| A | B |
|---|
| mass | (1) the amount of matter in an object. (2) the resistance something has being moved. (3) a measurement that depends only on what something is made of and not on its location. |
| weight | (1) a measurement that depends on the mass of something AND on the location of that thing.(2)the measure of the pull of gravity. |
| volume | the amount of space something takes up. |
| matter | anything that has mass and volume. |
| gram | (1) the standard unit of metric mass. (2) the metric mass of a raisin. |
| liter | (1) the standard unit of metric volume. (2) the metric volume close to one quart. |
| meter | (1) the standard unit of metric distance. (2) the metric distance close to one yard. |
| millimeter | (1) the metric thickness of a paperclip wire. (2) 1/10 of a centimeter. (3)1/1000 of a meter. |
| centimeter | (1) the metric distance across the head of a thumbtack. (2) 1/100 0f a meter |
| milliliter | (1) the metric volume of a marble. (2) 1/ 1000 of a liter. |
| independent variable | the factor that is selected, measured or observed first in an experiment. |
| dependent variable | the factor that is measured or observed during an experiment to see how it responds to another factor. |
| controlled variable (constant) | a factor that could affect the dependent variable in an experiment, but is kept from doing so. |
| hypothesis | a testable prediction of how the independent variable will affect the dependent variable in an experiment. |
| element | a type of matter made up of only one kind of atom. |
| atom | the smallest piece or unit of an element that still behaves like that element. |
| molecule | (1) two or more atoms joined together. (2) the smallest piece or unit of a compound that still behaves like that compound. |
| compound | a type of matter made up of more than one kind of atom. |
| cell | the basic unit of all living things. |
| organelle | a structure in a cell that carries out a specific function. |
| cell membrane | the organelle that surrounds the cell and controls what enters and leaves. |
| nucleus | the organelle that contains the DNA of the cell membrane and is its control center. |
| cytoplasm | the gel-like filling between the nucleus and the cell membrane which contains the cell organelles. |
| diffusion | the spreading out of molecules from a place of high concentration to a place of low concentration. |
| osmosis | the diffusion of water through a cell membrane. |
| vacuole | an organelle for storing material in a cell. |
| cell wall | a structure that provides support for cells. |
| chloroplast | an organelle found only in plant cells that carries out photosynthesis. |
