Scientific Knowledge
Fieldwork and __________ are two types of scientific investigations.
Experiments
Factors that are changed in an experiment.
independent variable
Descriptive information that is not expressed as a number.
qualitative
The middle number in an ordered data set.
median
A test model of the product.
prototype
You are observing birds in your neighborhood. What tool would you need?
binoculars
Information and measurements gathered from experimentation that can be used in calculating and reasoning.
data
Description that includes a number and a unit.
measurement
The number that occurs most frequently in a data set.
mode
Use of tools, machines, materials, and processes to meet human needs.
technology
What type of investigation would a scientist studying a sinkhole use?
fieldwork
Any factor that can change in a scientific investigation.
variable
Descriptive information that is expressed as a number.
quantitative
The average. The sum of all the values in a data set divided by the number of items in the data set.
mean
Application of science and math to solve real life problems.
engineering
An explanation in science that has a lot of evidence to back it up is a scientific
Theory
Changes as the result of the changes to the independent variable.
dependent variable
What tool would you use to measure temperature?
thermometer
A study was done to find if different tire treads affect the braking distance of a car. What is the independent variable?
tire treads
What is the fourth step in the design process?
building a prototype
Scientists never say a theory is proven or not, they only say if the evidence
Supports or fails to support.
Process of getting information using the senses.
observation
The exactness of a measurement.
precision
The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. What was the dependent variable?
amount of pollution
This is done after the best potential solution is chosen.
building a prototype