Dark matter
dark matter
Variables.
It is called quantifying your goals.
Not necessarily.
Any two dimentional geometric figure has a measurable length. This measurement is called circumference. This is also called a plane figure. Examples of plane figures with measurable lengths are: triangle, square, circle, and rectangle.
this is false... a parameter is a measure of a mean or mode, a measurable characteristic of a sample is called a statistic.
That is called a convection current. It occurs when warmer, less dense fluid rises and displaces cooler, denser fluid, creating a circular flow pattern. This phenomenon is commonly observed in the Earth's atmosphere and oceans, as well as in other natural systems.
apparent magnatude
Traits
It is called the magnitude scale. It is a log scale.
A line segment is the measurable part of a line that consists of two points called endpoints.
If it could be directly observed then it would not be called dark matter!