Terms and Definitions
An aspect of an experiment that changes during the course of the experiment.
What is an experimental variable?
One reason that Lowell thought he saw canals on Mars was this particular visual variable in him during the course of his observations.
What is eye strain?
The name of the saltwater lake located inland between the countries of Israel and Jordan where the water is so dense that people can float without expending any effort.
What is the Dead Sea?
In the year 2014, there were ________________ officers in Crimeville.
Which year had 45 officers in Crimeville?
The variable of part of an experiment to which all others will be compared.
What is the control (of an experiment)?
In designing an experiment it is important to determine all the _____________________ _______________________.
What are experimental variable?
A type of graph that records individual data as points on a graph.
What is a line graph?
The year 2019.
Which year saw the most police officers?
Experiments in which information about the test is kept from the participants to reduce bias.
What is a blind experiment?
Often, scientists want to include _______________ in order to learn something by comparing the experimental results using them?
What are variables?
_______________ graphs help to report trends in what is being studied.
What are line graphs?
In the years 2011 and 2018.
In which years were there about the same amount of officers?
Experiments in which neither the experimenters nor the participants know the objects' identities in the setup.
What is a double-blind experiment?
These are the three kinds of variables that are usually in an experiment.
What are independent, dependent, and controlled variables?
This gives you information about a graph so you can better read it.
What is a legend?
The amount of officers dropped by about twenty.
Between 2011 and 2014 the amount of officers dropped how much?
A type of graph that shows data in a circular form, divided into sectors that represent different categories or proportions of the whole.
What is a circle graph?
In the experiment with the egg, water, and salt, these two things were the experimental variables.
What were the amount of salt and the amount of water?
A ______________ ___________ is helpful when you want to easily visualize the data.
What is a bar graph?
There were over ______ officers in the years 2011, 2012, 2017, 2018, 2019.
Were there over fifty officers in the years 2011, 2012, 2017, 2018, 2019?