P11 Force and Pressure (Triple only)

What is the unit of pressure?

• Newton (N)

• Pascal (Pa)

• Joule (J)

• Watt (W)

How does pressure change when a force acts over a small surface area?

• Pressure is reduced

• Pressure remains the same

• Pressure is increased

• Pressure is eliminated

What is the formula to calculate pressure?

• P = F / A

• P = A / F

• P = F * A

• P = A * F

What happens to the pressure in a liquid as the depth increases?

• Pressure decreases

• Pressure remains the same

• Pressure increases

• Pressure fluctuates

What is the formula to calculate the pressure caused by a column of liquid?

• p = h * ρ * g

• p = h / ρ * g

• p = ρ / h * g

• p = h * g / ρ

What is upthrust?

• The downward force on an object in a fluid

• The sideways force on an object in a fluid

• The upwards resultant force on an object submerged in a fluid

• The force that causes an object to sink

What determines whether an object will float or sink in a fluid?

• The color of the object

• The shape of the object

• The density of the object compared to the fluid

• The temperature of the fluid

What happens to atmospheric pressure as altitude increases?

• It increases

• It remains the same

• It decreases

• It fluctuates

What is the term for the pressure caused by air molecules colliding with surfaces?

• Gravitational pressure

• Atmospheric pressure

• Surface pressure

• Fluid pressure

What is the relationship between the weight of an object and upthrust for an object to float?

• Weight is greater than upthrust

• Weight is equal to upthrust

• Weight is less than upthrust

• Weight is not related to upthrust