5th Grade Word List - Science

of the air or atmosphere; produced by or found in the air; performed in the air

relating to or located in the atmosphere

forces are balanced when the forces pushing (or pulling) an object in one direction are the same size as the forces acting in the opposite direction

the state of the sky when it is covered by clouds

people who buy goods or services

an organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem

the state of being clear of trees; the removal of trees

act of depositing, especially laying down of matter by natural process

system formed by the interaction of a community of organisms with their physical environment

corrosion; a gradual decline of something

a low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding

the act of flowing or streaming; continuous progression; dominant course of successive events or ideas

clash in opinion; rubbing against; conflict

property of matter by which it tends when at rest to remain so, and when in motion to continue in motion, and in the same straight line or direction

mutually dependent; reliant on one another

features that make up the earth's surface, such as a plain, mountain, or valley

a device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form

follow a winding and turning course; move aimlessly and idly without fixed direction

product of a body's mass and its velocity; impelling force or strength; impetus

small concavity; a position particularly well suited to the person who occupies it

a model considered worthy of imitation; something regarded as a normative example

picture or likeness obtained by photography

foreign substance that makes something dirty, or impure, especially waste from human activities

someone who manufactures something

be or provide a memorial to a person or an event; a compilation of the known facts regarding something or someone

reprocess; use again after processing

run away, usually includes taking something or somebody along; run off as waste; leave suddenly and as if in a hurry

the phenomenon of sediment or gravel accumulating

having or composed of only one thing, element, or part; not involved or complicated

be at an angle; incline; gradient

concerned with detailed, precise description of a place or region

branch that flows into the main stream; tending to bring about; being partly responsible for

being or thrown out of equilibrium; debits and credits are not equal

the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land

erosion; exposure; action of the elements on a rock in altering its color, texture, or composition