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44 Cards in this Set

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  • Back
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Goal of Science?
to understand the world and universe around us
w&u
Theory?
most logical explanation for events occuring in nature
explain events
Law?
once a theory has passed many tests and is generally accepted by the scientific community, it is a law
passed tests, accepted
Geology?
study of rocks and minerals as well as the origin, history, and structure of earth
r, m, or, his, str.
Meteorology?
study of weather, climate, and phenomena in the atmosphere
w, c, p
Oceanography?
study of oceans including their physical features and life forms
o,pf,lf
Astronomy?
study of characteristics of objects in space (planets, stars, galaxies, black holes, supernovas, nebulae, etc.)
c, o, examples
Supernova?
exploding stars
Nebulae?
clouds of gas where stars are born
Astrology?
NOT a science, practice of trying to predict the future by looking at constellations and planetary alignments
Astro-
of a star
geo-
earth
meteor-
pertaining to air or atmosphere
meteor enters the atmosphere
milli-
thousandth
(.001)
centi-
hundredth
(.01)
kilo-
thousand
(1,000)
-graphy
description of
geography describes the earth
-logy
science of
science is logical
-nomy
systemized knowledge of
solar SYSTEM in astronomy
Scientific Method?
way to solve problems in all branches of science. it is usually but not always followed in a specific number of steps
Step 1 of SM
Purpose, problem, or question for running experiment
Step 2
Research background information on topic
Step 3
Hypothesis- make prediction of what might occur during the experiment
Step 4
Experiment- conduct a fair test
**Fair test
an experiment that tests only one variable at a time
Step 5
Analysis- record data, make graphs or other visual aides
Step 6
Conclusion- summarize your experiment, state results, was hypothesis wrong/right? why?
*Re-experiment
run the experiment several times to see if you get the same results
**Error Analysis
aka Possible Errors- list any potential errors that could have occured during the experiments
Length
Measured in kilometers, meters, centimeters, & millimeters
light year
used to measure objects outside our solar system
travels 300,000 km per sec., 9.5 tirll km in a year
micrometer
millionth of a meter
nanometer
billionth of a meter
used to measure bacteria
angstrom
ten-billionth of a meter
used to measure an atom
volume
amount of space an object takes up
measured in liters
mass
amount of matter in an object
weight
measure of attraction between 2 objects due to gravity
measured in newtons
Mass remains constant while what changes?
weight
C=
(F-32) x 0.5555
F=
(Cx1.8) + 32
Dimensional Analysis
method for converting one unit to another
Conversion factor
fraction that always equals 1
Spectrums of invisible light are?
UV rays, X rays
Mass
amount of matter in an object