What is dry friction?

It's a force that opposes the relative lateral motion of 2 solid surfaces in contact

It's a force that deletes the relative lateral motion of 2 solid surfaces in contact

It's a force that depletes the relative lateral motion of 2 solid surfaces in contact

It's a force that raises the relative lateral motion of 2 solid surfaces in contact

What is fluid friction?

It describes the friction between layers of a viscous fluid that are moving relative to each other

It describes the friction between a fluid that is moving

It describes the friction between layers of a heavy fluid that are moving relative to each other

It describes the friction between layers of a oily fluid that are moving relative to each other

What is lubricated friction?

It's a case of fluid friction where a lubricant fluid separates 2 solid surfaces

It's a case of solid friction where a lubricant fluid separates 2 solid surfaces

It's a case of semi solid friction where a lubricant fluid separates 2 solid surfaces

It's a case of semi fluid friction where a lubricant fluid separates 2 solid surfaces

What's skin friction?

It's a component of drag, the force resisting the motion of a fluid across the surface of a body

It's a component of drag of a fluid across the surface of a body

It's a component of drag, the force resisting a fluid across the surface of a body

It's a component of the force resisting the motion of a fluid across the surface of a body

What is internal friction?

It's the force resisting motion between the elements making up a solid material while it undergoes deformation

It's the force resisting motion between the elements making up a solid material

It's the force resisting motion while it undergoes deformation

It's the force between the elements making up a solid material while it undergoes deformation

What happens when surfaces in contact move relative to each other?

The friction between the 2 surfaces converts kinetic energy into thermal energy

The friction between the 3 surfaces converts kinetic energy into thermal energy

The friction between the 2 surfaces converts energy into thermal energy

The friction between the 2 surfaces converts solid energy into thermal energy

What does it mean when friction between 2 kinetic energy into thermal energy?

That it converts heat into work

Why is friction important for land vehicles?

Because they rely on friction for acceleration, deceleration, and changing direction

Because they rely on friction for changing direction

Because they rely on friction for acceleration

Because they rely on friction for deceleration, and changing direction

What causes dry friction?

A combination of inter-surface adhesion, surface roughness, surface deformation, and surface contamination

A combination of inter-surface adhesion and surface roughness

A combination of surface roughness, and surface contamination

A combination of surface deformation and surface contamination

Types Of Friction! Trivia Knowledge Test

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Anouchka

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Questions: 10 | Attempts: 301 | Updated: Nov 16, 2023

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Types Of Friction! Trivia Knowledge Test - Quiz

Did you know that there is more than one type of friction? Do you know the laws that regulate all these types of frictions and their most basic differences? Friction is normally defined as the force resisting the relative motion of solid surfaces or fluid layers. So, what do you think you know about it? Take our quiz and find out now.

Questions and Answers

1.

What is dry friction?
- A.
  
  It's a force that deletes the relative lateral motion of 2 solid surfaces in contact
- B.
  
  It's a force that depletes the relative lateral motion of 2 solid surfaces in contact
- C.
  
  It's a force that opposes the relative lateral motion of 2 solid surfaces in contact
- D.
  
  It's a force that raises the relative lateral motion of 2 solid surfaces in contact
Correct Answer
C. It's a force that opposes the relative lateral motion of 2 solid surfaces in contact

Explanation
Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact. This means that when two solid surfaces are in contact and trying to slide past each other, dry friction acts in the opposite direction to prevent or resist their motion. It is a force that hinders or opposes the movement between the surfaces, resulting in resistance and making it difficult for the surfaces to slide smoothly.

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2.

What is fluid friction?
- A.
  
  It describes the friction between layers of a viscous fluid that are moving relative to each other
- B.
  
  It describes the friction between a fluid that is moving
- C.
  
  It describes the friction between layers of a heavy fluid that are moving relative to each other
- D.
  
  It describes the friction between layers of a oily fluid that are moving relative to each other
Correct Answer
A. It describes the friction between layers of a viscous fluid that are moving relative to each other

Explanation
Fluid friction refers to the resistance or force that occurs between layers of a viscous fluid when they are in motion relative to each other. Viscous fluids are those that have a high resistance to flow, such as honey or syrup. This friction is caused by the interaction and sliding of molecules within the fluid, resulting in a resistance to the fluid's movement.

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3.

What is lubricated friction?
- A.
  
  It's a case of solid friction where a lubricant fluid separates 2 solid surfaces
- B.
  
  It's a case of fluid friction where a lubricant fluid separates 2 solid surfaces
- C.
  
  It's a case of semi solid friction where a lubricant fluid separates 2 solid surfaces
- D.
  
  It's a case of semi fluid friction where a lubricant fluid separates 2 solid surfaces
Correct Answer
B. It's a case of fluid friction where a lubricant fluid separates 2 solid surfaces

Explanation
Lubricated friction refers to a case of fluid friction where a lubricant fluid is used to separate two solid surfaces. The lubricant fluid reduces the friction between the surfaces by creating a thin film that acts as a barrier, allowing the surfaces to slide more easily against each other. This type of friction is commonly used in various applications, such as in engines, machinery, and bearings, to reduce wear and heat generation.

