click below
click below
Normal Size Small Size show me how
AN#Sci#2011#2#Def
Science Topic 2 Definitions 2011
| Question | Answer |
|---|---|
| Mass | The amount of matter in something |
| Weight | The force of gravity pulling on matter |
| Force | A push, pull or twist applied to an object |
| Acceleration | The rate at which an object changes speed |
| Net force | The directional sum of all forces acting on an object |
| Friction | A rubbing force that slows moving objects |
| Distance | How far it is between 2 objects |
| Speed | How quickly an object is moving |
| Time | How long it takes between 2 events |
| Average speed | The total distance traveled divided by the total time taken |
| Velocity | Speed in a given direction |
| Inertia | The tendency of an object to stay still or keep moving |
| Momentum | The product of mass and velocity |
| Newton's Laws | The 3 laws proposed by Sir Isaac Newton that describe motion |
| Data | Information in numerical form |
| Graph | Visual way of displaying data |
| Ticker timer | Leaves dots on a paper tape to record motion |
| Circular motion | Motion of an object round and round |
| Harmonic | Motion of an object going to and fro |
| Pendulum | Swinging object that can be used to measure time |
| Terminal velocity | Air resistance which slows falling objects near earth |
| Constant speed | Same time to travel same distance |
| Reaction time | Time taken for driver to react to danger (moving from accelerator to the brake) |
| Reaction distance | Distance car travels during reaction time |
| Braking distance | Distance taken for car to stop when brakes are applied |
| Stopping distance | Total distance taken to stop |