Chapter P11- Force and Pressure Flashcards
What is the equation to calculate pressure?
What two things can pressure be measured in?
What’s the ratio of these units?
What happens to the pressure in a liquid?
Why is this?
What is the word equation to calculate pressure in liquids?
What is the symbol equation to calculate pressure in liquids?
What are the units of everything in this equation?
What happens the higher the liquid above the point you are measuring?
What does this mean?
Pressure= Force -:- Area
Pascals or N/m2
1 Pa= 1 N/m2
The pressure increases as the depth increases
Because the pressure is caused by the weight of the liquid above
Pressure= Height of the column x Density of the Liquid x Gravitational field strength
P= h x -p x g
Pressure= Pa or N/m2
Height= m
Density of the Liquid= kg/m3
Gravitational Field Strength= N/kg
The more it weighs
The larger the pressure.
What happens to the pressure in liquids the more dense the light is?
What does this mean?
What is the atmosphere?
When does the atmosphere get less dense?
What is atmospheric pressure caused by?
What happens as the density decreases with height?
What does this mean?
The more it weighs
The larger the pressure
A thin layer of air around the Earth
With increasing altitude
Air molecules colliding with a surface
Fewer particles hit the surface
The pressure is lower at higher altitudes
