Science Quiz / 'U' in Natural Sciences

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A value that is greater than or equal to all other values in the set
Solution in which more solute can be dissolved at a given temperature
A circle with a radius of 1
Principle that more accuracy for momentum of a particle means less accuracy for position
Sound pressure wave with frequency above the upper limit of the human hearing range
Combination of all the elements of two or more sets into one set
Dense silvery-white radioactive metal used as a fuel in nuclear reactors
Uncontrolled spread of urban development into neighboring regions
Constellation containing the Big Dipper
Process in which deep, cold water rises toward the surface
Mountain range in western Russia forming the boundary between Europe and Asia
Area of total darkness in the shadow cast by the Moon or other body during an eclipse
A game in which a certain player can always win when he plays properly
Sore on the skin or a mucous membrane, accompanied by disintegration of tissue
Main nitrogenous breakdown product of protein metabolism, excreted in urine
A variable whose value is to be discovered by solving an equation
All of spacetime and everything that exists therein regarded as a whole
Population shift from rural to urban areas
Structure that connects the placenta and the embryo in placental mammals
Radiation with a wavelength shorter than visible light but longer than X-rays
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