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MiXela Science terms

YWLA summer terms

Pollution the introduction of harmful substances into the environment.
acid precipitation when burning fossils fuels causes rain, sleet or snow to become contaminated with acid.
erosion is the process by which wind and water move soil from one place to another.
deforestation is the process of clearing forest
nonrenewable resources an energy resource that cannot be replaced after they are used, or can only be replaced only over thousands or millions of years.
fossil fuels formed from the buried remains of plants and animals that lived millions of years agao.
renewable resources energy resources that can be used and replaced in a short amount of time.
physical property a property of matter that can be observed or measured without changing the identity of the matter.
chemical property a property of matter that describes a substance based on its ability to change into a new substance.
physical change a change that affects on or more physical properties of a substance, but does not change the substance.
chemical change a change that occurs when one or more substances are changed into something new.
states of matter the physical forms in which a substance can exist. States include solid, liquid, gas, and plasma.
solid a state in which matter has a defined shape and volume.
liquid a state in which matter takes the shape of its container.
gas a state in which matter changes in both shape and volume.
change of state the change of a substance from one state to another.
motion an object's change in position relative to a reference point over time.
speed the rate at which an object moves
velocity the speed of an object in a particular direction.
acceleration the rate at which velocity changes; an object can accelerate if it's speed direction, or both change.
force a push or pull on an object
friction a force that opposes motion between two surfaces that are touching.
gravity a force of attraction between objects
weight a measure of the gravitational force exerted on an object. It's value can change with the location of the object in the universe.
mass the amount of matter that something is made of. Its value does not change no matter where you are in the universe.
Created by: mr.miller