Parts of an experiment
The process of obtaining information by using the five senses
Observation
the study of the natural world
data
a model built to test a product is called a
prototype
is science an ongoing process?
yes
a testable idea or explanation that leads to a scientific investigation
hypothesis
What are the three categories of natural sciences?
biology, geology, physics
list two of the three types of graphs we discussed in class
circle graph, bar graph, line graph
The use of tools, materials, or processes to meet human needs is
technology
all living things
This occurs when the scientist who conducted the original investigation repeats their study EXACTLY
repetition
List the TWO places that scientists gather empirical evidence
fieldwork, laboratories
A visual of mathematic representation of an object or system is called a
accepting the risks in exchange for benefits OR giving up one benefit to gain another is called
tradeoff
What is a pugh chart?
a table used to compare the features of multiple items
When another scientist recreates an experiment and it may not yield the same results due to various factors
replication
define empirical evidence
all the measurements and data collected by scientists to support a scientific explanation
What kind of data do circle graphs show?
the parts of a whole- calculated using percentages
a comparison of the risks to the benefits of a decision or technology is called
risk-benefit analysis
Theories can change over time thanks to new forms of ________
technology
Define the following terms:
Independent variable, dependent variable
Independent- "test variable" the factor that is manipulated in the experiment
Dependent- "outcome variable" the factor that changes as a result of manipulation
What is the difference between a scientific law and a scientific theory?
law- explains how the world works-->describes a specific relationship under given conditions in the natural world.
Theory- a well supported explanation of nature-->helps us to understand the laws we observe
What three things are typically included in data tables?
quantities, times, frequencies
evaluation of materials and energy used for the creation and transportation of a product is called
empirical evidence