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Chapter 5 Vocabulary
Matter- Properties and Changes
Term | Definition |
---|---|
Science | Way of learning about the natural world that provides possible explanations to questions and involves using a collection of skills. |
Scientific Theory | A possible explanation for repeatedly observed patterns in nature supported by observations and results from many investigations. |
Scientific Law | A rule that describes a pattern in nature but does not try to explain why something happens. |
System | Collection of structures, cycles, and processes that related to and interact with each other. |
Life Science | Study of living systems and how they interact. |
Earth Science | study of Earth systems and systems in space, including weather and climate systems, and the study of nonliving things such as rocks, oceans, and planets. |
Physical Science | study of matter, which is anything that takes up space and has mass, and the study of energy, which is the ability to cause change. |
Technology | use of science to help people in some way. |
Hypothesis | reasonable guess that can be tested and is based on waht is known and what is observed. |
Infer | to draw conclusion based on observation |
Controlled experiment | involves changing one factor and observing its effect on one thing while keeping all other things constant. |
Variable | factor that can be changed in an experiment. |
Independent Variable | variable that is changed in an experiment |
Dependent Variable | variable that changes as a result of a change in the independent variable. |
Constant | variable that is not changed in an experiment |
Model | any representation of an object or an event that is used as a tool for understanding the natural world; can communicate observations and ideas, test predictions, and save time, money, and lives. |
Critical Thinking | involves using knowledge and thinking skills to evaluate evidence and explanations. |
Data | information gathered during an investigation; recorded in the form of descriptions, tables, graphs, or drawings. |