| Word Wall Vocabulary 7th Grade |
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area - the measure of an object’s surface controlled variable - the part of the experiment that stays the same dependent variable - the part of the experiment that changes because of the independent variable gram - metric unit for mass hypothesis - an educated guess independent variable - the part of the experiment that is changed inference - explanation based on prior knowledge and observation law - accepted as fact - based on observation length - width, height, thickness, or distance liter - metric unit for liquid volume mass - amount of matter in an object meniscus - the curvature of the surface of the water meter - metric unit for length observation - using the five senses to examine an object predict - what you think you will observe in the future SI - the International System of Units technology - any tools that meet human needs theory - an accepted hypothesis - based on inference volume- the amount of space an object takes up |
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adrenal gland - controls kidney function and increases blood pressure and heart rate during times of stress cerebellum - coordinates the actions of all your muscles and maintains balance. cerebrum - controls speech, memory, thought, and processes information from the senses endocrine system - controls body functions by using chemicals from glands hormone - chemical messenger released in the blood to control body functions medulla - controls involuntary body activities nervous system - gathers and interprets information and responds to that information as needed neuron - nerve cells pancreas - gland in the endocrine system that controls blood-glucose level thyroid -
increases the rate in which body uses energy |
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circulatory system - transport nutrients, gases, hormones, and wastes through the body digestive system - breaks down food and gets rid of waste integumentary system - protects the interior of the body by keeping good stuff (water and organs) in and bad stuff (viruses) out lymphatic system - collects extra fluid from cells and fights pathogens muscular system - works with the skeletal system to allow movement of the body respiratory - take in oxygen and let out carbon dioxide skeletal system - gives the body support and protects major organs from damage
urinary system - produces, stores, and eliminates urine; filters blood
and balances water levels |
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cell - basic unit of all living things cell membrane - a barrier that encloses and protects the cell - regulates what goes in and out of the cell consumer - organisms that eat other organisms decomposer - organisms that feed on decaying organisms nucleus - an organelle that contains the cell’s deoxyribonucleic acid organism - living thing producer - organisms that make their own food sexual
reproduction - two parent reproduction in which
offspring shares characteristics of both parents |
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cellular respiration - cells use oxygen to produce energy from food diffusion - movement of particles from higher density to lower density osmosis - the movement of water through a membrane
photosynthesis -
the
process a plant uses carbon dioxide, water, and sunlight to create glucose
and oxygen |
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heredity - passing of traits from parents to offspring meiosis - reproduction of sex cells (egg and sperm) mitosis - reproduction of all cells except sex cells pedigree - tool used to trace traits in a family Punnett Square - tool used to organize possible offspring combinations taxonomy - the
science of classifying organisms |
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abiotic - non-living parts of the environment that affect organisms adaptation - a characteristic that improves an organism’s ability to survive biotic - living parts of the environment that affect organisms evolution - the change in the hereditary features of a population over time
natural selection -
the process by which organisms that are best adapted to
their environment survive and reproduce |
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archaebacteria - unicellular prokaryotes that have been on Earth for at least 3 billion years classification - division of organisms into groups or classes based on characteristics eubacteria - single-celled organisms that can live in soil, water, or in the human body fungi - eukaryotic, multicellular organisms that absorb nutrients from their surroundings after breaking them down with digestive juices kingdom- the broadest or most generalized division of biological classifications plantae - multicellular, eukaryotic organisms that are usually green and make sugar through photosynthesis protista - single-celled or multicellular, eukaryotic organisms that are not plants, animals, or fungi
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