Pressure
Buoyancy
Air Pressure
Fluid Pressure
Equations
100
What is the SI Unit for Pressure?
What is Pascal(Pa)
100
Choose the Correct Answer-
What is Buoyancy?
a)Product of an object's mass and velocity.b)Mass per unit volume.
c)An upward force that acts on an object submerged in a fluid.
d)Bart Simpson
What is C.
100
Which of the following explains lift of an airplane.
a)Archimedes' Law b)Pascal's Principle
c)Conservation of Momentum e)Bernoulli's Principle
It's (E).
100
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The snow glows white on the mountain tonight
Not a footprint to be seen
A kingdom of isolation
And it looks like I'm the queen
The wind is howling like this swirling storm inside
Couldn't keep it in, heaven knows I've tried
Don't let them in, don't let them see
Be the good girl you always have to be
Conceal, don't feel, don't let them know
Well, now they know
Let it go, let it go
Can't hold it back anymore
Let it go, let it go
Turn away and slam the door
I don't care what they're going to say
Let the storm rage on
The cold never bothered me anyway
It's funny how some distance makes everything seem small
And the fears that once controlled me can't get to me at all
It's time to see what I can do
To test the limits and break through
No right, no wrong, no rules for me
I'm free
Let it go, let it go
I am one with the wind and sky
Let it go, let it go
You'll never see me cry
Here I stand and here I stay
Let the storm rage on
My power flurries through the air into the ground
My soul is spiraling in frozen fractals all around
And one thought crystallizes like an icy blast
I'm never going back, the past is in the past
Let it go, let it go
When I'll rise like the break of dawn
Let it go, let it go
That perfect girl is gone
Here I stand in the light of day
Let the storm rage on
The cold never bothered me anyway
100
12.9g and 8cm3
Find the density.
Remember to say the units.
1.6125g/cm3
200
Define Pressure for me please.
What is, a force exerted over an area on the surface of an object.
200
What is the difference between Weight and Buoyant Force?
What is, weight is a measure of the force of gravity pulling down on an object, whereas buoyant force pushes up on an object.
200
Finish the Sentence - The faster the fluid moves the ______ pressure it exerts
What is, less.
200
How does a Hydraulic device multiply force?
What is, it multiplies force by applying force to a small surface area.
200
2.5g/mL and 15mL
Find the mass.
Remember to say the units.
37.5g
300
Why does air exert Pressure?
What is, because it has mass and weight.
300
Finish the sentence - A given volume of a ______ substance is ______ than the same volume of a less dense substance.
What is, a given volume of a denser substance is heavier than the same volume of a less dense substance.
300
What makes fluids flow?
What is, fluids go from high pressure to low pressure.
300
Describe a Hydraulic system. Also what happens when pressure is increased?
What is, a hydraulic system is a system that transmits pressure in a confined fluid. When pressure is increased the other sides force increases.
300
A block has the dimensions 20cm, 5cm, 10cm.
It has a mass of 2700g.
Find the density.
2.7g/cm3
400
Finish the sentence - Pressure ______ as the area ______.
What is, pressure decreases/increases as the area increases/decreases.
400
True or False - The volume of displaced water does not equal to the volume of a submerged object.
What is, False.
400
Why is there a difference in air pressure on the top and bottom of the wing?
The shape of a wing causes air to flow more slowly below it than above it.
400
What does the Hydraulic system in a car do?
It is used to break/stop the car.
400
1300g and 743cm^3
Find the density.
Remember to say the units.
You can round.
1.75 g/cm3
500
Why do astronauts wear space suits in space. Specific Answer.
The atmospheric pressure is low in space due to the elevation it's at. Less Atmospheric Pressure = No Oxygen. Therefore they wear spacesuits to breathe.
500
Define Archimedes' Law in YOUR OWN WORDS and give one example. 69 extra points if you say where he invented his law.
Answers may vary.
The buoyant force acting on an object equals the weight of the fluid displaced by the object.
He invented it in a bathtub.
500
Define Bernoulli's Principle in YOUR OWN WORDS and give one example.
Answers May Vary.
As the speed of a moving fluid increases, the pressure within the fluid decreases.
500
Define Pascal's Principle in YOUR OWN WORDS and give one example. 69 extra points if you say the formula to his principle.
Answers May Vary.
When force is applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid.
P1=P2
500
1896g with dimensions 8.4cm, 5.5cm, and 4.6cm.
Find the density.
Remember to say the units.
You can round.
8.9g/cm3