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Types of Forces

Last updated about 1 year ago
18 questions
Complete the questions for a grade
Forces are all around us, but they are invisible and act in pairs, referred to as simultaneous force pairs. We cannot see gravity, yet we feel it and experience it daily. For example, do you ever notice the difference between walking up a flight of stairs as compared to down? The simultaneous force of gravity pulling a person downward while the force of the person pushing on the stairs to move upward can be exhausting. Throwing a football, pushing a heavy box across the floor, sitting in a chair...forces are ever present acting on all objects.
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Forces act alone and not in pairs.

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We can't see most forces.

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What force is responsible for counteracting gravity to keep a book on a table instead of falling through it?

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What is the force exerted by a magnet called?

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When you push or pull an object, you are using which force?

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Which force acts on the movement between two surfaces that are in contact?

In the exciting world of science, we often discuss different types of forces. Today, let's delve into 'contact forces'. These are forces that occur when two objects are in physical contact with each other. The first type of contact force that we'll cover is called 'Frictional Force'. When you rub your hands together really fast, do you notice they warm up? That's because of the frictional force at play! It happens whenever two surfaces move against each other, like when you're pushing a heavy box across the floor. Next, we have the 'Normal Force.' Despite the name, it's not your everyday force. This acts perpendicular to the surfaces interacting with each other. For example, when you place a book on a table, the table pushes back upwards with a force equal to the weight of that book. That's the 'Normal Force' in action. 'Tension Force' is the third type we'll discuss. It's experienced by strings, ropes, or similar objects when they're pulled tight by forces acting from opposite ends. This is why a rope gets tight when you play a game of tug-of-war! Our fourth contact force is the 'Air Resistance Force'. It is the force that air applies to objects when they move through it. Imagine riding a bicycle super fast with the wind blowing against you. That's air resistance! Finally, we have 'Applied Force', which is just the force applied to an object by a person or another object. Like when you push a door open, you're applying force. Understanding these basic types of contact forces is a stepping stone to learning more advanced concepts in physics. Set these into your memory banks, young scientists, for a journey into the amazing world of forces!
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Which force occurs when two surfaces move against each other?

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What force acts perpendicular to the surfaces interacting with each other?

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Which force do we apply on objects by ourselves?

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Which of these forces represent contact forces?

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Which forces can move objects without touching them?

In the fascinating world of science, forces play a crucial role. Forces can be divided into two categories: contact and non-contact. Today, we will dive deep into the realm of non-contact forces. Unlike contact forces, non-contact forces can act from a distance, meaning they don't require physical contact to create an effect. There are three main types of non-contact forces: gravitational force, electrostatic force, and magnetic force. Gravitational force is an appealing force that exists between any two masses, near or far. It's the force that keeps us grounded on Earth and also the one that keeps the Earth revolving around the Sun. Think about why we don't float away into space; we owe it all to gravity! Next is the electrostatic force. This force is exerted by stationary or slow-moving charged particles on other charged particles. Ever wonder why your hair stands up when you rub a balloon against it? That's electrostatic force in action! The balloon gains an electric charge, which it tries to neutralize by attracting opposite charges, your hair, in this case. Lastly, we explore the magical world of magnetic forces. Magnetic force is exerted by magnets on other magnets or magnetic materials. An everyday example would be fridge magnets sticking to your fridge. Remember, though, this force only works on certain materials like iron, nickel, and cobalt. We see and experience these non-contact forces daily, even if we don't realize it. They make a significant impact on the world we live in, from the way we stay on the ground, to how we brush our hair, and even down to how we place our favorite artwork on the refrigerator. Understanding them helps us appreciate the fascinating patterns and systems within our universe.
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Which non-contact force is responsible for keeping us on Earth and planets in their orbits?

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Why does a balloon stick to your hair when rubbed?

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Which force works only on certain materials like iron, nickel, and cobalt?

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Which type of force does not require physical contact to create an effect?

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Classify the following forces as either contact or non-contact forces: Gravity, Tension, Friction, Magnetic

  • Friction
  • Gravity
  • Magnetic
  • Contact Forces
  • Non-Contact Forces
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Sort these into their respective field under contact or non-contact forces: Electric, Drag, Normal, Nuclear

  • Magnetic
  • Normal
  • Non-Contact Forces
  • Contact Forces
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Classify these forces: Friction, Normal, Electric, Applied, Magnetic, Gravitational

  • Normal
  • Electric
  • Gravitational
  • Friction
  • Magnetic
  • Applied
  • Contact Forces
  • Non-Contact Forces