Significant Figures, Scientific Notation, and Converting Units
Units of Measurement
Miscellaneous
100
What is another word for "an educated guess about the answer to a question."
Hypothesis
100
True or False:
Mass and weight are measurements of essentially the same thing.
FALSE
100
How many significant figures are in the number 120?
2
100
Which of these is NOT a base unit: Time, length, density, temperature, or mass?
density
100
What is the correct tool for measuring temperature in the lab?
Thermometer
200
What do we call units that are combinations of base units?
derived units
200
What do we call something you notice?
An observation
200
Write 5.04 x 10^-4
0.000504
200
What is the SI unit for measuring length?
Meter or centimeter
200
What are the 3 main branches of science
Biology, Physical Science, and Earth science
300
What is the difference between pure science and technology? Name one way.
Technology makes the lives of people better, and is done by engineers or technicians.
Pure science creates new knowledge, and is done by researchers.
300
What kind of graph is best for showing parts of a whole group?
Pie chart
300
How many significant digits are in the number 0.70100?
5
300
What unit do we use to describe volume?
Liter or centimeters cubed
300
For a _?_ to be valid, it must be simple and clear, have repeatable results, and be useful for making predictions.
Scientific Theory
400
What prefix on a unit means 1/1000?
Milli
400
What kind of numbers do we use in science to describe numbers that are extremely small or extremely large?
Scientific Notation
400
How many centimeters are in 150 m?
15,000 cm
400
What word is used to describe the space an object takes up?
volume
400
Put the steps of the scientific method in order:
perform an experiment and collect data
make observations
analyze data
ask a question
draw a conclusion about the validity of your hypothesis
develop a hypothesis
make observations
ask a question
develop a hypothesis
perform an experiment and collect data
analyze data
draw a conclusion about the validity of your hypothesis
500
What is the difference between precision and accuracy?
Precision is how closely you measured, or how many decimal places you bother to measure to.
Accuracy is used to describe if your measurements are close to the real value.
500
What word describes something that can change in an experiment?
Variable
500
If you have 3, 411 mL, how many L do you have?
3.411
500
What word is used to describe the amount of matter in an object.
Mass
500
Give at least 2 reasons that numbers are really useful in science:
Numbers describe events clearly
Math is a universal language
Numbers can be used to build models
Numbers can be used for predictions