Forces In Fluids Section 1
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Water pressure increases as depth increases.
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True
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False
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About This Quiz
This quiz is to test your knowledge of Section 1 of Forces in Fluids. This section ia all about pressure.
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- 2.
Choose the letter of the term that is an SI unit of pressure.
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Newton
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Liter
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Weight
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Pascal
Correct Answer
A. PascalExplanation
The correct answer is pascal. The pascal is the SI unit of pressure. It is defined as one newton per square meter. It is named after the French mathematician, physicist, and philosopher Blaise Pascal. The pascal is commonly used in various fields such as physics, engineering, and meteorology to measure pressure.Rate this question:
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- 3.
In a fluid that is not moving, pressure at a given point is exerted equally in all directions.
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True
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False
Correct Answer
A. TrueExplanation
In a fluid that is not moving, the pressure at a given point is exerted equally in all directions. This is because the fluid particles are in equilibrium, meaning that the forces acting on them are balanced. As a result, the pressure is distributed evenly in all directions, regardless of the orientation of the surface.Rate this question:
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- 4.
A substance that can easily flow is a(n) _________________________.
Correct Answer
fluidExplanation
A substance that can easily flow is referred to as a fluid. Fluids have the ability to flow and take the shape of their container, as they do not possess a definite shape or volume. They can be either liquids or gases. The term "fluid" encompasses a wide range of substances, including water, air, oil, and many others.Rate this question:
- 5.
The pressure exerted by a fluid is the total force exerted by the fluid divided by the _________________________ over which the force is exerted.
Correct Answer
area
total areaExplanation
The pressure exerted by a fluid is determined by dividing the total force exerted by the fluid by the area over which the force is exerted. In other words, pressure is calculated by taking the force and dividing it by the area. The larger the area over which the force is spread, the lower the pressure will be, and vice versa. Therefore, the correct answer is "area" or "total area" as both terms refer to the surface over which the force is distributed.Rate this question:
- 6.
Air pressure increases as elevation increases.
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True
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False
Correct Answer
A. FalseExplanation
The statement is incorrect. As elevation increases, the air pressure decreases. This is because the atmosphere becomes less dense at higher altitudes, resulting in lower air pressure. As we go higher in the atmosphere, there are fewer air molecules above us, leading to a decrease in pressure. Therefore, the correct answer is false.Rate this question:
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- 7.
Force and pressure are the same thing.
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True
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False
Correct Answer
A. FalseExplanation
Force and pressure are not the same thing. Force refers to the push or pull applied to an object, while pressure is the force applied per unit area. Force is a vector quantity, meaning it has both magnitude and direction, whereas pressure is a scalar quantity, only having magnitude. Therefore, force and pressure are distinct concepts in physics.Rate this question:
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- 8.
Another term for air pressure is ___________________________.
Correct Answer
atmospheric pressureExplanation
Air pressure refers to the force exerted by the weight of air molecules in the Earth's atmosphere. It is commonly known as atmospheric pressure because it is the pressure exerted by the Earth's atmosphere on any given point. The term "atmospheric pressure" is used to describe the pressure exerted by the air surrounding us, which plays a crucial role in weather patterns, climate, and various natural phenomena.Rate this question:
- 9.
Choose the letter of each of the following that are fluids.
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Helium gas
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Liquid water
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Ice
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Air
Correct Answer(s)
A. Helium gas
A. Liquid water
A. AirExplanation
The given answer is correct because helium gas, liquid water, and air are all examples of fluids. Fluids are substances that can flow and take the shape of their container. Helium gas is a fluid because it can fill and flow within a container. Liquid water is a fluid because it can flow and take the shape of its container. Air is also a fluid because it can flow and fill spaces. Ice, on the other hand, is not a fluid because it is a solid and does not flow like liquids or gases.Rate this question:
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- 10.
Choose the letter of the two answers below that are equal to each other.
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1 pascal
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1 newton per square centimeter
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1 newton per square meter
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1 newton
Correct Answer(s)
A. 1 pascal
A. 1 newton per square meterExplanation
The correct answer is 1 pascal and 1 newton per square meter. Pascal is the SI unit of pressure, defined as one newton of force per square meter of area. Therefore, 1 pascal is equal to 1 newton per square meter.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Jan 20, 2010Quiz Created by
Kjones