The number 16.5 has this many significant digits.
What is three?
This describes the amount of matter in a substance or an item.
What is mass?
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?
This is the number of variables that can be tested in any single experiment.
What is one?
This would be measured using a triple beam balance.
What is mass?
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?
The number 5500 would have this number of significant digits.
What is 2?
This measures the amount of space taken up by a substance or item.
What is volume?
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?
This practice of repeating an entire experiment to compare results.
What is replication?
What is a pie chart or pie graph?
This is a measure of the pull of gravity on an object.
What is weight?
The number 17.04 would have this many significant digits.
What is 4?
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).
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?
This type of evidence comes from observation and experimentation.
What is empirical evidence?
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?
This describes something that appears scientific but does not adhere to the principles of scientific inquiry and is not falsifiable.
What is pseudoscience?
This would be the number of significant digits in 0.067.
What is 2?
When measurements are all close to one another and repeatable, they can be described in this way.
What is precise?
This is the variable that will be measured or observed at the end of the experiment.
What is the dependent variable?
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.
This type of graph would show change over time.
What is a line graph?
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?
The number 1.4700 would have this many significant digits.
What is 5?
When a measurement is close to the accepted or actual amount, it is called this.
What is accurate?
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?
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.
This is the formula used to calculate density.
What is D=M/V
Density=Mass divided by Volume
This states what will happen given certain circumstances. It does not try to explain why it will happen.
What is a scientific law?
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.
These two measurements are needed to calculate density.
What is mass and volume?
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)?
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.
This would be the axis on which the independent variable would be placed.
What is the x axis?
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.