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Chapter 2 Vocab Quiz

Name: _______________________________

Date: ___________________
Across
A mathematical technique that allows one to use units to solve problems involving measurements.
A description of how close a measurement is to the true value of the quantity measured.
A ratio that is derived from the equality of two different units and that can be used to convert from one unit to the other.
The relationship between two variables whose product is constant.
An explanation that is based on prior scientific research or observations and that can be tested.
A qualitative comparison of the average experimental value to the correct or accepted value; it is calculated by subtracting the accepted value form the experimental value, dividing the difference by the accepted value, and then multiplying by 100
A method of expressing a quantity as a number multiplied by 10 to the appropriate power.
A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe.
Something that has magnitude, size, or amount.
A set of particles or interacting components considered to be a distinct physical entity for the purpose of study.
A pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept.
Down
The ratio of the mass of a substance tot he volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
A measure of the size of a body or region in three-dimensional space.
The exactness of a measurement.
The relationship between two variables whose ratio is a constant value.
A unit of measure that is a combination of other measurements.
A prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement.
A series of steps followed to solve problems, including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
An explanation for some phenomenon that is based on observation, experimentation, and reasoning.