Sig Digs
Measuring Up
Experiments
Science Sense
Cool Tools
Word Power
100
The number 16.5 has this many significant digits.
What is three?
100
This describes the amount of matter in a substance or an item.
What is mass?
100
This description of how an experiment is done should be detailed and complete so that other scientists can replicate the experiment.
What is the procedure?
100
This is the number of variables that can be tested in any single experiment.
What is one?
100
This would be measured using a triple beam balance.
What is mass?
100
A liquid that is more _____________ sink to the bottom while one that is less ___________ will rise to the top. This word fills in both blanks.
What is dense?
200
The number 5500 would have this number of significant digits.
What is 2?
200
This measures the amount of space taken up by a substance or item.
What is volume?
200
This prediction of what will be shown by the data of an experiment is written before the experiment is conducted and should be testable (supported by the data or refuted by the data).
What is the hypothesis?
200
This practice of repeating an entire experiment to compare results.
What is replication?
200
This type of graph would be useful for showing parts of a whole in percents.
What is a pie chart or pie graph?
200
This is a measure of the pull of gravity on an object.
What is weight?
300
The number 17.04 would have this many significant digits.
What is 4?
300
An item is found to have a density of .36 g/cm3 , so it will (sink/float) in water.
What is float? The density is less than that of water (1 g/cm3).
300
This is the variable that is changed by the researcher at the beginning of the experiment. It is what is being tested.
What is the independent variable?
300
This type of evidence comes from observation and experimentation.
What is empirical evidence?
300
Although it will not be exactly like the real item, this tool can be used by scientists to predict what the actual thing will do when the actual item is too large, too expensive, or too dangerous to experiment with directly.
What is a model?
300
This describes something that appears scientific but does not adhere to the principles of scientific inquiry and is not falsifiable.
What is pseudoscience?
400
This would be the number of significant digits in 0.067.
What is 2?
400
When measurements are all close to one another and repeatable, they can be described in this way.
What is precise?
400
This is the variable that will be measured or observed at the end of the experiment.
What is the dependent variable?
400
Saul puts a can of diet soda and a can of regular soda in an cooler filled with water. He notices that the diet soda floats, and the regular soda sinks. Out of density, mass, and volume-this would be the same for the can of diet soda and the can of regular soda.
What is volume? The cans would take up the same amount of space, but they would not have the same mass or density.
400
This type of graph would show change over time.
What is a line graph?
400
This is a scientific explanation supported by a great deal of evidence that has been collected over a long period of time.
What is a scientific theory?
500
The number 1.4700 would have this many significant digits.
What is 5?
500
When a measurement is close to the accepted or actual amount, it is called this.
What is accurate?
500
This would be a variable that is kept the same in all of the experimental groups to ensure that the test is fair.
What is a control variable?
500
Scientific findings can NEVER achieve this percentage of reliability.
What is 100%? All scientific theories and findings are uncertain and can be changed or discarded as new evidence becomes available.
500
This is the formula used to calculate density.
What is D=M/V
Density=Mass divided by Volume
500
This states what will happen given certain circumstances. It does not try to explain why it will happen.
What is a scientific law?
600
If you are solving the following multiplication problem, this many significant digits should be in your answer.
15.3 x 5000. = ?
What is three? The answer to a multiplication or division problem should not have more significant digits than any of the input numbers.
600
These two measurements are needed to calculate density.
What is mass and volume?
600
The type of relationship shown on the scatter plot graph below between time spent studying and test grades.
What is a direct relationship (positive correlation)?
600
Zach measures the density of a candy bar. He then eats half of the candy bar. This would best describe the change in density-
A. It is half of what it was.
B. It is unchanged.
C. It is twice what it was.
What is B? The mass and volume have both been decreased by half, but the density remains the same.
600
This would be the axis on which the independent variable would be placed.
What is the x axis?
600
Multiple trials and replicating an experiment would change the reliability of the findings in this way.
What is to increase the reliability of the findings? If an experiment has multiple trials or is replicated and the findings are similar, those findings are more reliable.