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Units 1, 3 & 4
Vocab Review for Units 1, 3 & 4
| Term | Definition |
|---|---|
| force | a push or pull, which may cause a change in an object's motion |
| gravity | the force of attraction between objects; such as the attraction between Earth and objects on it |
| friction | a force that acts between two touching objects and that opposes motion |
| balanced forces | forces that cancel each other out, because they are equal in size and opposite in direction |
| unbalanced forces | forces that cause a change in an object's motion because they don't cancel each other out |
| balance | a tool used to measure the amount of matter in an object, which is the object’s mass. |
| control | the experimental setup to which you will compare all other setups |
| evidence | information collected during a scientific investigation |
| experiment | an investigation in which all the conditions are controlled to test a hypothesis |
| investigation | a procedure carried out to carefully observe, study, or test something in order to learn more about it |
| microscopic | too small to be seen without using a microscope |
| opinion | a personal belief or judgment based on what a person thinks or feels, but not necessarily based on evidence |
| Science | the study of the natural world through observation and investigation |
| scientific method | the different ways that scientists perform investigations and collect reliable data |
| spring scale | a tool used to measure force |
| variable | any condition that can be changed in an experiment |
| accurate | in measurements, very close to the actual size or value |
| matter | anything that has mass and takes up space |
| volume | the amount of space something takes up |
| temperature | the measure of the average energy of motion of particles of matter, which we feel as how hot or cold something is |
| solid | the state of matter in which a substance has a definite volume and a definite shape |
| liquid | the state of matter in which a substance has a definite volume but no definite shape |
| gas | the state of matter in which a substance does not have a definite shape or definite volume |
| relative density | it determines whether one substance will sink or float in another substance |
| solubility | the ability of a substance to dissolve in another substance |
| mixture | a combination of two or more different substances in which the substances keep their identities |
| solution | a mixture that has the same combination throughout because all its parts are mixed evenly |
Created by:
wmsScience
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