P1.3 Pressure

• Match the medium with its pressure characteristics:

  Solids ↔️ Pressure is exerted on a fixed surface area

  Liquids ↔️ Pressure is exerted equally in all directions

  Gases ↔️ Pressure is exerted on the container walls
• One pound per square inch (psi) is approximately equal to 6895 pascals.
• A larger area leads to lower pressure if the force remains constant.
• What type of volume do gases maintain?

  Fixed volume
• What do pressure transducers convert pressure into?

  Electrical signal
• Manometers measure the absolute pressure at a single point.

  False
• The formula for pressure is P = \frac{F}{A}</latex>


  True
• Match the medium with its pressure characteristics:

  Solids ↔️ Pressure is exerted on a fixed surface area

  Liquids ↔️ Pressure is exerted equally in all directions

  Gases ↔️ Pressure is exerted on the container walls
• What is the standard unit of pressure in the SI system?

  Pascal
• What is the relationship between pressure and area if force remains constant?

  Inversely proportional
• What principle do manometers use to measure pressure differences?

  Liquid column balancing
• What is the formula for pressure?

  $P =$$\frac{F}{A}$
• What is the SI unit of pressure?

  Pascal (Pa)
• What two factors affect pressure?

  Force and area
• What is the formula for pressure in gases and liquids?

  $P =$$\frac{F}{A}$
• What do manometers measure?

  Pressure difference
• What is the purpose of a barometer?

  Measure atmospheric pressure
• What is the formula used in manometers to calculate pressure?

  $P =$$\rho g h$
• 1 psi is approximately equal to 6895 Pa.


  True
• Gases are highly compressible, while liquids are nearly incompressible.


  True
• Pressure transducers convert pressure directly into mechanical force.

  False
• Pressure is defined as the force applied perpendicular to a surface divided by the area
• One pascal is equal to one newton per square meter.

  True
• A higher force leads to higher pressure if the area remains constant.


  True
• Match the property with the correct medium:

  Highly compressible ↔️ Gases

  Nearly incompressible ↔️ Liquids
• The formula for manometers is $P =$$\rho g h$


  True
• Pressure transducers convert pressure into an electrical signal
• Steps to define pressure and its formula

  1️⃣ Define force

  2️⃣ Define area

  3️⃣ Define pressure as force per area

  4️⃣ Write the formula $P =$$\frac{F}{A}$
• In the pressure formula, F represents the applied force
• A higher force applied to a fixed area results in higher pressure
• Hydrostatic pressure in a deep-sea submarine is constant in all directions
• Match the application of pressure with its principle and benefit:

  Hydraulic Systems ↔️ Uses fluid pressure to transmit force; high force output

  Pneumatic Systems ↔️ Utilizes compressed gas pressure; lightweight and high speed

  Medical Applications ↔️ Measures body pressures for diagnosis; non-invasive results

  Weather Monitoring ↔️ Tracks atmospheric pressure patterns; predicts weather