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- 1. Multiple Choice
What is pressure?
Somebody convincing you to jump into a pool.
How deep a well is.
Amount of force applied to a given area.
Amount of water in a cup of water.
- 2. Multiple Choice
Pneumatic means it uses:
Wood
Gasoline
Air
Water
- 3. Multiple Choice
To find the pressure on an object you need to calculate:
pressure = F/A
pressure = A/F
pressure = F x A
pressure = A x F
- 4. Multiple Choice
An engineer is applying a certain amount of force to an object in a test lab. The engineer's assistant suggests spreading the same amount of force over double the area. What will happen?
The pressure on the object will be doubled.
The pressure on the object will be halved.
The pressure on the object will not be affected.
The force will decrease.
- 5. Multiple Choice
Which of the following is not a principle on which hydraulic systems work?
In a confined system, liquids are compressible.
Liquids are incompressible in an enclosed area.
Fluid particles transfer forces in all directions.
Applied force at one end causes motion at the other end of the system.
- 6. Multiple Choice
Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?
The design of this structure is stronger.
Water pressure increases with depth.
The cost of construction is lower.
Water pressure acts uniformly in all directions.
- 7. Multiple Choice
Where would pressure be the greatest
10 m deep in a lake at sea level
5 m deep in a pond on a mountain
top of a mountain 15,000 feet up
on a hill in Oklahoma City (1,200 ft. above sea level)
- 8. Multiple Choice
In the image which hole will allow the water to travel furthest?
A
B
C
- 9. Multiple Choice
Why is it dangerous to hold your breathe when SCUBA diving?
Air in your lungs can expand as you descend, damaging them
Air in your lungs can expand as you ascend, damaging them
Water pressure can force water into your lungs
Your lungs stretch as you go deeper due to increasing pressure
- 10. Multiple ChoicePressure is measured in what unitsNewtonsm/sPascalsMoles
- 11. Multiple ChoiceA person wearing steel toe capped boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?The person wearing the boots because the boots have a larger surface area in contact with the floorThe person with the stiletto heels because they have a larger surface area in contact with the floorThe person wearing the boots because the boots have a smaller surface area in contact with the floorThe person with the stiletto heels because they have a smaller surface area in contact with the floor
- 12. Multiple Choice
A person wearing boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?
boots because they have a larger surface area
stiletto heels because they have a larger surface area
boots because they have a smaller surface area
stiletto heels boots because they have a smaller surface area
- 13. Multiple Choice
Your friend is playing a video game in which he is the captain of a submarine. The controls are complicated, simulating all the functions of a real submarine. He is losing game after game because he cannot keep the submarine under the surface. What must he do to make the submarine dive?
change the type of fuel the submarine is using
increase the air in the submarine's ballast tank
increase the water in the submarine's ballast tank
decrease the average density of the submarine
- 14. Multiple Choice
When the amount of air in a fish's swim bladder increases, what happens to the fish?
It changes the direction in which it is swimming.
It sinks lower in the water.
It drops to the bottom of the body of the water.
It rises closer to the surface.
- 15. Multiple Choice
A hydraulic system uses ___________, while a pneumatic system uses ____________
water, air
water, oil
oil, air
fluid, solid
- 16. Multiple Choice
Engineer’s need to take a lot into consideration when they are building dams. This is due to the fact that pressure ___________________ as depth of water ______________.
increases, decreases
inscreases, inscreases
decreases, stays the same
decreases, increases
- 17. Multiple Choice
Which one is an example of valves?
- 18. Multiple Choice
How are a hydraulic system and a pneumatic system similar?
Both use a gas.
Both use water.
Both use a fluid to apply force.
Both use valves and pistons.
- 19. Multiple Choice
How are a hydraulic system and pneumatic system different?
One is more powerful than the other.
One uses a gas, and the other uses a liquid.
One has a pump, and the other does not.
One has more valves than the other.
- 20. Multiple Choice
What is a valve?
A mechanical device or part that moves a fluid through or into something.
A system that allows a fluid to move quickly.
A mechanical fluid system that releases pressure.
A mechanical device or part that controls the flow of fluids.
- 21. Multiple Choice
What parts of fluid systems are also found in the human body?
Valves.
Compressible and incompressible fluids.
Pumps.
Pistons.
- 22. Multiple Choice
What is a pump?
A fluid system that allows pressure to be applied to another object.
Compressed air that pushes out pressure from an object.
A mechanical device or part that is used to move a fluid through or into something.
A mechanical device that does not move a fluid.
- 23. Multiple Choice
which one is an example of Pascal's law?
A bathtub overflows with water when you leave the faucet running too long.
Toothpaste moves throughout the tube when you squeeze it with the cap still on.
Warm are from a hair dryer blows through your hair.
All of the above.
- 24. Multiple Choice
A bicycle pump is an example of a ______________________.
Valve.
Pneumatic system.
Hydraulic system.
Piston.
- 25. Multiple Choice
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The brake system
The instrument panel
The radio system
- 26. Multiple Choice
In a simple enclosed hydraulic system with pistons of different surface area, which requires the most force to move it?
The larger Piston
The smaller Piston
The force required to move each piston will be equal.
Neither can move due to incompressibility of fluid.
- 27. Multiple Choice
A window washer notices that the spray hose he uses is spraying water at too high a pressure and damaging the trim on the windows. The rate of flow could be reduced by ...
increasing the nozzle opening
shortening the hose
decreasing the nozzle opening
lengthening the hose
- 28. Multiple Choice
Which of the following is not a principle on which hydraulic systems work?
In a confined system, liquids are compressible.
Liquids are incompressible in an enclosed area.
Fluid particles transfer forces in all directions.
Applied force at one end causes motion at the other end of the system.
- 29. Multiple Choice
Where will the greatest increase in pressure occur if you squeeze the middle of an upright, closed soft-drink bottle?
The top of the bottle
The middle of the bottle
The bottom of the bottle
The pressure will increase equally everywhere within the bottle
- 30. Multiple Choice
The hydraulic system of a dump truck is designed to multiply
distance
force
pressure
speed
- 31. Multiple ChoiceFluid pressure is directedin all directions.only upward.only downward.always sideways.
- 32. Multiple Choice
As elevation increases, pressure _______
increases
decreases
stays same
IDK
- 33. Multiple Choice
How does a submarine rise?
By evaporating the air out.
By opening its ballast tanks.
By using compressed air to force the water out.
- Answer choicesTagsAnswer choicesTags