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4.

What's skin friction?
- A.
  
  It's a component of drag of a fluid across the surface of a body
- B.
  
  It's a component of drag, the force resisting the motion of a fluid across the surface of a body
- C.
  
  It's a component of drag, the force resisting a fluid across the surface of a body
- D.
  
  It's a component of the force resisting the motion of a fluid across the surface of a body
Correct Answer
B. It's a component of drag, the force resisting the motion of a fluid across the surface of a body

Explanation
Skin friction refers to a component of drag, which is the force that resists the motion of a fluid across the surface of a body. In other words, it is the force that acts in the opposite direction to the motion of the fluid, making it harder for the fluid to flow smoothly over the surface of the body. Skin friction is a result of the interaction between the fluid molecules and the surface of the body, causing a resistance to the fluid's motion.

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5.

What is internal friction?
- A.
  
  It's the force resisting motion between the elements making up a solid material while it undergoes deformation
- B.
  
  It's the force resisting motion between the elements making up a solid material
- C.
  
  It's the force resisting motion while it undergoes deformation
- D.
  
  It's the force between the elements making up a solid material while it undergoes deformation
Correct Answer
A. It's the force resisting motion between the elements making up a solid material while it undergoes deformation

Explanation
Internal friction refers to the force that resists the motion between the elements that compose a solid material while it undergoes deformation. This force occurs within the material itself and hinders the movement of its constituent parts as they change shape or position. It is important to consider internal friction when studying the behavior of solids under stress or strain, as it influences their mechanical properties and can affect their overall performance.

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6.

How many types of frictions are there?
- A.
  
  5
- B.
  
  4
- C.
  
  3
- D.
  
  7
Correct Answer
A. 5

Explanation
There are five types of frictions.

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7.

What happens when surfaces in contact move relative to each other?
- A.
  
  The friction between the 3 surfaces converts kinetic energy into thermal energy
- B.
  
  The friction between the 2 surfaces converts energy into thermal energy
- C.
  
  The friction between the 2 surfaces converts solid energy into thermal energy
- D.
  
  The friction between the 2 surfaces converts kinetic energy into thermal energy
Correct Answer
D. The friction between the 2 surfaces converts kinetic energy into thermal energy

Explanation
When surfaces in contact move relative to each other, friction is generated. Friction is a force that opposes the motion between the surfaces. This friction converts the kinetic energy, which is the energy of motion, into thermal energy, which is the energy associated with heat. Therefore, the correct answer is that the friction between the two surfaces converts kinetic energy into thermal energy.

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8.

What does it mean when friction between 2 kinetic energy into thermal energy?
- A.
  
  That it converts heat into work
- B.
  
  That it converts fire to heat
- C.
  
  That it converts work to heat
- D.
  
  That it converts heat to fire
Correct Answer
C. That it converts work to heat

Explanation
Friction between two objects converts kinetic energy into thermal energy by converting work into heat. When two objects rub against each other, the friction between them causes the kinetic energy of the objects to be transformed into heat energy. This is because the resistance created by friction generates heat due to the molecules of the objects vibrating and colliding with each other. Therefore, the correct answer is that friction converts work to heat.

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9.

Why is friction important for land vehicles?
- A.
  
  Because they rely on friction for acceleration, deceleration, and changing direction
- B.
  
  Because they rely on friction for changing direction
- C.
  
  Because they rely on friction for acceleration
- D.
  
  Because they rely on friction for deceleration, and changing direction
Correct Answer
A. Because they rely on friction for acceleration, deceleration, and changing direction

Explanation
Friction is important for land vehicles because it allows them to accelerate, decelerate, and change direction. Without friction, the tires would not be able to grip the road surface, making it difficult for the vehicle to move forward or slow down. Friction also helps in maintaining control and stability while turning, as it provides the necessary force to counteract the centrifugal force acting on the vehicle. Therefore, friction plays a crucial role in the overall performance and maneuverability of land vehicles.

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10.

What causes dry friction?
- A.
  
  A combination of inter-surface adhesion and surface roughness
- B.
  
  A combination of surface roughness, and surface contamination
- C.
  
  A combination of inter-surface adhesion, surface roughness, surface deformation, and surface contamination
- D.
  
  A combination of surface deformation and surface contamination
Correct Answer
C. A combination of inter-surface adhesion, surface roughness, surface deformation, and surface contamination

Explanation
Dry friction is caused by a combination of factors including inter-surface adhesion, surface roughness, surface deformation, and surface contamination. Inter-surface adhesion refers to the attraction between the molecules of two surfaces in contact, which can create resistance to motion. Surface roughness refers to the irregularities or unevenness on the surface, which can increase friction. Surface deformation occurs when the surfaces come into contact and deform under pressure, leading to increased friction. Surface contamination refers to the presence of foreign particles or substances on the surface, which can also contribute to friction.

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Current Version
Nov 16, 2023

Quiz Edited by
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Aug 19, 2019

Quiz Created by
Anouchka