# Science EOG, 5th Grade, Force and Motion

## 31 terms

### 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.

Stored 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.