Physical Science Pre Test

Front

What is a wheel and axle?

Back

A simple machine consisting of a circular wheel attached to a cylindrical axle, allowing for easier movement or lifting of objects.

Front

What is potential energy?

Back

The energy stored in an object due to its position or state, which can be converted into kinetic energy.

Front

What is kinetic energy?

Back

The energy of an object in motion, dependent on its mass and velocity.

Front

What is friction?

Back

A force that opposes the motion of an object, often producing heat.

Front

What is static friction?

Back

The friction that exists between a stationary object and the surface it is on, preventing it from moving.

Front

What is Newton's second law of motion?

Back

The law stating that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is an inclined plane?

Back

A flat surface tilted at an angle to help lift objects with less effort.

Front

What is a lever?

Back

A simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

What is a gear?

Back

A rotating machine part with teeth that mesh with another gear to transmit torque and change direction of motion.

Front

What is rolling friction?

Back

The friction that occurs when an object rolls over a surface, generally less than sliding friction.