Science EOG, 5th Grade, Force and Motion

Momentum

Is the measure of how hard it is to slow or stop a moving object.

Laws of motion

Three laws formulated by Sir Issac Newton that describe how objects move in relation to the forces acting on them.

Potential Energy

Stored Energy.

Kinectic Energy

Moving Energy

Inertia

When an object remains at rest or in motion unless acted by a force.

Friction

Forces that slowdown or stop movement.

Simple Machines

Is a tool or machine that makes work easier.

Balanced forces

Are forces that have a net force of zero or equal weight and making objects stay in place.

Unbalanced forces

have a force that is stronger on one side than the other, causing movement of an object.

Motion

How a position changes over time.

Force

A push or a pull.

Energy

The ability to do work.

Gravity

A force of attraction between any two masses pulls objects down to the center of the earth.

Weight

A measurement of how heavy something is.

Work

When an object moves, this is being done.

Lever

A tool that helps lift weights with less effort.

Pulley

Is a form of wheel and axel and changes the directon of the force.

Wheel and Axel

Can lift heavy weights for us with only a little effort on our parts.

Acceleration

A change in motion caused by unbalanced forces or a change in speed.

Velocity

An objects speed in a particular direction.

Mass

The amount of matter / weight in an object.

Incline Plane

Makes it easier to slide a load upward then to lift it directly.

Screw

An incline planed wrapped around a cylinder. Its main purpose is to raise a load over the thread.

Weight

A measure of a pull of gravity of an object.

Wedge

It can lift a heavy load over a short distance or can split a log.

Position

The location of an object.

Speed

A measurement of distance over time.

Thrust

The force that moves an object forward.

Drag

The opposite force on a object (tries to slow it down).

Design

To imagine and create the best way to solve a problem.

Model

Representation that shows the workings of an object or system.