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WorksheetsTopic 4-6 Study
Total questions: 20
Worksheet time: 10mins
Who was Pascal?
The chameleon from Tangled
A German Scientist that studied units and pascals
A French Scientist that worked with pressure and found a unit
A British dude that created science stuff
What is the Pa equivalent to?
Newtons
N/m2
nanometers
1,000,000
Newtons
How is pressure distributed in a hydraulic system?
a pressure exerted on a piston produces an equal increase in pressure on another piston in the system.
it presses force down on a surface and lets pressure do the work
in a hydraulic system the fluids press down and makes the thing in the hydraulic syste float or gluide
1 and 2
What is Pressure?
when you push on something and it creates pressure
push or pull upon an object resulting from the object's interaction with another object
two-dimensional quantity representing amount or extent of surface
the perpendicular force per unit area, or the stress at a point within a confined fluid.
What is a Force?
Pushing on something very hard or pulling on a perpendicular surface pulling on
a push or pull upon an object resulting from the object's interaction with another object
quantitative measure of inertia, a fundamental property of all matter
force that resists the sliding or rolling of one solid object over another
What is an Airbus A340?
a machine that floats by tiny holes that blow air from the bottom
a long-range, wide-body passenger airliner
a bus in the air
an aircraft propelled by jet engines
How many litres of air does a person breathe each day?
11,000 litres
20,000 litres
800 litres
16,000 litres
What are the key differences between a hydraulic system and a pneumatic system?
Hydraulic systems use fluids to transmit power when pneumatics use gas to transmit power
Hydraulic systems use liquids like water and oil to transmit power. Where pneumatic systems use air to transmit power
Hydraulic systems use air to transmit power. Where pneumatic systems use liquids like water and oil to transmit power
Hydraulic systems use gas to transmit power when pneumatics use fluids to transmit power
How does a Hovercraft work?
a machine that lets you float and inch off the ground with little holes at the bottom of the craft
long-range, wide-body passenger airliner
use blowers to produce a large volume of air below the hull, or air cushion, that is slightly above atmospheric pressure
a machine that uses propellers that let the craft float
What is a moveable part that controls the flow of a fluid by opening and closing?
a valve
an arteria
veins
blood vessels
What is the formula for Mechanical advantage
F x d (force x distance)
EA/LA
(Effort arm/Load arm)
m x a (mass x acceleration)
What is a disc brake system?
function and perform tasks through using a fluid that is pressurized
a system that consists of a disc/rotor, a brake calliper and brake pads
takes the kinetic energy of your moving vehicle and converts it to thermal energy through friction
a system that uses compressed air to transmit power.
What is a subsystem?
a system that has a bunch of simple machines
a structure that has parts that are connected and influence each other in some way
consists of a disc/rotor, a brake calliper and brake pads
a self-contained system within a larger system
How do veins work to return blood to the heart?
Veins must work against gravity to return blood the heart
They move the blood around until it reaches the heart
The veins keep the blood in the heart
The blood works to the heart through the veins
Where would you find pistons?
In the cylinder block
in a square-like block
in the barrell
What is the relationship between air pressure and flight?
When air moves slower, the pressure of the air increases
When air moves faster, the pressure of the air decreases
How do aircraft take advantage of changes in air pressure?
The air pressure is greater below the airfoil than above, a resulting lift force is created
The air pressure is lesser below the airfoil than above, a resulting lift force is created
It does not take advantage
What is a hydraulic lift?
it uses compressed air to transmit power.
an elevator operated by fluid pressure
a lift that uses hydraulics to lift things
function and perform tasks through using a fluid that is pressurized
What is a closed system?
a self-contained system within a larger system
a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange
system that is completely isolated from its environment
What does efficiency mean?
measures the proportion of energy which is wasted
measure of the force applied over a unit area
two-dimensional quantity representing amount or extent of surface
self-contained system within a larger system.
