Scentific Method Flashcards
Chromatography
Separates pigments in a solution by color
Put pigment above water line
Cameron
Bell
Gel electrophoresis
A test to compare DNA or proteins
DNA is cut with enzymes then place in wells
Smaller fragments fall to the bottom of plate
Compare banding patterns to read
Indicator
A chemical that changes color with another chemical
Ex: iodine amber
Iodine starch blue/black
Control group
Normal w medicine studies plasebo used for comparison
Dependent variable
What to measure to answer the research question
Put on y Axis
Amount of
Rate of
Hypothesis
Educated production
if we do this then this will happen
Independent variable
One per experiment
One factor that you change
Category
Type of
Placebo
Used for the control group in the medicine studies
Saline shot or sugar pill
Sample size
Large groups of test subjects
Most have a large sample size.
size to have more accurate and reliable data
Reduse effect of individual differences
Theory
A hypothesis that has been supported many times
Similar to a law but more complex understanding
Compound light microscope
Magnifies a transparent object
Stain first
Dichotomous key
Use to separate classes of organisms
Dissection
Cut animals to study there specimens
Learn about the organs
Speshal tools are required
Graduated cylinder
Measure liquid useing volume
Magnification
Enlarges View of the object
Decreases field of view
Mass
Quantity of matter
The amount of space an object takes up
Metric ruler
Way to measure the length of an object in metric units
Model
A representation of an concept that is hard or impossible to view
Atoms
Stain
Way to view a slide under a microscope
Enhance view
Triple beam balance
Find mass and grams
Of almost every objects
Volume
The amount of space an object takes up
Conclusion
Decision of date
Data about results
Control
Points used for comparison
References to the data
Controlled experiment
Only differences between is deliberate
Variation
Data
Info gathered from experiment
Observation
Data that is collected from your Senses
Look at table see it is fizzy
Bias
Belief influenced by assumptions
Inference
Conclusions based on observations
Peer review
Several scientists review the experiment until there sure it’s true
