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science test 9
| Question | Answer |
|---|---|
| bar of lever | used to move objects by wedging |
| load of lever | counter weight used to move objects |
| fulcrum of lever | balancing point of lever to gain leverage |
| input arm of lever | part of lever wedged under what is to be moved |
| output arm of lever | part of lever weight is applied to move objects |
| inclined plane | ramp used to make work easier |
| wheel and axle | simple machine using motion of one wheel and lift |
| pulley | simple machine that uses two wheels pulling in opposite directions |
| examples of forces/properties | contact, balanced, magnetic, drag |
| examples of energy/properties | kinetic, mechanical, potential |
| buoyancy | upward force by liquid |
| solid | state of matter with size and shape |
| liquid | state of matter that flows and pools |
| gas | state of matter with no size or shape that difuses |
| thrust | reaction force |
| semimetals | one of two main groups of periodic table |
| chemical reaction | new substance formed by rearranging of atoms |
| negative acceleration | motion changes at slower rate |
| neutral substances | neither acid or base |
| weight | pull of gravity on an object by another |
| convection | heat transfer caused by moving liquid or gas |
| friction | force that resists motion |
| generator | converts mechanical energy to electrical |
| tension force | pulling between rope/cable and object |
| vacuum | empty space void of matter |
| unbalanced forces | forces that cause work to be done |
| atomic theory of matter | all mater is made of tiny unseen particles |
| first law of motion | an object stays in motion unless an outside force acts upon it |
| second law of motion | acceleration is determined by forces and mass |
| third law of motion | every action has an opposite and equal reaction |
| law of conservation of energy | energy can only be transferred, not created or destroyed |
| law of conservation of mass | mass does not change after an interaction |
| prototype | testing model |
| motion | movement or change in position of matter |
| constraint | progress limitation or boundary |
| force | push or pull |
| load | object lifted or moved by a machine |
| neutron | neutral atomic particle - no charge |
| proton | positive atomic particle |
| electron | negative atomic particle |
| streamlining | science to reduce drag |
| colloid | mixture with floating or suspended particles |
| skimming | method to separate solids |
| acceleration | change in speed or direction |
| polarity | opposite poles working to create force field |
| engineer | scientist who develops technology |
| energy | ability to do work |
| mechanical advangconductionage | increase of force |
| motion graph | represents motion over time |
| speed | measure of distance over time |
| mixture | two or more substance chemically combined |
| solution | dissolving of one mixture into another |
| conduction | heat transfer using contact |
Created by:
ksabatino
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