CFU on August 29, 2024 Flashcards
(25 cards)
what do you do first in the scientific method
notice things
after you notice things you……
ask questions
after you ask questions you……
make inferences/hypothesis
after you make inferences and a hypothesis you……..
collect data
what are the 2 way to collect data
observational and experimental
after you collect data you………
analyze data
what are 2 ways to analyze data?
using graphs and/or statistics
after you analyze data you……
make an evidence based conclusion
after you make a conclusion you……
share your knowledge!
what is a big thing about the scientific method?
learn from others!
what is a model?
a simplified representation of something complicated that is easier to measure, study, visualize, and understand
what are 4 ways to create models
you can build, draw, describe using math or design using computer programming
what is a variable
any part in a system that changes
how many different variables are there in experimental science
3
what are the 3 variables
independent, dependent and control
what is the independent variable
the one part of an experiment you can change on purpose because you think it will affect an observed outcome
what is the dependent variable
the part of an experiment that changes because of the independent variable
what is the control variable
any part of an experimental system that you want to keep constant and unchanging
what variable does the independent variable affect?
dependent
what variable can the scientist change on purpose
independent
how many variables can a scientist change in an experiment
1
why do you have to pay close attention to control variables?
because if you change the control you wouldn’t know what affected what in the experiment
is it important to have a hypothesis before collecting data?
yes, because the hypothesis identifies you independent and dependent variables and how you think they are connected
what is quantitative data
observations that use numbers
