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5th science review

5th grade science vocabulary

TermDefinition
weather the state of the atmosphere at a particular time and place
climate the average weather of a location over a period of years
water cycle the recycling of water between Earth's surface and atmosphere
precipitation water that falls from the atmosphere as rain, snow, hail or sleet
cloud a mass of tiny water droplets or ice crystals in the air
cold front a place where a cold air mass bumps up against a warm air mass
meteorologist a scientist who studies weather
warm front a place where a warm air mass meets a colder air mass and slowly rises over it
low pressure associated with lousy, rainy, cloudy, warm weather
high pressure associated with clear, cool, nice weather
3 ingredients for a Hurricane low pressure, warm oceans, moist air
organism a living thing
cell the smallest part of a living thing that can carry out all the processes of life
system a group of organs that work together
respiratory system the body system that allows us to exchange gases with the air
digestive system the body system that breaks down food so it can be used for energy
circulatory system the transport system for blood, water and waste to and from our cells ( passes through the hearts and lungs)
skeletal system the body system of bones that give the body structure and support
muscular system the body system used to move the body (connected to bones)
nervous system the body system that controls all the other body systems
trait a quality or characteristic of a living thing
tissue a group of cells that do a certain job
organ a group of tissues that work together to do a big job for an organism
genes the sets of instructions found inside every cell of each living thing
ecosystem all the living and non living things in an area
estuary a body of water in which freshwater from a river meets and mixes with salt water from the ocean; coastal areas
producer a living thing that makes its own food through photosynthesis
consumer a living thing that gets energy by eating other living things
decomposer a living thing that gets energy by breaking down wastes and dead organisms and return their nutrients to the soil (mushroom,fungi, bacteria, worms)
scavenger a living thing that eats leftover dead animals (vultures, flies)
food chain a model that shows the path of energy as it flows from one living thing to the next
food web a model that shows how several food chains connect together
energy pyramid a diagram that shows how the amount of energy changes as it moves through a food chain or food web
predator an animal that hunts other animals for food
prey an animal that is hunted by other animals for food
abiotic factors nonliving things such as sunlight, soil, rainfall, water and wind
biotic factors living things such as bacteria, plants and animals
adaptations a change by which a plant or animal becomes better suited to its environment
chemical change a change in which one or more new types of matter form - irreversible (rusting,burning, cooking, spoiled food)
conduction the transfer of thermal energy(heat) between things that are touching
conductor a material through which heat can move easily
convection the transfer of thermal energy (heat) by the movement of liquids or gases
energy the ability to make things move or change force - a push or a pull
friction a force that acts in the opposite direction between surfaces that touch each other, slowing it down
gravity a force that pulls objects toward each other
insulator a material that heat does not move through easily (wood, cork, cloth, plastics)
mass the amount of matter that makes up an object
matter anything that has mass and takes up space
momentum the property that a moving object has due to its mass and its motion
motion a change in an object's position
physical change a change in which no new materials form - reversible (crumbling paper, melting ice, evaporating water)
state of matter the form that matter has- such as solid, liquid or gas
weight a measure of the pull of gravity on an object's mass
Created by: bbrinkley