Forces Quiz

What is a force?

• A push or pull

• A movement with gravity

• A way to increase speed

• A type of energy

Answer explanation

A force is defined as a push or pull acting on an object. This definition encompasses all types of forces, making 'A push or pull' the correct choice, while the other options do not accurately describe what a force is.

Tags

NGSS.HS-PS2-1

Which force pulls the planets and the moons together?

• Friction

• Gravity

• Applied

• Tension

Answer explanation

The force that pulls planets and moons together is gravity. It is the natural phenomenon by which all things with mass are attracted to one another, keeping celestial bodies in orbit.

Tags

NGSS.HS-PS2-4

What type of force is gravity?

• Contact

• Noncontact

• Friction

• Applied

Answer explanation

Gravity is a noncontact force because it acts at a distance without the need for physical contact between objects. Unlike contact forces, such as friction or applied forces, gravity pulls objects toward each other through space.

Tags

NGSS.HS-PS2-4

In which direction does gravity act on a car driving on a flat road?

• Left

• Right

• Downward

• Upward

Answer explanation

Gravity always acts downward towards the center of the Earth. Therefore, for a car driving on a flat road, the force of gravity pulls it downward, making 'Downward' the correct answer.

Tags

NGSS.HS-PS2-4

What force prevents a parked car from moving downward?

• Friction

• Applied

• Normal

• Gravity

Answer explanation

The normal force acts perpendicular to the surface of the ground, counteracting gravity and preventing the parked car from moving downward. Friction helps with motion but is not the primary force keeping the car stationary.

Which force resists the forward motion of a car?

• Friction

• Gravity

• Tension

• Normal

Answer explanation

Friction is the force that opposes the motion of the car as its tires roll on the road. It acts in the opposite direction to the car's forward motion, making it the correct answer.

Tags

NGSS.HS-PS2-1

Air resistance or drag is a type of...

• Gravity

• Friction

• Tension

• Applied

Answer explanation

Air resistance, or drag, is a force that opposes the motion of an object through a fluid, making it a type of friction. It differs from gravity, tension, and applied forces, which have distinct characteristics.

What direction does friction act in compared to motion?

• Same direction

• Opposite direction

• Upwards

• Downwards

Answer explanation

Friction always acts in the opposite direction to the motion of an object. This opposing force helps to slow down or stop the object, making 'opposite direction' the correct answer.

The force that pulls objects toward each other is called...

• Friction

• Gravity

• Normal

• Tension

Answer explanation

The force that pulls objects toward each other is called gravity. It is the fundamental force responsible for the attraction between masses, unlike friction, normal, or tension forces, which act differently.

Tags

NGSS.HS-PS2-4

What force is responsible for a box sitting on a table?

• Normal force

• Gravity

• Friction

• Tension

Answer explanation

The normal force is the support force exerted by a surface, acting perpendicular to the object. In this case, it counteracts gravity, allowing the box to sit on the table without falling.

Tags

NGSS.HS-PS2-1