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Concentration of matter of an object;
number of individuals in the same species that live in a given area;
the mass per unit volume. |
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| A procedure that is carried out and repeated under controlled conditions in order to discover, demonstrate, or test a hypothesis. |
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| Relating to a model of the solar system or universe having the Earth as the center. |
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| Relating to a model of the solar system or universe having the Sun as the center. |
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| A tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation. |
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| The act of reasoning from factual knowledge or evidence. |
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| A systematic process that uses various types of data and logic and reasoning to better understand something or answer a question. |
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| A statement that describes invariable relationships among phenomena under a specified set of conditions. |
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| The amount of matter an object contains. |
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| Substance that possesses inertia and occupies space, of which all objects are constituted. |
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| A systematic description of an object or phenomenon that shares important characteristics with the object or phenomenon. Scientific models can be material, visual, mathematical, or computational and are often used in the construction of scientific theories. |
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| Expressing or dealing with facts or conditions as perceived without distortion by personal feelings, prejudices, or interpretations. |
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| What one has observed using senses or instruments. |
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| A theory, methodology, or practice that is considered to be without scientific foundation. |
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| In scientific research, conducting an experiment to confirm findings or to ensure accuracy. In molecular biology, the process by which genetic material is copied in cells. |
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| A process that uses science process skills as tools to gather, organize, analyze, and communicate information. |
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| A person with expert knowledge of one or more sciences, that engages in processes to acquire and communicate knowledge. |
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| Any of the faculties by which stimuli from outside or inside the body are received and felt, as the faculties of hearing, sight, smell, touch, taste, and equilibrium. |
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| Modified or affected by personal views, experience, or background. |
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| A usually tubular optical instrument for viewing distant objects by means of the refraction of light rays through a lens or the reflection of light rays by a concave mirror. |
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| A set of statements or principles devised to explain a group of facts or phenomena, especially one that has been repeatedly tested or is widely accepted and can be used to make predictions about natural phenomena. |
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| An event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment. |
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| A measure of the amount of space an object takes up; also the loudness of a sound or signal. |
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| The force with which a body is attracted to Earth or another celestial body, equal to the product of the object's mass and the acceleration of gravity. Measured with a spring scale in Newtons. |
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