Ms. Fedak's Class Scott Foresman Science Grade 5 Vocabulary Chapter 13
Order by
20 terms
Terms | Definitions |
|---|---|
 Speed | Describes how far an object moves during a certain amount of time (p. 408) |
| Velocity | The speed and direction of an object's motion (p. 409) |
| Force | A push or pull that acts on an object (p. 410) |
| Magnetism | A force that pushes and pulls on other objects (p. 412) |
| Electricity | An object is electrically charged when it gains or loses electrons |
| Friction | A contact force that resists the movement of one surface past another surface (p. 414) |
| Work | Energy used when a force moves an object (p. 416) |
| Power | The rate at which work is done (p. 417) |
| Equilibrium | The state in which the net force is zero (p. 419) |
| Newton's First Law of Motion | An object at rest will stay at rest until another object acts upon it, and an object moving in a straight line at a constant speed will continue to move in a straight line at a constant speed until a net force acts upon it (inertia) |
| Inertia | The tendency of an object to resist a change in motion (p. 420) |
| Newton's Second Law of Motion | Describes the relationship between acceleration (the rate at which an object's velocity changes over time), mass, and net force |
| Acceleration | The rate at which the velocity of an object changes over time (p. 422) |
| Newton's Third Law of Motion | Every force has an equal and opposite reaction, and they always occur in pairs |
| Machine | A device that changes the direction or the amount of effort needed to do work (p. 426) |
| Simple Machine | Machines that only have a few parts - they make it easier to do work |
| Pulley | A kind of simple machine consisting of a rope that fits onto a wheel and used to change the direction of a force (p. 426) |
| Wheel and Axle | A simple machine consisting of a wheel that revolves around a post, or axis (p. 427) |
| Lever | A type of simple machine consisting of a bar that turns on a support called a fulcrum (p. 428) |
| Inclined Plane | A form of simple machine consisting of a slanted surface along which objects are easier to push upward than to lift straight up (p. 429) |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.