Forces & Motion Vocabulary Review

Imagine you're sliding on a giant slide! What is the invisible force that slows you down and eventually stops you?

• Gravity

• Friction

• Acceleration

• Inertia

Answer explanation

Friction is the force that opposes the motion of an object by acting in the opposite direction of the object's movement.

Imagine you're an astronaut floating in space. What invisible force would pull you back towards the Earth if you got too close?

• gravity

• magnetism

• centrifugal force

• electromagnetism

Answer explanation

The force that pulls objects towards the center of the Earth is gravity.

Let's slide into some physics! What type of force do you think friction is?

• Contact force

• Nuclear force

• Electromagnetic force

• Gravitational force

Answer explanation

Friction is a type of contact force, as it occurs when two surfaces are in contact and resists the relative motion between them.

Let's dive into the world of forces and motion! Can you tell me what 'gravity' is all about?

• Oh, it's quite the opposite of a hug! Gravity is that cheeky force pushing two masses away, making everything float off like balloons from the earth's center.

• Imagine the earth giving everything a gentle pull, a cosmic hug if you will. Gravity is this incredible force pulling two masses together, guiding objects to dance towards the earth's heart.

Answer explanation

Gravity is the force of attraction between two masses, and it is responsible for the motion of objects towards the center of the earth.

Imagine you're a superhero, and your mission is to stop two villainous surfaces from sliding away! What incredible force would you use to accomplish this feat?

• magnetism

• gravity

• inertia

• friction

Answer explanation

The force that occurs when two surfaces rub against each other is called friction, which is the correct answer.

Let's dive into the world of physics! Can you tell the difference between balanced and unbalanced forces? It's like comparing a calm sea to a stormy one!

• Balanced forces always result in a change in motion, while unbalanced forces never result in a change in motion.

• Balanced forces result in no change in motion, while unbalanced forces result in a change in motion.

• Balanced forces only occur in space, while unbalanced forces only occur on Earth.

• Balanced forces cause objects to move faster, while unbalanced forces cause objects to slow down.

Answer explanation

Balanced forces result in no change in motion, while unbalanced forces result in a change in motion.

Imagine you're a superhero flying through the sky or a submarine navigating the deep blue sea. What is the force you encounter that opposes your motion through the air or water?

• Friction

• Drag

• Thrust

• Lift

Answer explanation

The force that occurs when an object moves through a fluid, such as air or water, is called drag.

🚀 Imagine you're a superhero! What kind of force do you use when you push or pull something to save the day?

• magnetic force

• electrical force

• mechanical force

• gravitational force

Answer explanation

The correct force that occurs when an object is pushed or pulled is mechanical force.

Let's dive into the world of physics! Can you tell me what 'net force' is all about when we talk about forces pushing and pulling things around?

• Net force is like the total path an object dances along when it's moving.

• Think of the net force as the push or pull an object shows off while it's moving.

• Is net force the groove or speed an object maintains in motion?

• Imagine all the forces as dancers in a group. The net force is the lead dancer, guiding the object's movement by considering the strength and direction of every dancer in the troupe.

Answer explanation

The net force is the overall force acting on an object, taking into account the magnitude and direction of all individual forces.

Imagine you've got an object just chilling and not moving. What's the force keeping it in its lazy state?

• Centripetal force

• Static friction

• Inertia

• Kinetic friction

Answer explanation

Static friction is the force that occurs when an object is at rest, preventing it from moving.