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Types of Forces in Science: Gravity and Surface Tension

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Types of Forces in Science: Gravity and Surface Tension

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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?

Normal force from the chair balances the force of gravity. Signup and view all the answers

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

Applied force Signup and view all the answers

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

Because gravity pulls objects towards the center of the Earth Signup and view all the answers

What do forces always act in according to the text?

Pairs Signup and view all the answers

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

$F_{buoyancy}$ force Signup and view all the answers

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

'Normal' and 'Gravitational' forces Signup and view all the answers

Match the forces with their descriptions:

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 Signup and view all the answers

Match the following actions with the forces involved:

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 Signup and view all the answers

Match the scenarios with the correct explanations:

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 Signup and view all the answers

Match the concepts with their characteristics:

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 Signup and view all the answers

Match the activities with the forces being demonstrated:

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 Signup and view all the answers