Scientific Inquiry
What is a proposed, testable explanation for an observation called?
Hypothesis
What variable does the scientist purposely change?
Independent variable
Which graph is best for showing change over time?
Line graph
What is the abbreviation for milliliter?
How many significant figures are in 0.147?
3
What is the first step of scientific inquiry?
Question
What variable is measured as the result of the change?
Dependent variable
Which graph is best for comparing different categories?
Bar graph
Convert 5 L to mL.
5,000 mL
How many significant figures are in 3.070?
4
What step comes after conducting an investigation and collecting data?
Analysis
What do we call factors that are kept the same during an experiment?
Controlled variables/constants
Which graph is best for showing parts of a whole?
Pie chart
Convert 2500 m to km.
2.5 km
Round 43.659 to three significant figures.
43.7
Does a scientific law explain why something happens or describe what happens?
Describes WHAT happens.
A student changes hours of sunlight and measures plant height. What is the dependent variable?
Plant height
Why are graphs often more useful than a table of numbers?
Patterns/trends are easier to see
Convert 75 mL to L.
0.075 L
Write 186,000 in scientific notation.
1.86 × 10⁵
What is the correct order of the five steps of scientific inquiry?
Question → Hypothesis → Investigation → Analysis → Conclusion
Measurements are very close to each other but far from the accepted value. Are they accurate, precise, both, or neither?
Precise only
Name three qualities of good scientific data.
Any 3: specific, detailed, accurate, carefully collected, timely
Convert 5.6 kg to mg.
5,600,000 mg
Calculate 6.38 × 2.0 using the correct number of significant figures.
13