Physical Science Unit Review

Front

What is the Conservation of Momentum?

Back

The principle that the total momentum of a closed system remains constant if no external forces act on it.

Tags

NGSS.HS-PS2-2

Front

What is acceleration?

Back

Acceleration is the rate at which velocity changes over time.

Tags

NGSS.MS-PS2-2

Front

What is a pulley?

Back

A simple machine that consists of a wheel on an axle or shaft that is designed to support movement and change the direction of force.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or configuration, calculated as PE = mgh (mass x gravity x height).

Tags

NGSS.MS-PS3-2

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv² (1/2 x mass x velocity squared).

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Front

What is the First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net external force.

Front

What is the Universal Gravitation?

Back

The law stating that every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Front

What is an inclined plane?

Back

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

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another.

Front

What is work in physics?

Back

Work is done when a force is applied to an object and the object moves in the direction of the force, calculated as Work = Force x Distance.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5