What term is used to describe a representation of a thing or system and can be used as a way to test hypothesis?

How is the surface tension of water related to the pleural serous membranes? What is VESDA system? What does scientists use volcanoes and earthquake activity to establish? Is leather man-made or is it natural? Which scientist theorized that light energy can either be released or absorbed in packets called quanta? What is secreted by the kidney to stimulate red blood cell production? Explain why an element's oxidation number is related to the group on the periodic tale to which it belongs? What T is a trait for tallness in pea plants. The trait for shortness is t. In a case of simple dominance what is the height of a plant with the genotype Tt? Can you hang a coat rack above your circuit breaker box? What kind of trajectory was used by Galileo spacecraft? How is NaCI dissolved in water an example of like dissolving in like? What is the best nature for a Pokemon? Is it true that the salinity of an ocean will increase when a freshwater source flows into it? What is a krusea lime? When fossil fuels are burned carbon dioxide and water are produced what elements must be contained in fossils fuels? What is the surface temperature of Phobos? What is the determining factor for the transcription of structural genes of the trp operon? What is the role of plug key in the circuit? A person weighs less at the equator than at the poles The main reason for this has to do with? Is completely digesting a sándwich a physical change?

What term is used to describe a representation of a thing or system and can be used as a way to test hypothesis?