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science final exam
| Term | Definition |
|---|---|
| volume | the amount of space an object occupies |
| mass | the amount of matter in a object |
| density | the mass per unit volume of a substance |
| water displacement | a method used to find the volume of an irregular object |
| cell | the basic unit of life |
| unicellular | and organism made of one cell |
| multicellular | an organism of many cells |
| specialized cells | cells that perform specific functions |
| cell membrane | controls what enters and what leaves a cell |
| cell wall | provided structure and support to plant cells |
| cytoplasm | the fluid inside a cell where organelles are located |
| nucleus | the control center of the cell |
| mitochondria | organelle that perform cellular reparation and release energy(powerhouse of the cell) |
| chloroplast | organells where photosynthesis occurs |
| vacuole | stores food water and waste |
| homeostasis | maintaining stable interval conditions in the body |
| muscular system | works with the skeletal system to produce moment |
| skeletal system | provide support and helps movement |
| digestive system | breaks down food and absorbs nutrients |
| excretory system | removes waste from the body |
| respiratory system | take in oxygen and removes carbon dioxide |
| circulatory system | transports oxygen, nutrients,and wastes |
| nervous system | sends electrical nerve impulses throughout our the body |
| endocrine system | produces hormone that regulate body function |
| immune system | protects the body from disease |
| asexual reproduction | reproduction involving one parent |
| sexual reproduction | reproduction that involves two parents |
| fertilization | the joining of an egg and sperm |
| polination | transferor pollen to allow plant fertilization |
| tropism | a plants growth rows one e toward or away from a stimulus |
| symbiosis | a close relationship between two different species |
| force | a push or pull |
| gravity | the force of attraction between objects |
| friction | a force that opposes motion |
| kinetic energy | energy of motion |
| potential energy | store energy due to position or shape |
| conservation of energy | energy cannot be destroyed nor created, only transferred |
| static electricity | build up of electic charges on an object |
| electic current | continoues flow of electic charges |
| circuit | a closed path through which electricity flows |
| series circuit | a circuit with a single path for current |
| parallel circuit | a circuit with multiple parts he for current |
| magnet | a material that attracts iron nickel or cobalt |
| magnetic pole | the regions |
Created by:
quinnbarber