VOCAB
Fact
An objective, verifiable observation
quantitative
uses numbers to measure something
Control Group
"Normal Group"
group used for comparison in experimental group
Relationships between IV and DV
DV depends on IV
if IV does something DV changes because of it
Steps of technological design process and criteria that must be considered
Problem identification --> solution design --> implementation --> evaluation
Criteria: time constraint, cost constraint, materials you have to work with
Principle
A statement base on a repeated observation that describes the aspect of the world
IV
CHANGE
CAUSE
TECHNOLOGY
advancement of society
Difference between observation and inference
Observation is objective
Inference is subjective
Law
Broad concept
HOW
accepted as facts
DV
EFFECT
CHANGES IN RESPONSE TO IV
ENGINEERING
uses math and science to solve problems
Difference between Accuracy and Precision
Why is it important to have both
Precision: Consistent and specific
Accuracy: correct
Then you know your data is both correct and consistent
Theory
and explanation of an observed situation
WHY
never become a fact or law
C/C Variable
(constant/controlled)
the aspects that are held constant/consistent
Define science
based on evidence
our understanding is being built on new findings
supported by evidence
Steps in designing and conducting an experiment
observations --> ask questions --> conduct background research --> construct a hypothesis --> test hypothesis --> analyze data --> draw conclusions
Qualitative
Describes qualities
Experimental Group
Groups that are being tested
EX. of a hypothisis
If a student hold their breath longer; Then the amount of carbon dioxide they exhale will increase
EX. of a scientific investigation design with IV and DV
how high you can jump
IV: Shoes
DV: how high they jump