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8th physical science

8th science flashcards

Qualitative Measurement that can be recorded by descriptive language.
Quantitative Measurement that can be recorded by a measurement unit.
Inference An interpretation of what you think will happen.
Hypothisis Describes what you will think will happen (an educated guess.
Control Part of an experiment that is kept the same for comparison.
Dependent variable Part that changes.
Independent variable A factor in the control that is intentionally changed.
Data Results in the form of graphs,charts and more.
Communication Talking and and messaging.
Experiment Testing the hypothesis.
Scientific inquary The process of an experiment.
Physical change Change that does not change the substance. (melted iron)
Chemical change Change that does change the substance. (from wood to ash)
Atom The basic unit of everything.
weight The amount of gravity on an object.
Mass The amount of matter in an object.
Newton Unit of force required to move a kilogram at a rate of 1 meter squared.
Mechanical advantage The ratio of the force produced by a machine to the applied input force.
Newtons 1st law All objects that are at rest will stay at rest and all objects in motion will stay in motion.
Newtons 2nd law The more acceleration applied the more force will be applied.
Newtons 3rd law if a body exerts force on an object or other body then the object or person will exert a force at the same time as the first.
Gravity Force that pulls objects towards each other. (Earth)
Accuracy The closeness to the wanted or expected results/guess.
Calibration A comparison between two units.
Graduated cylinder A tool to measure a liquid (measures volume).
Liquid A type of matter that have free flowing molecules.
Mass The amount of space an item takes up.
Matter Anything that takes up space.
Meniscus The lower part of a liquid in a graduated cylinder (An illusion on a paper representation).
Newton (measure unit) A unit associated by newtons second law.
Precision The closeness to the wanted or expected results/guess.
Triple beam balance A tool to measure weight.
Unit A measurement of a type of matter.
Volume The measurement of a liquid.
Weight The amount of gravity on an object.
Mixture Two different substances combined but separate (Oil and water).
Compound Two different substances combined to form a new compound (burning magnesium into ash)
Heterogeneous mixture Two different substances not chemically combined but not able to be distinguished.
Element Simplest pure substance.
Created by: 3083241