Notes

Kelvin: The SI unit used to measure temperature.kilogram: The SI unit for mass.mass: The amount of matter in an object.meter: The SI unit for length. rate: A ratio of two different kinds of measurements; the amount of change of one measurement in a given amount of time. SI: International System of Units, related by multiples of ten; designed to provide a worldwide standard of physical measurement.volume: The total amount of space an object occupies. weight: A measurement of force that depends on gravity; measured in newtons. The first step is usually asking a question. Then you would perform an investigation.Then you would collect your evidence, such as noting how Once you have your evidence, you can provide some explanations.Then you would communicate your results.

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control group: the part of an experiment that does not receive the factor being tested and is then used to compare results

dependent variable: the variable that is measured and affected during the experiment, and which is "dependent" on the independent variable

hypothesis: a possible explanation of or answer to a scientific question that is based on prior knowledge or research, and is testable

independent variable: the variable that is changed by the researcher

scientific inquiry: any process used to ask and answer questions about the natural world.

scientific question:a question that is based on observations and can be answered through an investigation

system: a group of related objects that interact and form a complex whole







scientific question

hypothesis

independent variable and dependent variable

control group

procedure

conclusion

descriptive investigations, the benefitsare that they're less expensive and less time consuming since it mostly involves observations, no Descriptive investigations can help indicate if another type of further investigation would be worthwhile. The limitations are that it cannot show cause-and-effect relationship It doesn't explain why something happens because

Comparative investigations provide large amounts of information. Many observations plus comparisons, experimental investigations are best for showing cause-and-effect relationships. You can control the variables, which allows isolation of an independent variable, to show that the independent variable is what's changing the dependent variable. This can also be repeated or replicated as many times as you want. The limitations are that it can lack practicality.Sometimes reproducing something in a lab would be

The three types of scientific investigations are descriptive, comparative, and experimental. Descriptive investigations make observations only about a system. In a comparative investigation, a researcher collects data to make a comparison or determine a relationship between objects. In an experimental investigation, an experiment is performed to gather data that either supports or refutes the hypothesis.

hypothesis

variables

Experimental investigations are the best type of scientific investigation to demonstrate cause-and-effect relationships because they contain independent and dependent variables. The independent variable can be isolated and manipulated, producing a change (or no change) in the dependent variable. Experimental investigations also involve a control group, a group that does not receive the factor being tested, which is then used for comparison.

Scientific inquiry is the process used to ask and answer questions about the natural world. It can be used by anyone and involves asking a question, performing an investigation, collecting evidence, providing explanations, and communicating the results.

question

prediction

conclusion