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Final Study Guide 1- The Nature of Science
Terms in this set (15)
What is science?
The investigation and exploration of natural events and of the new information that results from those investigations
What are the parts/stages of scientific inquiry?
Ask questions, Hypothesize and Predict, Test Hypothesis, Analyze Results, Draw Conclusions, Communicate Results
What is the difference between a scientific law and a scientific theory?
A Theory is an explanation of observations or events based on knowledge gained from many observations and investigations. It attempts to explain why something happens. A Law describes a pattern or an event in nature that is always true. It states something that will happen.
What is critical thinking?
It is comparing what you already know with the information you are given in order to decide whether you agree with it.
What is the difference between a description and an explanation?
A description is a spoken or written summary of observations. It describes exactly what you saw. An explanation is an interpretation of observations. It interprets what you saw. Ex. Description- Squirrel is gathering acorns Interpretation- It is storing food for later.
What is the SI System?
The International System of Units and measurement that we call the metric system.
What are the 8 main SI prefixes and their values?
mega (1,000,000), kilo (1,000), hect (100), deka (10), Unit or Base (1) deci (.1), centi (.01), milli (.001), micro (.000001)
How do you convert between units in the SI system?
You multiply or divide by a power of 10
What is the difference between precision and accuracy? Give an example.
Accuracy is a description of how close a measurement is to an accepted or true value. Precision is a description of how similar or close measurements are to each other. Ex: If you have a close group of darts on the edge of a dartboard, they are precise because they are close to each other but NOT accurate because they are far from the center target.
What are the significant digits?
The # of digits in a measurement that are known with a certain degree of reliability
What is bias in scientific inquiry?
Bias is intentional or non-intentional prejudice toward a specific outcome. You have to sample, repeat, and study to minimize bias.
What is a variable? A control? A controlled experiment?
A Variable is any factor in an experiment that can change or have more than 1 value. Control is when the independent variable does not change. Controlled experiment has two groups, the experimental and the control
What is the difference between independent variables and dependent variables?
The I.V. is the factor you want to test. The D.V. is the factor measured or observed during an experiment
When graphing, where are the independent and dependent variables placed?
The I.V. goes on the x-axis and the D.V. on the y-axis
How do you read a graduated cylinder? A triple beam balance?
Graduated Cylinder- place it at eye level and read at the meniscus. Triple Beam Balance- slide the weights until the object is balanced. Then add up all the weights.
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