lesson 1
the systematic study of natural events and conditions
what is science
a well supported explanation about the natural world
scientific theory
an organized procedure to study something under controlled conditions
experiment
the facts, figures, and other evidence gathered through observations and experiments
data
scientists are curious, creative and _____________
enjoy solving problems
study of energy and all nonliving things, includes physics and chemistry
physical science
representation of something in the natural world
model
process of obtaining information by using the senses
observation
display to organize and compare data in separate categories
bar graph
give one job that involves science
medical, architects, hair dresser, chemist, police, auto engineers
evidence gained from observations
empirical evidence
describes a basic principle of nature that always occurs under certain conditions
scientific law
testable idea or explanation that leads to scientific investigation
hypothesis
shows continuous change over time
line graph
use of tools, machines, materials, and processes to meet human needs
technology
an example of NOT empirical eveidence
beliefs or feelings
would be a reliable source
government site or university site
wants reputation upheld
any factor that can change in an experiment
variable
data on horizonal axis is ______________ variable
independent
application of science and mathematics to solve real life problems
engineering
how scientists show creativity
coming up or designing new experiments
give one type of scientific knowledge expressed as mathematical equation
model or law
2 ways to confirm investigation is valid
peer reviewed and replication
models you can touch and look like what they represent
physical model
first step in engineering design process
identify a need