Types of Forces in Science: Gravity and Surface Tension

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Why is a ship able to stay on the surface of the sea despite gravity pulling us towards the center of the Earth?

  • The ship has a force field protecting it from gravitational pull.
  • The ship's buoyancy counteracts the force of gravity. (correct)
  • The ship is too heavy for gravity to affect it significantly.
  • The ship generates an anti-gravity field.

What force causes the spinning coin to come to a complete stop?

  • Centripetal force
  • Electromagnetic force
  • Frictional force (correct)
  • Magnetic force

What type of force is gravity according to the text?

  • Nuclear force
  • Non-contact force (correct)
  • Electromagnetic force
  • Contact force

Why isn't the woman sitting down pulled through her chair by gravity?

<p>Normal force from the chair balances the force of gravity. (B)</p> Signup and view all the answers

What is the force that acts when you push or pull an object according to the text?

<p>Applied force (B)</p> Signup and view all the answers

Why do all objects fall onto the ground when released from a height according to the text?

<p>Because gravity pulls objects towards the center of the Earth (C)</p> Signup and view all the answers

What do forces always act in according to the text?

<p>Pairs (D)</p> Signup and view all the answers

Which type of force allows objects to float in a liquid?

<p>$F_{buoyancy}$ force (B)</p> Signup and view all the answers

"The woman sitting down" scenario highlights the balance between:

<p>'Normal' and 'Gravitational' forces (D)</p> Signup and view all the answers

Match the forces with their descriptions:

<p>Applied force = Force that acts when you push or pull an object Gravity = Force that pulls us towards the centre of the Earth Frictional force = Force that opposes the motion of objects Normal force = Force exerted by a surface to support the weight of an object</p> Signup and view all the answers

Match the following actions with the forces involved:

<p>Spinning a coin with fingers = Applied force Object coming to a complete stop = Frictional force Woman sitting down without falling through chair = Normal force Objects falling onto the ground from a height = Gravity</p> Signup and view all the answers

Match the scenarios with the correct explanations:

<p>Ship staying on the surface of the sea = Buoyant force exceeds gravitational force Coin spinning continuously = Balanced forces acting on it Object sliding down a slope = Gravity and frictional force in opposite directions Person lifting a heavy box = Applied force overcoming gravitational force</p> Signup and view all the answers

Match the concepts with their characteristics:

<p>Net force = Resultant force after considering all forces acting on an object Action-reaction pair = Forces always occur in equal and opposite pairs Force of tension = Force transmitted through a string, rope, or cable when pulled tight Air resistance = Force opposing the motion of objects through air</p> Signup and view all the answers

Match the activities with the forces being demonstrated:

<p>Dropping an object from a height = Gravity Sliding an object on a smooth surface = Minimal frictional force Stretching a rubber band = Force of tension Running against strong wind = Air resistance</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser