Scientific Method
Which access do you plot the independent variable on?
x axis
What is 3700 in scientific notation?
3.7 x 10^3
How many g are in 87 mg?
0.087
What is a dependent variable?
A variable that changes because of the independent variable; it is the results of your experiment
Why is it important to publish your research?
So peers can view your results and confirm your conclusions
How many variables should you change in an experiment?
one
Write this number in scientific notation: 0.00034
3.4 x 10^-4
How many cm are in 22 km?
2.2 x 10^6
What is peer review?
a process of scientists examining other scientists' work and research
The more precise a measurement is...
A. The more sigfigs their are
B. The less sigfigs there are
B. The less sigfigs there are
Which variable is plotted on the y axis
dependent
How would you write 300,000,000 in scientific notation?
3.0 x 10^8
42 grams = ? cg
2,500 cg
What is an independent variable?
It is the one thing you change in the experiment.
What is the difference between an inference and an observation?
an inference is a conclusion based on evidence and reasoning; an observation is made by paying close attention to gain information
What is a hypothesis?
a proposed answer to a question that can be tested
When would you use bar graphs?
when comparing a set of measurements, amounts, or changes.
A beaker contains 3.2 L of water. The beaker's volume is how many mL?
3,200 mL
What is a quantitative observation?
An observation that includes measurements and numbers
What is the difference between a theory and a law?
A theory is a well tested explanation for a set of observations; a law is a statement summarizing patterns found in nature
What is a control variable?
These are variables that need to stay the same throughout an experiment
How do models benefit scientific investigations?
They represent ideas, events, and objects
What is the SI base unit for length?
What is the SI base unit for mass?
What is the SI base unit for volume?
meters
grams
liters
What is a qualitative observation?
It involves using the five sense (taste, touch, smell, site, hear)
When would you use a line graph?
to show trends and how data changes over time