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31 Cards in this Set
- Front
- Back
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Objective
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based on facts and not influenced by personal feelings.
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Observation
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information gathered with the senses of hearing, smell, touch, taste, and sight.
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Oceanic Zone
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the life zone that includes the open waters of the ocean.
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Oceanography
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the study of the physical properties of oceans
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Organelle
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a structure inside a cell that carries out a specific process of life.
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Osmosis
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diffusion of water across a membrane.
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Oxidation
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a chemical reaction that occurs when a substance reacts with oxygen.
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Pandemic
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an epidemic that spreads across multiple continents or even worldwide.
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Parasite
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An organism that gains nourishment or habitat from the tissues or fluids of another organism.
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Pathogen
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an organism that causes a disease.
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Period
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the horizontal row of elements on the periodic table.
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Periodic table
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a chart that organizes information about all of the known elements according to their properties. The original chart was developed by Dmitri Mendeleev in 1869.
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Pesticides
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chemicals designed to kill organisms (insects, weeds, rodents) that are considered pests.
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pH
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the measure of how acidic or basic (alkaline) a substance is. pH stands for “Powers of Hydrogen”
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Photosynthesis
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the process by which some organisms use light energy to make nutrients
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Physical change
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a change in a substance that does not involve a change in the identity of the substance.
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Physical property
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a characteristic of a substance that can be observed or measured without changing the identity of the substance.
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Pictograph
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a visual display that uses symbols or pictures to represent a numerical value
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Plankton
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tiny organisms that are moved by ocean currents. Baleen whales eat these.
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Plate tectonics
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the theory stating that the Earth is broken into giant chunks of land or ocean floor that can slowly move. Plate tectonics causes continental drift
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Point-Source Pollution
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pollution that comes from a single well identified source
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Pollutant
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any substance or from of energy that can cause harm to the environment and make it unfit for use by organisms.
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Potency
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strength or how powerful a chemical is.
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ppm
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parts per million. A unit used to express the concentration in a solution.
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Precision
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the consistency of a set of measurements.
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Prediction
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a statement suggesting what might happen in the future based on patterns in data and experiences.
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Procedure
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a written step-by-step plan for an experiment
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Producer
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an organism that makes its own food
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Product
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a substance formed during a chemical reaction.
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Property
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any characteristic that can be used to identify and describe matter
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Proton
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a particle with a positive charge found in the nucleus of an atom
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