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MSA Review G-L

MSA Review vocabulary G-L

Galaxy: A large collection of stars, gas, and dust held together by mutual gravitation.
Gas: The state in which a substance has no definite shape or volume.
Geologic: Of or relating to Earth or Earth processes.
Glacier: A large mass of snow and ice moving along Earth's surface.
Gravitational: The mutual force of attraction between particles of matter. The magnitude depends on the masses of the particle and the distance between them.
Gravity: The force of gravitational attraction on or near the surface of a celestial body.
Greenhouse gases: Gases that are in the atmosphere that trap heat energy so that it can not escape to space.
Groundwater: Water that is in the porous parts of Earth's crust.
Habitat: The local environment in which a specified organism, population, or species lives, characterized by physical and chemical features, and the presence of certain other species. (Compare ecosystem, biome, environment).
Hardness: Property of a mineral's resistance to being scratched.
Heat Energy: The energy of a material due to the random motion of its particles. Also called thermal energy. The word "heat" is used when energy is transferred from one substance to another.
Host: An organism that supports a parasite either in or on its own body and to its own detriment.
Hurricane: A large, powerful cyclonic storm that forms over a tropical ocean.
Hydrosphere: Any part of the Earth or its atmosphere in which water or water vapor is found.
Hypotheses: Plural of hypothesis. A hypothesis a prediction that can be tested and is based on an observation, experience, or a scientific reason The statement includes the expected cause and effect in a given circumstance or situation.
Igneous rock: Rock formed through the process of magma or lava cooling and hardening.
Image: The optical counterpart of an object formed by a mirror or a lens.
Imprint: A fossil that is an organism's impression which was formed in mud that later hardened into rock.
Independent variable: The factor/value altered by the experimenter during the scientific investigation. The changes made affect the value of the dependent variable. This quantity is plotted along the x-axis of a graph.
Index fossil: A fossil of an organism that lived a relatively short time on Earth, used to determine the relative age of rock layers.
Indicator: A substance that changes color when it comes in contact with an acid or a base.
Inertia: The reluctance of any object to change its state of motion. Mass is the measure of inertia.
Inherit: To receive a characteristic (genes) from an ancestor.
Innate: A trait that is inborn- genetically inherited.
Insulator: (1) A material that is a poor conductor of heat energy.(2) A material that is a poor conductor of electricity.
Interdependence: The relationships between or among organisms necessary for their survival.
Investigation: To observe or study by using a systematic inquiry approach.
Kinetic energy: Energy of motion.
Latitude: A position relative to the distance North or South from the Earth's equator, measured in degrees.
Law of Conservation of Energy: Energy cannot be created or destroyed- only changed from one form to another.
Law of Conservation of Mass: Mass can be neither created nor destroyed during a chemical reaction- only changed from one form to another.
Law of Electrostatics: Law that states like charges repel; unlike charges attract.
Law of Superposition: Law that states in undisturbed sedimentary rock layers, the younger layer is closer to Earth's surface and the older layer is below this.
Light: Electromagnetic radiation or electromagnetic waves which are visible to the human eye.
Liquid: The state in which a substance flows and takes up the shape of its container.
Litmus paper: An indicator which shows whether a solution is acidic or basic (acids turn blue litmus paper red; bases turn red litmus paper blue).
Longitudinal wave: A wave in which the vibration is moving in the same direction as that in which the wave is traveling.
Luster: Ability to reflect light.
Created by: wknopf