Theory
Pressure is define as...
the push of a fluid
The SI unit for pressure is...
the Pascal (Pa)
The SI unit for force is...
Newtons (N)
The SI unit for area is...
If I increase the force on a fluid, the pressure ________. (increases or decreases)
increases
As you swim down deeper in the ocean there is __________ water pressure (more or less)
more
The formula for pressure is...
force/area
A force is defined as...
a push or a pull
What is the area of a rectangle with a length of 12 in. and a width or 10 in.? (Include units!)
120 in.2
If I decrease the area, the pressure ________. (increases or decreases)
increases
As you move up a mountain there is __________ air pressure (more or less)
less
A box has a weight of 100 lbs and the bottom of the box is 10in2. What is the pressure the box exerts on the floor?
10 lbs/in2 or 10 PSI
What is the weight of an object that has a base which is 4 square inches and which exerts a pressure of 24 pounds per square inch?
96 pounds
A round tube weighs 90 lbs. If the tube is stood on end it pushes down on the floor with a pressure of 2 lbs/in2. How many square inches is the end of the tube?
45 in2
If I pop a balloon, the air in is going to leak out. What type of pressure environment does that air end up in? (high or low)
low
Fill in the blanks using high or low: Fluids want to move from areas of ________ pressure to areas of _______ pressure.
Fluids want to move from HIGH pressure to LOW pressure.
A statue weighs 2000 Newtons and has a base that is 4 meters by ½ meter. What is the pressure the statue exerts on the floor?
1000 N/m2 or 1000 Pa
What does a car weigh if its tires cover an area of 4 square feet and each tire exerts a pressure of 1000 pounds per square foot on the ground?
4000 pounds
The pressure a box pushes down on the floor is 40 lbs/in2. If the box weighs 800 lbs what is the area of the base of the box?
20 in2
If I go 10 meters down in the ocean, the water pressure increases by 1 atmosphere (a unit that is equal to about 1 Pa). If I travel 1000 meters down into the ocean, what would be the water pressure?
10,000 Pa or atmosphere
Gas or liquid
The base of a box is 7 inches by 10 inches. It weighs 700 pounds. What is the pressure exerted on the floor by the box?
10 PSI or 10 lbs./in.2
To pop a balloon you stab it with a pencil. If the area of the pencil tip is 1 in2 and the pressure applied by the pencil to the balloon is 10 lbs/in2, how hard (what force) must you push on the pencil to make the balloon pop?
10 pounds
A unicycle weighs 50 lbs. If the pressure the tire exerts on the road is 5 lbs per square inch, what is the area of the tire in contact with the road?
10 in2
If I go 10 meters down in the ocean, the water pressure increases by 1 atmosphere (a unit that is equal to about 1 Pa). How far down would I need to travel in order to have a water pressure of 200 atmospheres?
2000 meters