Bernoulli’s Principle says that as the speed of a fluid increases, the pressure in a fluid __________.
What is Decreases
100
The density of water ___________ when it freezes into ice.
What is Lowers
100
A substance that can easily flow is called a _____________.
What is Fluid
100
If you divide the force exerted on a surface by the total area of the surface, you will know ______________.
What is Pressure
100
How does atmospheric pressure change as you move away from the surface of the Earth?
What is Decreases
200
The upward force on a wing that results from differences in pressure above and below the wing is called _____________.
What is Lift
200
Whose principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
What is Archimedes
200
An instrument that measures pressure is called a ____________.
What is Barometer
200
If you divide the mass of an object by its volume, you know the object’s ______________.
What is Density
200
How does atmospheric pressure change as you move away from the surface of the Earth?
What is Increases
300
To design a successful airplane wing, the _______________ brothers needed to apply Bernoulli’s Principle.
What is Wright
300
If you know the weight of an object that floats, you know the ___________ force.
What is Buoyant
300
The downward pressure of the atmosphere on your hand is balanced by the __________
What is Upward pressure of the atmosphere on your hand.
300
What is the unit of pressure equal to N/m2?
What is Pascal
300
By comparing ________________, you can predict whether an object will float or sink in a fluid.
What is Density
400
Using Bernoulli’s Principle, explain how a perfume atomizer works.
What is Moving air from bulb above tube lowers pressure.
Difference in pressure between top and bottom of tube draws perfume upward.
400
What is the force that acts in an upward direction, against the force of gravity, so it makes an object feel lighter in a liquid?
What is Buoyancy
400
Snowshoes allow you to walk on the snow without sinking because they ___________
What is Distribute the force of your weight over a larger area.
400
What is the unit of density when the area is measured in cubic centimeters and the mass is measured in grams?
What is Grams per cubic centimeter
400
A helium balloon rises because helium is _____________ than air.
What is Less dense
500
Use Bernoulli’s principle to explain why the fabric of a domed tent bulges outward on a windy day.
What is Air outside tent is moving faster than air inside tent so has less pressure according to Bernoulli’s Principle. The greater pressure inside the tent causes the fabric to bulge outward.
500
A boat that weights 28,800 N is loaded with 7,200 N of cargo. After it is loaded, what is the buoyant force acting on the boat?
What is 36,000 N
500
Why doesn’t air pressure crush human beings standing at sea level?
What is Pressure from the fluids inside our bodies balances the air pressure outside.
500
A dollar bill measures about 15.9 cm x 6.7 cm. The Chinese yuan note measures 14.5 cm x 7.0 cm. Which currency uses a larger bill?
What is The dollar bill – the area is 110 cm2 and the yuan note has an area of 100 cm2
500
An object that weights 340 N floats on a lake. What is the weight of the displaced water?