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36 Cards in this Set
- Front
- Back
enzyme that breaks down carbohydrates into sugar molecules |
carbohydrase |
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carbohydrate |
nutrient that provides energy |
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shows stores of carbon and how it enters and leaves these stores |
carbon cycle |
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a material made from thin tubes of carbon |
carbon fibre |
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a place when carbon and its compounds may remain for a long time. include atmosphere, oceans, sedimentary rocks, fossil fuels, soil and living organisms |
carbon store |
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catalyst |
speeds up a reaction without being used up |
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cell |
a chemical store of energy which provides the push that moves charge around a circuit |
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the 'gluing together' of sediments by different chemicals to make sedimentary rocks |
cementation |
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center of gravity |
the point in and object where the force of gravity seems to act |
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center of mass |
the point in an object where the mass of an object seems to act |
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a compound such as a metal silicate or oxide that is hard, strong and has a high melting point |
ceramic |
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chemical property |
how a substance behaves in chemical reactions |
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energy stored in food and fuels |
chemical store |
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the breaking up or wearing down of rocks by the action of chemicals such as those in rain water |
chemical weathering |
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chemosynthesis |
reaction performed by bacteria using energy transferred from chemical reactions to produce glucose |
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chlorophyll |
green pigment that absorbs light for use in photosynethesis |
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an image obtained from chromatography |
chromatogram |
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a technique to separate mixtures of liquids that are soluble in the same solvent |
chromatography |
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chromosome |
long strand of DNA which may contain many genes |
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climate change |
a long term change in weather patterns |
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plants and animals living in the same habitat at the same time |
co-exist |
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a burning reaction in which a substance reacts quickly with oxygen and gives out light and heats the surroundings |
combustion |
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the collection of the different types of organism present in an ecosystem |
community |
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the process of squashing sediments together to make new rocks by the weight of the layers above |
compaction |
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competition |
competing with other organisms for resources |
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a mixture of materials with properties that a combination or those of the materials in it |
composite |
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compressed |
squashed into a smaller space |
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the way in which energy is transferred through solids and to a much lesser extent in liquids and gases |
conduction |
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a material that conducts charge or energy well such as metal or graphite |
conductor |
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consumer |
organisms that eat other organisms as food |
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characteristic that can take any value within a range of values |
continuous variation |
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the transfer of energy by the movement of gases or liquids |
convection |
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convection current |
the movement of heated liquids or gases |
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a rod or a magnetic material placed inside a coil to make the magnetic field of an electromagnet stronger |
core |
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crust |
the rocky outer layer of the Earth |
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current |
the flow of electrical charge (electrons) around a complete circuit per second |