# Pressure, Buoyancy, And Bernoulli's Principle Quiz

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Basic concept about Pressure, Buoyancy, and Bernoulli's Principle.
Please do it before 18th March 2009

• 1.

### What phases of matter are fluids ?

Explanation
Liquids and gases are both considered fluids because they can flow and take the shape of their container. Liquids have a definite volume but no definite shape, while gases have neither a definite volume nor shape. Therefore, both liquids and gases exhibit the properties of fluids.

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• 2.

### An object will ______ in a fluid, if its density is lower than that of the fluid.

Explanation
If an object has a lower density than the fluid it is placed in, it will float. This is because objects with lower density are less dense than the surrounding fluid, causing them to be buoyant and float on top of the fluid.

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• 3.

### If buoyant force is greater than the weight of the fluid, the object will ___ in the fluid.

Explanation
When the buoyant force acting on an object is greater than the weight of the fluid it displaces, the object will float in the fluid. This is because the buoyant force pushes the object upwards, counteracting the force of gravity pulling it downwards. As a result, the object remains suspended in the fluid without sinking.

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• 4.

### An object will ____ in a fluid, if its density is greater than that of the fluid

Explanation
If an object has a greater density than the fluid it is placed in, it will sink. This is because the upward buoyant force exerted by the fluid on the object is not strong enough to counteract the downward force of gravity acting on the object. As a result, the object will sink to the bottom of the fluid.

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• 5.

### _________ force is the force that pushes up on an object in the fluid.

Explanation
Buoyant force is the force that pushes up on an object in a fluid, such as water. This force is exerted due to the difference in pressure between the top and bottom of the object. The buoyant force is equal to the weight of the fluid displaced by the object, according to Archimedes' principle. This force allows objects to float or experience an apparent weight loss when submerged in a fluid.

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• 6.

### Archimedes' Principle states that the buoyant force on an object is equal to the _____ of the fluid displaced by the object.

Explanation
Archimedes' Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. This means that when an object is submerged in a fluid, it experiences an upward force equal to the weight of the fluid it has displaced. The buoyant force helps to determine whether an object will float or sink in a fluid.

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• 7.

### The principle behind hydraulics is that pressure is transmitted _______ in all dierctions in a fluid.

Explanation
Hydraulics is based on the principle that pressure is transmitted equally in all directions in a fluid. This means that when force is applied to a confined fluid, it is transmitted uniformly throughout the fluid, allowing for the transfer of energy and the amplification of force. This principle is utilized in various applications, such as hydraulic systems in machinery and vehicles, where the equal transmission of pressure enables efficient and controlled movement.

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• 8.

### F the buoyant force is equal to the weight of the fluid, the object will be _______ inside the fluid.

Explanation
If the buoyant force is equal to the weight of the fluid, the object will be suspended inside the fluid. This means that the upward force exerted by the fluid on the object is equal to the downward force of the object's weight. As a result, the object remains in equilibrium and does not sink or rise to the surface. It stays suspended at a certain depth in the fluid.

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• 9.

### If buoyant force is less than the weight of the fluid, the object will ____ in the fluid.

Explanation
If the buoyant force is less than the weight of the fluid, the object will sink. This is because the buoyant force is the upward force exerted on an object immersed in a fluid, and it is equal to the weight of the fluid displaced by the object. When the buoyant force is less than the weight of the fluid, the object experiences a net downward force, causing it to sink in the fluid.

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• Mar 21, 2023
Quiz Edited by
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• Mar 10, 2009
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