| A | B |
|---|
| matter | anything that takes up space and has mass |
| element | matter that has only one kind of atom |
| mass | amount of matter in an object |
| buoyancy | force exerted on an object that is immersed in a gas or liquid that makes it float |
| mixture | two or more substances blended, but not bonded together |
| position | the location of an object |
| speed | the rate at which something happens |
| gravity | A form of energy that results from the attraction between two objects. |
| potential energy | the energy that an object has as a result of its position or shape |
| reflect | the bouncing of light off a surface |
| electric charge | tiny amount of energy in the particles of matter |
| vibration | a quick back and forth motion |
| property | a way to describe matter: color, shape, oder, hardness |
| atom | one of the tiny particles that make up all matter |
| volume | the amount of space that an object occupies |
| physical change | a change that makes matter look different without becoming a new substance |
| solution | a mixture in which one or more substances dissolves in another |
| motion | a change in the position of an object |
| force | the push or pull that gives energy to an object |
| magetism | a non-contact force that pulls objects containing iron |
| kinetic energy | the energy of motion or energy being used |
| refract | to bend; a change in the direction of a beam of light |
| electric current | the movement of electric charge from one place to another |
| pitch | how high or low a sound is |
| pressure | the force exerted on an object |
| periodic table | a chart that classifies elements by their properties |
| density | the measure of the amount of matter in a certain amount of space |
| states of matter | the forms of matter: solid, liquid. gas |
| chemical change | a change in which new or different kinds of matter are formed |
| relative position | a change in an object's position compared to another position |
| friction | a force that occurs when one object rubs agains another |
| work | something done whenever a force makes an object move |
| thermal energy | the total energy of the particles that make up an object |
| absorb | to take in or to soak up |
| electric circuit | a path through which electric current can move |
| compression wave | wave that has spaces where particles are squeezed together and spaces where particles are spread apart |
