steps
how many steps are there in the scientific method we covered in class?
5
which variable is on which axis?
x - independent
y - dependent
what is a hypothesis?
an educated guess
what measurement system do most scientists use?
metric system
what is magnification
the power to increase an object's apparent size
what are three ways you can organize your data
table, chart, or graph
What is quantitative data and what is qualitative data?
Qualitative data: information that is a characteristic.
Quantitative data: Information that is usually numeric
how is a hypothesis often stated?
as an if-then statement
what are the 2 types of electron microscopes?
Transmission electron microscopes (TEM)
Scanning electron microscopes (SEM)
what is resolution
the power to show detail clearly. (How crisp and clear it is)
Your experiment is testing to see whether plants grow faster in a 30°F or 110°F temperature.
what is your experimental variable?
temperature
List 2 things a controlled experiment needs in order to be valid
All experiments must be able to be replicated
There must be only one experimental variable. In this way, if there are any questions concerning the results of the experiment, you will be able to show that it was caused by one variable.
All experiments should be performed with many trials
All experiments have some error, and this should be minimized
All experiments must have constants
what is a hypothesis based on?
observations and research
If you have a 10x eyepiece and a 8x objective lens, what is the magnification?
80x
what is the independent variable and what is the dependent variable
Independent Variable: The variable that you control
Dependent Variable: the variable that you don’t control and what you measure
In what step of the scientific method would you analyze whether your data does or does not support your hypothesis?
Step 5: Analyze the data and form a conclusion
What is the difference between constants and the control group?
constants are the variables that are kept the same amongst group
the control group is the "normal group" that does not contain the experimental variable and is used to compare to the experimental group(s)
when do you form a hypothesis in the scientific method
step 2/ after making observations
what type of microscope uses a beam of light passing through one or more lenses
A light microscope
what is a controlled experiment?
an experiment that contains only one experimental variable