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Find an example of…
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Definition
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Examples
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a pure element
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material consisting of only one type of atom (as listed on periodic table)
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carbon – diamond in a ring or graphite in a pencil
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a colloid
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a mixture of tiny substances that are dispersed in one another but do not settle out
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milk (curds & whey), Jello (protein & water), fog (water & air)
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an acid
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substance that produces or donates hydrogen ions in a solution
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vinegar, citrus fruit
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a chemical change
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a change that occurs when the atoms of a substance are rearranged to make a new substance
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vinegar mixed with baking soda, baking a cake, rusting nail
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condensation
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matter phase change of a gas to a liquid
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drops of water on outside of a cold glass, dew drops on grass on a cool morning
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a first class lever
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simple machine that has a rigid arm that turns around a point (fulcrum), first class levers have the fulcrum in the middle of the resistance and effort forces
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scissors, hammer, pliers
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kinetic energy
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energy of motion
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anything moving – person walking, waving hand, running water
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Newton’s First Law of Motion
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an object at rest stays at rest and an object in motion stay in motion, unless acted upon by an outside force (inertia)
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a book on a table does not move unless something (like a hand) moves it, a car breaks suddenly and its passengers jerk forward
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friction
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resisting force that opposes motion of an object as it passes by another object
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tires breaking against a road, rubbing hands together, shoe bottoms against floor
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the Doppler effect
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change in frequency of wave motion due to the motion of the wave source or the receiver
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vehicle driving down road (listen how the sound changes as the car drives closer then passes by)
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an arthropod
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animals without vertebra that have jointed legs and segmented bodies
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spider, ant, crab
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flora
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plant life of a given place or time
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any plant – fern, rose bush, grass
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weathering
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the break-down of earth’s material through chemical and mechanical means
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broken rocks, pot holes that form in road during winter, marble stones damaged by acid rain
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a cumulus cloud
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puffy, white to grey clouds that can develop vertically indicating approaching thunderstorms
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on a calm day look for puffy, cotton ball, like clouds; on a day of approaching storms look for tall, towering clouds
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a mineral
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natural, inorganic solid, with a set chemical composition and crystalline structure
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quartz (various forms – amethyst stone, white/clear rock), salt
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a constellation
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groups of stars that form patterns in the night sky
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Ursa Major (big dipper or bear) Andromeda, Orion (the hunter)
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