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Science- ch 1

a process of gathering knowledge about the natural world science
the study of matter and energy physical science
stuff everything is made of matter
ability to do work energy
study of all forms of matter, including how matter interacts with matter chemistry
looks mostly at energy and the way that energy affects matter physics
ways in which scientists answer questions and solve problems scientific method
application of science for practical purposes technology
representation of an object or system model
model that looks like what it represents physical model
model made up of mathematical equations and data mathematical model
model of systems of ideas or are based on making comparisons with firmiliar things to explain an idea conceptual model
a unifying explanation for a broad range of hypotheses and observations that have been supported by testing scientific theory
a summary of many different experiments scientific law
how are laws and theories different? laws tell you what happens, not why it happens
what system is used for measuring? SI system (metric)
what does SI stand for? international system of units
what is used to measure length? meter
what is used to measure mass? kilogram
what is mass? amount of matter in something
what is used to measure volume? liters or mililiters= liquids cubic meters or centimeters= solids
what is volume? amount of space that something occupies
what is the formula for density? mass(g) ------- volume (ml/cm3)
what is density? amount of matter in given volume?
what is used to measure temperature? celius or kelvin
what is temperature? how hot or cold something is
Created by: kfran0112