AP Physics 1 Flashcards: Pressure

What this deck covers

This deck focuses on Pressure, giving you a quick way to review the definitions, rules, and examples that matter most for AP Physics 1.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Identify the term for the pressure exerted by a stationary fluid.

Answer: Static pressure. Pressure from non-moving fluid.

Flashcard 2: Which instrument is used to measure atmospheric pressure?

Answer: Barometer. Measures air pressure in atmosphere.

Flashcard 3: State the formula for calculating pressure.

Answer: $P = \frac{F}{A}$. Force divided by area.

Flashcard 4: How does pressure change with increasing fluid velocity?

Answer: Pressure decreases. Bernoulli's principle relationship.

Flashcard 5: What is the relationship between depth and pressure in a fluid?

Answer: Pressure increases with depth. Hydrostatic pressure principle.

Flashcard 6: What is atmospheric pressure at sea level in Pascals?

Answer: 101,325 Pa. Standard atmospheric pressure value.

Flashcard 7: How does pressure change with increasing fluid velocity?

Answer: Pressure decreases. Bernoulli's principle relationship.

Flashcard 8: What happens to pressure in a fluid if density increases?

Answer: Pressure increases. Direct relationship in $P = \rho gh$.

Flashcard 9: Which instrument is used to measure atmospheric pressure?

Answer: Barometer. Measures air pressure in atmosphere.

Flashcard 10: State the formula for dynamic pressure.

Answer: $P_d = \frac{1}{2} \rho v^2$. Pressure from fluid velocity.

Flashcard 11: What is the relationship between depth and pressure in a fluid?

Answer: Pressure increases with depth. Hydrostatic pressure principle.

Flashcard 12: What role does the area play in determining pressure?

Answer: Larger area results in lower pressure for the same force. Inverse relationship from $P = \frac{F}{A}$.

Flashcard 13: What is the physical meaning of 1 Pascal?

Answer: 1 N/m². One Newton per square meter.

Flashcard 14: Identify the term for the pressure exerted by a stationary fluid.

Answer: Static pressure. Pressure from non-moving fluid.

Flashcard 15: How is pressure related to force and area?

Answer: Pressure is directly proportional to force and inversely proportional to area. From $P = \frac{F}{A}$ relationship.

Flashcard 16: Which physical quantity is constant in an isobaric process?

Answer: Pressure. Constant pressure process definition.

Flashcard 17: What are the SI units of pressure?

Answer: Pascals (Pa). One Pa equals one $\text{N/m}^2$.

Flashcard 18: What is the term for pressure due to the weight of a fluid?

Answer: Hydrostatic pressure. Pressure from fluid weight.

Flashcard 19: What is the effect of increasing temperature on gas pressure in a closed container?

Answer: Pressure increases. Gay-Lussac's Law at constant volume.

Flashcard 20: State the formula for calculating pressure.

Answer: $P = \frac{F}{A}$. Force divided by area.

Flashcard 21: Calculate the pressure at a depth of 5 m in water ($\rho = 1000 \text{ kg/m}^3$).

Answer: $P = 49,050 \text{ Pa}$. Using $P = \rho gh = 1000 \times 9.8 \times 5$.

Flashcard 22: What are the SI units of pressure?

Answer: Pascals (Pa). One Pa equals one $\text{N/m}^2$.

Flashcard 23: Identify the pressure change for a gas when volume is halved at constant temperature.

Answer: Pressure doubles. Boyle's Law: $PV$ constant.

Flashcard 24: What is absolute pressure?

Answer: Total pressure including atmospheric pressure. Gauge plus atmospheric pressure.

Flashcard 25: Identify the term for pressure due to fluid motion.

Answer: Dynamic pressure. Pressure from fluid kinetic energy.

Flashcard 26: Find the pressure exerted by a 500 N force on a 10 m² area.

Answer: $P = 50 \text{ Pa}$. Using $P = \frac{F}{A} = \frac{500}{10}$.

Flashcard 27: What is the effect of altitude on atmospheric pressure?

Answer: Pressure decreases with altitude. Less air mass above at height.

Flashcard 28: Identify the standard atmospheric pressure in mmHg.

Answer: 760 mmHg. Mercury column height standard.

Flashcard 29: What is gauge pressure?

Answer: Pressure relative to atmospheric pressure. Pressure above atmospheric pressure.

Flashcard 30: Convert 1 atm to Pascals.

Answer: 1 atm = 101,325 Pa. Standard atmospheric pressure conversion.

Flashcard 31: What is the effect of a vacuum on pressure?

Answer: Pressure is reduced to near zero. Vacuum removes most gas molecules.

Flashcard 32: Identify the pressure change for a gas when volume is halved at constant temperature.

Answer: Pressure doubles. Boyle's Law: $PV$ constant.

Flashcard 33: What device measures the pressure difference between two points in a fluid?

Answer: Manometer. U-tube device for pressure difference.

Flashcard 34: What is the definition of pressure in physics?

Answer: Pressure is the force exerted per unit area. Force distributed over area.

Flashcard 35: What is the relationship between pressure and temperature in Gay-Lussac's Law?

Answer: Pressure is directly proportional to temperature. At constant volume and amount.

Flashcard 36: Calculate the pressure at a depth of 5 m in water ($\rho = 1000 \text{ kg/m}^3$).

