Pressure (Physics) Exam Questions with Correct Answers

Force/Area - ANSWER-Pressure = Pascals or N/cm2 - ANSWER-What is the unit of pressure? Newtons - ANSWER-What is the unit of force? Metres squared - ANSWER-What is the unit of area? Increase the force or reduce the area the force acts upon - ANSWER-How would you increase pressure? Decrease the force or increase the area the force acts upon - ANSWER-How would you decrease the pressure? Because they are both capable of flowing - ANSWER-Why are liquids and gases called fluids? The pressure increases - ANSWER-What happens to the pressure as you move away from the liquid's surface? Dense liquids exert a greater pressure - ANSWER-Do dense liquids exert a higher or lower pressure? Height x density x gravitational acceleration - ANSWER-Pressure difference = Pressure x area - ANSWER-Force = Force/pressure - ANSWER-Area = The pressure in the liquid is the same everywhere - ANSWER-What is special about the pressure in a hydraulic system? One Newton per square metre - ANSWER-What is one pascal equivalent to? Mass x gravity (9.8) - ANSWER-Weight = The depth the pressure is measured at, the density of the fluid and the gravitational field strength - ANSWER-What 3 factors affect the pressure in a fluid? All directions - ANSWER-What direction does pressure in liquids act in?