Unit 1 intro to science Flashcards
define data
evidence that scientific inquiry is based on
what are the 2 different types of data in science
- Quantitative Data
- Qualitative Data
what is quantitative data
numerical measurements
what is qualitative data
recorded descriptions
what are the steps of the scientific method
- notice something (observation)
- ask why (question)
- propose an explanation for the observations (hypothesis)
- what can be done to test hypothesis (prediction)
- scientific test (experiment)
- was the hypothesis supported or rejected (conclusion)
define variables
factors that vary in an experiment
what are the 2 types of variable in an experiment
- Independent Variable
- Dependant variable
what is a independent variable
factor manipulated buy scientist (constantly being changed)
what is a dependant variable
factor that is affected by the independent variable (data that is being collected)
what is a controlled experiment
experimental group compared with a control group
what is a experimental group
the group an experiment is being done on
what is a control group
the group that is not being experimented on
why is it better to have a larger experiment group
the results will be more accurate because there is a higher variability
what are clinical trials
tests done on humans
what is a placebo
treatment that doesn’t contain the medication being tested
what is a double blind trial
neither the subjects or the scientist know who is in which group
what types of studies are there
- Experimental Study
- Observational Study
what is a experimental study
scientists manipulate factors to see how subjects change/react (hands on)
what is an observational study
scientists observe the subject without manipulating any factors
what are the different ways scientists can get feedback from scientific community
- peer reviewed publications
- seminars, meetings, personal communications
what is science
gain of knowledge to explain natural phenomenon
what is technology
application of scientific knowledge
why is science and technology closely interwoven
- science uses new technology to perform research
- new technology is invented based on new scientific discoveries
