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30 Cards in this Set
- Front
- Back
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What is science? |
The intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment. |
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What are the branches of science? |
Earth and space, social science, life science, physical science and formal science. |
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What is scientific inquiry? |
The diverse ways in which scientists study the natural world and propose explanations based on the evidence derived from their work. |
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What are observations? |
The action or process of observing something or someone carefully or in order to gain information. |
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What is an inference? |
A conclusion reached on the basis of evidence and reasoning. |
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What is a hypothesis? |
A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. |
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What is a prediction? |
A thing predicted; a forecast. |
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What are some steps used during scientific inquiry? |
Ask a Question.Do Background Research.Construct a Hypothesis.Test Your Hypothesis by Doing an Experiment.Analyze Your Data and Draw a Conclusion.Communicate Your Results. |
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What is scientific theory? |
A well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation. |
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What is a scientific law? |
A statement based on repeated experimental observations that describes some aspects of the universe. |
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What are the results of scientific inquiry? |
Scientific knoledge |
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What is critical thinking? |
The objective analysis and evaluation of an issue in order to form a judgment. |
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What is the difference between a description and an explanation? |
Explanation tells why something is the way it is, description tells how it is perceived by one or more of the five senses. |
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What is the International System of Units (SI)? |
system of physical units based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten. |
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The SI system is based on multiples of ________? |
10 |
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What are the meanings of the followings SI prefixes (kilo, deci, centi, and milli)? * |
kilometerdecimetercentimetermillimeter |
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Convert 20.5 grams to kg. |
0.0205 |
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Convert 0.6 meters to cm. |
60 |
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What is the difference between precision and accuracy? |
Precision refers to the closeness of two or more measurements to each other. Accuracy is how close you are to the target and repitition of you hitting it. |
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What is scientific notation and when would you use it? |
Scientific notation is needed any time you need to express a number that is very big or very small. |
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Write 149,600,000 in scientific notation. |
1.496 x 108 |
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Write 0.00000028 in scientific notation. |
2.8 x 10 |
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What is percent error and how do you calculate it? |
the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value. |
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What are 3 tools used by scientists and what can they be used for? |
spring scale- weightmortor and pestle- crush substancestest tube- hold liquids/measure |
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What is a controlled experiment? |
a test where the person conducting the test only changes one variable at a time in order to isolate the results. |
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What is a variable? |
a letter replacing a number |
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What is the difference between an independent variable and a dependent variable? |
The value of an independent value can be changed. You cannot change of the value of a dependent variable. |
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What are constants? |
a situation or state of affairs that does not change. |
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What is the difference between the experimental group and control group? |
An experimental group is the group in an experiment that receives the variable being tested. One variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable. |
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What is the difference between qualitative data and quantitative data |
data you know and data that is not confirmed |
