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50 terms

7th Grade Science - Scientific Method Test

STUDY
PLAY
scientific method
basic steps used by scientists in solving problems
theory
most logical explanation for events that occur; although unproven
law
rules that describe a pattern in nature, like gravity
observations
use: senses, tools, qualititves, quantitives
qualitatives
describes qualities or characteristics - color, ordors, sounds, textures
quantitatives
numerical data - mass, density, length, volume, temperature, amount
scientic methods
ways, or steps to follow, to try to solve problems and answer questions
2 types of scientific research
desriptive or qualitive research and experimental research
descriptive research
research based on observations (think of describing)
experimental research
testing a hypothesis, scientific method
parts of experimental research
stating a question, research background information, forming a hypothesis, testing you hypothesis, data collection, analysis/graphs and conclusion
stating a research question
describe the question you want to answer
research background information
find out as much as you can about your problem
forming a hypothesis
states for effect of the independent variable on the dependent variable; if, then statements; use knowledge to form your hypothesis
hypothesis
statement that can be tested
testing your hypothesis/procedure
identify variable; write you materials list; write the procedure
independent variables
sometimes called manipulated variables; variable that is changed; what is being tested
dependent variables
sometimes called responding variables; variable that is being observed and measures
controlled variables
sometimes called constants; not allowed to change;
controls
sample that is treated like the other experimental group except that the independent variable is not applied to it
data collection
create a chart or table to store and organize data; do experiment and record results
analysis/graphs
displays trends, patterns & relationships can be seen; allows us to see if data supports hypothesis or not
trend
changes, increases, decreases in data
patterns
repeated data that is similar
relationships
how one variable affects another
bar graph
used to show comparisons
line graph
used to show changes & trends
conclusions
the final summary of an investigation; includes a restatment of the question and hypothesis, discusses the data, what the data means, problems with the research, ways to carry the research further, why the research is important
celsius
temperature scale used in the metric system
data chart
a place for recording data; may be numbers or pictures
data collection
writing down the observations and results of an investigation numerical data is recorded in data tables, other types of data are recorded in data charts
data table
a place recording quantititive data in rows and columns
data
the observations and results of an experiment; information gathered during an experiment
demonstration
display of a scientific model that simply shows how something works
descriptive research
research based on observations
experimental design
the plan for deciding how to answer a scientific question; the material and procedures used to conduct an experiment
experimental research
investigation that involves variables; scientific test in which data is gathered/compared with the used of variable and often a control
mass
amount of matter in an object
procedure
the step-by-step insturction for conducting an investigation
question/problem
what the scientist is trying to find out; called the Research Question
research
scientific information gathered through observations, surveys
science
a way of learning about the world around us
variable
factor being tested in an experiment
volume
amount of space an object occupies
scientific method acrostic
sarah coughs while peter eats awesome walnuts
constants
variables that could change, but are not allowed to; also called variables
demonstation
display of scientific model that simply shows how something works
x-axis
indepent goes on
y-axis
dependent goes on
circle graphs
a circle divided into sections to display data; each section represents part of the whole; all sections together equal 100%