Answer: $P = 49,050 \text{ Pa}$. Using $P = \rho gh = 1000 \times 9.8 \times 5$.

Flashcard 37: Which law relates pressure and volume of a gas at constant temperature?

Answer: Boyle's Law. Relates $P$ and $V$ inversely.

Flashcard 38: What does $\rho$ represent in the fluid pressure formula?

Answer: Density of the fluid. Mass per unit volume of the fluid.

Flashcard 39: Calculate the pressure at a depth of 10 m in water.

Answer: $P = 98,100 \text{ Pa}$. Using $P = \rho gh = 1000 \times 9.8 \times 10$.

Flashcard 40: What role does the area play in determining pressure?

Answer: Larger area results in lower pressure for the same force. Inverse relationship from $P = \frac{F}{A}$.

Flashcard 41: What happens to pressure in a fluid if density increases?

Answer: Pressure increases. Direct relationship in $P = \rho gh$.

Flashcard 42: Which law relates pressure and volume of a gas at constant temperature?

Answer: Boyle's Law. Relates $P$ and $V$ inversely.

Flashcard 43: What is atmospheric pressure at sea level in Pascals?

Answer: 101,325 Pa. Standard atmospheric pressure value.

Flashcard 44: In what unit is fluid density typically measured?

Answer: kg/m³. Standard SI density unit.

Flashcard 45: What is the SI unit of force used in pressure calculations?

Answer: Newton (N). Force unit in pressure formula.

Flashcard 46: Identify the formula for pressure in a fluid at rest.

Answer: $P = \rho gh$. Hydrostatic pressure formula for fluids at rest.

Flashcard 47: What is the relationship between pressure and volume in Boyle's Law?

Answer: Pressure is inversely proportional to volume. Inverse relationship at constant temperature.

Flashcard 48: What is the principle that explains buoyancy in fluids?

Answer: Archimedes' Principle. Buoyant force equals displaced fluid weight.

Flashcard 49: Identify the formula for pressure in a fluid at rest.

Answer: $P = \rho gh$. Hydrostatic pressure formula for fluids at rest.

Flashcard 50: What is the principle that explains buoyancy in fluids?

Answer: Archimedes' Principle. Buoyant force equals displaced fluid weight.

Flashcard 51: What happens to pressure if the area is halved and force remains constant?

Answer: Pressure doubles. Pressure inversely proportional to area.

Flashcard 52: What is the effect of a vacuum on pressure?

Answer: Pressure is reduced to near zero. Vacuum removes most gas molecules.

Flashcard 53: What is absolute pressure?

Answer: Total pressure including atmospheric pressure. Gauge plus atmospheric pressure.

Flashcard 54: Find the pressure exerted by a 500 N force on a 10 m² area.

Answer: $P = 50 \text{ Pa}$. Using $P = \frac{F}{A} = \frac{500}{10}$.

Flashcard 55: In what unit is fluid density typically measured?

Answer: kg/m³. Standard SI density unit.

Flashcard 56: What is the effect of increasing temperature on gas pressure in a closed container?

Answer: Pressure increases. Gay-Lussac's Law at constant volume.

Flashcard 57: What is the term for pressure due to the weight of a fluid?

Answer: Hydrostatic pressure. Pressure from fluid weight.

Flashcard 58: How is pressure related to force and area?

Answer: Pressure is directly proportional to force and inversely proportional to area. From $P = \frac{F}{A}$ relationship.

Flashcard 59: What happens to pressure if the area is halved and force remains constant?

Answer: Pressure doubles. Pressure inversely proportional to area.

Flashcard 60: Calculate the pressure exerted by a 200 N force on a 5 m² area.

Answer: $P = 40 \text{ Pa}$. Using $P = \frac{F}{A} = \frac{200}{5}$.

Flashcard 61: Calculate the pressure at a depth of 10 m in water.

Answer: $P = 98,100 \text{ Pa}$. Using $P = \rho gh = 1000 \times 9.8 \times 10$.

Flashcard 62: Calculate the pressure exerted by a 200 N force on a 5 m² area.

Answer: $P = 40 \text{ Pa}$. Using $P = \frac{F}{A} = \frac{200}{5}$.

Flashcard 63: What is the SI unit of force used in pressure calculations?

Answer: Newton (N). Force unit in pressure formula.

Flashcard 64: State the formula for dynamic pressure.

Answer: $P_d = \frac{1}{2} \rho v^2$. Pressure from fluid velocity.

Flashcard 65: What is the relationship between pressure and temperature in Gay-Lussac's Law?

Answer: Pressure is directly proportional to temperature. At constant volume and amount.

Flashcard 66: What is the physical meaning of 1 Pascal?

Answer: 1 N/m². One Newton per square meter.

Flashcard 67: What device measures the pressure difference between two points in a fluid?

Answer: Manometer. U-tube device for pressure difference.

Flashcard 68: What does $h$ represent in the fluid pressure formula?

Answer: Height of the fluid column. Vertical distance from surface to point.

Flashcard 69: What is the definition of pressure in physics?

Answer: Pressure is the force exerted per unit area. Force distributed over area.

Flashcard 70: What is the effect of altitude on atmospheric pressure?

Answer: Pressure decreases with altitude. Less air mass above at height.

Flashcard 71: Which physical quantity is constant in an isobaric process?

Answer: Pressure. Constant pressure process definition.