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OGT Science JHS j-z
OGT Science terms 80 cards j-z all strands JHS ks
| Question | Answer |
|---|---|
| Kinetic energy | The energy of movement |
| Lipid | Refers to a group of fats that cannot be dissolved in water |
| Lithosphere | The section of Earth that is composed of rock Living systemA group of organisms and their environment |
| Magnet | A type of substance containing iron which also attracts iron (or steel) Malleable |
| Mass | How much matter there is in an object |
| Matter | Something that has mass and occupies space |
| Meiosis | The process of cell division which produces four sex cells (gametes) from one cell |
| Mendel | Gregor Mendel, the scientist who experimented with pea plants and discovered how genetic factors were passed down from parents to offspring |
| Metal | A chemical element from the left-hand side of the periodic table that is malleable, ductile and conducts electricity |
| Metalloid | A chemical element that has characteristics of both metals and nonmetals Metamorphic |
| Microwave | A type of electromagnetic radiation that has low energy and is used primarily for communication (cell phones) |
| Mitochondria | An organelle in all eukaryotic cells which is responsible for energy production |
| Mitosis | The process of cell division which produces two body cells from one cell |
| Molecule | The smallest unit of a substance that is the combination of one or more atoms |
| Mutation | A change in the DNA of an organism; substitution, deletion, insertion Mutualism |
| Natural selection | The process in which some organisms live and reproduce and others die before reproducing |
| Newton | Sir Isaac Newton, a scientist who made hundreds of contributions to science like the law of gravity and his three major laws of physics; a Newton is a measure of force |
| Newton's 1st Law | An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force |
| Newton's 2nd Law | The net force on an object is equal to the acceleration on that object times the mass of the object |
| Newton's 3rd Law | Every reaction has an equal and opposite reaction |
| Nonmetal | A chemical element from the right side of the periodic table that is brittle and does not conduct electricity well |
| Nuclear decay | This happens when the nucleus of an atom breaks apart; usually, neutrons and protons leave the nucleus |
| Nuclear energy | Energy that is produced by fission or fusion reactions |
| Nuclear reaction | A reaction that happens in the nucleus of an atom; fission, fusion |
| Nucleic acid | In the nucleus of a cell, there are two major types of nucleic acids: DNA and RNA |
| Nucleus | 3In biology, this refers to the middle of a cell; in physical science, this refers to the center of an atom |
| Organic | moleculeA molecule that contains carbon atoms bonded together |
| Organism | A living thing that can live and reproduce independently |
| Ozone | A form of oxygen that, in the atmosphere, protects living things from ultraviolet rays |
| Parasitism | A relationship in which one organism lives in or on another organism and benefits from that relationship while the host organism is harmed by it |
| Peer review | A method of selecting essays to be published where a group of peers review and make comments about the submitted essays |
| Periodic table | An arrangement of chemical elements based on their atomic numbers and similarity of properties |
| pH scale | Measures the strength of acids and bases; an acid has a number below 7, a base has a number above 7 and neutral materials have a pH of 7 (like water) |
| Phenotype | The physical expression (what can be seen) of a genetic characteristic; brown eyes, black hair |
| Photosynthesis | The process that happens in plants and some other organisms which takes the sun's energy and turns it into usable energy; 6CO2 + 6H2O + Light è C6H12O6 (glucose) + 6O2 |
| Physical change | A change in a substance that results in a different form of the substance and can be undone |
| Physical property | A characteristic of a substance that can be observed; color, taste, texture, density |
| Physical science | Any of the sciences, such as physics, chemistry, astronomy, and geology, that discusses the nature and properties of energy and nonliving matter |
| Plastic | A material that can be molded and formed into objects and films |
| Plate tectonics | The theory that the earth's surface is divided into a few large, thick plates that are constantly moving |
| Potential energy | Stored energy; energy that is released and then becomes kinetic energy Predation |
| Prokaryote | A type of living thing that is single-celled and has no true nucleus |
| Protein synthesis | The creation of proteins in the cell from DNA |
| Protein | A sequence of amino acids |
| Proton | A positively-charged particle in the nucleus of an atom |
| Pure substance | eA substance that has an identical chemical composition in every part |
| Radiation | Energy that is transmitted in the form of rays or waves or particles; when talking about heat, this is when heat spreads out from a central source |
| Radio wave | A type of electromagnetic radiation that has very low energy and a very long wavelength (can be 10 – 20 feet long); used for cell phones and radios of all kinds |
| Radioactive substance | A type of substance that releases neutrons and protons from its nucleus |
| Radiometric dating | Determining the age of a rock or fossil based on the amount of one isotope compared with another isotope; ex: the amount of carbon-14 versus the amount of carbon-12 can determine how old something is because carbon-14 breaks down to carbon-12 over time |
| Recessive | A genetic characteristic that is only expressed by the organism if there is no dominant characteristic present |
| Recycle | To break down a material so that it can be reused instead of throwing it away Reproduction |
| Sea-floor spreading | In geology, when oceanic plates move apart, the middle fills in with magma which cools and forms new sea floor |
| Semiconductor | A type of material that allows electricity to flow with average resistance |
| Sex-linked trait | A genetic characteristic that is present only on the X (or in some cases, the Y) chromosome and so behaves differently in males and females Sexual |
| Solid | One of the basic states of matter which has a definite shape and volume |
| Species | A very specific classification of organisms; all members of a species can mate together |
| Speed | The amount of distance an object travels divided by the amount of time it takes; He traveled 30 mph |
| Stem cell | A type of cell that can turn into any other type of cell |
| Superconductor | A type of material that allows electricity to flow with no resistance |
| Sustainable agriculture | Agriculture that is done so the land is used well and can continue on forever |
| Symbiosis | A relationship between two or more organisms |
| Synthesis | The combination of two or more things or concepts TechnologyThe application of science to solve a particular problem |
| Temperature | The measurement of the average thermal energy of a system |
| Theory | A well proven explanation of some part of the natural world |
| Thermal energy | Heat |
| Total mass | The combination of all of the masses of everything that is being considered Ultraviolet |
| Unbalanced force | A force that is not balanced out by an opposite force; She was pushing against the wall, but when the wall fell it became an unbalanced force! |
| Unstable nuclei | More than one nucleus (nuclei) that break down very quickly to smaller nuclei |
| Variation | Something that has changed; in biology, this refers to the genetic difference between individuals |
| Velocity | The distance that an object travels over a certain amount of time and in a certain direction; He traveled at 30 mph south |
| Virus | A small particle that contains DNA or RNA and is able to reproduce only inside of a living cell |
| visible ligh | A form of electromagnetic radiation that is visible to the human eye (other organisms are capable of seeing some infrared and ultraviolet radiation) |
| Volume | The amount of space an object takes up |
| Wave | A movement up and down or back and forth |
| Wavelength | Refers to the length of a single wave (back and forth); can be calculated from the crest of one wave to the crest of the next |
| Weight | The combination of the mass and the force of gravity on an object |
| X-rays | A form of electromagnetic radiation that has low energy and is used in medical equipment |
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