces (like a push or pull) to distributed forces acting over an area (pressure) within static systems.

Scuba diving and "The Bends": As a scuba diver descends, the hydrostatic pressure increases by roughly one atmosphere for every 10 meters of depth. This extreme pressure forces nitrogen gas to dissolve into the diver's blood. If they surface too quickly, the sudden drop in pressure causes that nitrogen to rapidly bubble out of solution—like opening a shaken soda bottle—causing severe decompression sickness.

MPS Science Differentiation Strategies

https://tinyurl.com/5n6c24k7

Unit 7 Assessment