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26 Cards in this Set
- Front
- Back
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Atmosphere
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the mixture of gases that surrounds an astronomical object such as the Earth
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Conservation
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preservation, management, and care of natural and cultural resources
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energy
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the ability or power to work or make an effort
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extinct
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having no members of the species or family in existence, as is the case with many organisms known only from fossils
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force
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the power, strength, or energy that somebody or something possesses
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Geographical features
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Distinctive aspects of land
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Life cycles
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the series of changes of form and activity that a living organism undergoes from its beginning through its development to maturity and death
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Magnetic attraction
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attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
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matter
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substance: that which has mass and occupies space
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Moon phases
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The moon as it appears at a particular time in its cycle
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Natural resources
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A material source of wealth, such as timber, fresh water, or a mineral deposit, that occurs in a natural state and has economic.value
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observe
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detect: discover or determine the existence, presence, or fact of;
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Offspring
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the immediate descendants of a person or animal
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orbit
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the (usually elliptical) path described by one celestial body in its revolution about another
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Organism
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a living thing that has (or can develop) the ability to act or function independently
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photosynthesis
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process of using energy in sunlight to convert water and carbon dioxide into carbohydrates and oxygen.
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Physical change
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a change that affects the size, shape or color of a substance but does not affect its composition
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Physical properties
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Any property of matter that can be observed by your senses.
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Pollution
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undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
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predator
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an animal that lives by killing and eating other animals
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prey
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An animal hunted or caught for food; quarry. One that is defenseless, especially in the face of attack; a victim.
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Rotation
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The act or process of turning around a center or an axis:
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Scientific method
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principles and procedures for the systematic pursuit of knowledge involving the recognition and formulation of a problem, the collection of data through observation and experiment, and the formulation and testing of hypotheses
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Solar system
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The Sun and the collection of celestial bodies that orbit it.
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Water cycle
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Transition and movement of water involving evaporation, transpiration, condensation, precipitation, percolation, runoff, and storage.
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weathering
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Any of the chemical or mechanical processes by which rocks exposed to the weather undergo changes in character and break down.
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